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AD976BRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD976BRZ

AD976BRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD976BRZ is a 16-bit, single-channel successive-approximation analog-to-digital converter with a 100 kSPS sampling rate, operated from a single 5 V supply and housed in a 28-pin SOIC package. Its principal operating characteristics are 16-bit resolution, 100 kSPS throughput, a 4.75 V to 5.25 V analog supply range, and a 100 mW maximum power dissipation. An ADC is a data-acquisition interface that converts a continuously varying analog voltage into a numeric value for processing, storage, or transmission. The AD976 belongs to the successive-approximation ADC hierarchy within mixed-signal semiconductors. It uses a switched-capacitor internal architecture, an internal 2.5 V reference, and a high-speed parallel digital interface to provide deterministic conversion results in instrumentation and signal-processing systems. Key features include 16-bit resolution, a 100 kSPS throughput rate, single-ended analog input, a 5 V analog supply, and parallel data output. The internal reference reduces the number of external precision components required for basic converter operation. The manufacturer datasheet also describes external offset and gain calibration using 200 ohm and 33.2 kilohm resistors, allowing system-level calibration when operating from a single supply. The AD976 uses a successive-approximation, switched-capper architecture implemented with Analog Devices proprietary BiCMOS technology. The BiCMOS process combines high-performance bipolar devices with CMOS transistors, supporting the internal reference, sampling network, and parallel interface. The AD976A family shares this architecture but offers a 200 kSPS throughput rate, so it is not a parameter-equivalent drop-in choice for a design specifically requiring the 100 kSPS AD976. Typical uses include industrial measurement, instrumentation, signal acquisition, data logging, and embedded control systems that accept single-ended analog inputs. It is especially relevant where a 16-bit conversion result, parallel data bus, and moderate sampling rate are more useful than the maximum throughput of a high-speed flash or pipeline converter. Designers should use a suitable acquisition, reference, and decoupling network around the converter and account for analog input settling time before sampling. Because the AD976BRZ uses a 28-pin SOIC package, its footprint is relatively large compared with modern fine-pitch mixed-signal packages. The verified source set does not expose the complete pin names, so this page does not reproduce an unverified pin assignment. This page combines verified manufacturer specifications, distributor availability, application guidance, and procurement information. It also distinguishes the 100 kSPS AD976BRZ from the faster AD976A, preventing a speed-related substitution from being presented as a true drop-in replacement.

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AD976CN - 16-Bit 100 kSPS BiCMOS ADC | Analog Devices
AD976CN

AD976CN - 16-Bit 100 kSPS BiCMOS ADC | Analog Devices

The Analog Devices AD976CN is a 16-bit, 100 kSPS successive-approximation BiCMOS analog-to-digital converter operating from a single 5 V supply and housed in a 28-lead ceramic DIP package. The converter accepts one single-ended input and uses a high-speed parallel interface for direct digital data transfer. Its family supports selectable external or internal 2.5 V references and includes an on-chip clock. An ADC is an analog-to-digital converter, a data-acquisition IC that transforms a continuously varying voltage into a numeric code for processing, storage, or control. The AD976 belongs to the successive-approximation ADC hierarchy within integrated circuits and data-conversion semiconductors. At 100 kSPS and 16-bit resolution, it balances conversion speed with precision while preserving a straightforward parallel-output architecture. The AD976CN's headline parameters are its 16-bit resolution, 100 kSPS conversion throughput, and single 5 V supply operation. According to the Analog Devices AD976 product page, the closely related AD976A reaches 200 kSPS, while the AD976 is specifically identified as the 100 kSPS member. The family also supports external or internal 2.5 V references, a feature that gives designers flexibility in establishing full-scale conversion range. The BiCMOS implementation combines bipolar and CMOS process characteristics to support precision sampling, comparison, and digital output functions. Maximum power dissipation is listed as 100 mW, while typical power-supply current is specified at 14 mA under stated conditions. The converter uses a parallel data interface, which can simplify connection to older digital buses and dedicated data-acquisition controllers when timing and bus-width constraints are managed correctly. Typical uses include industrial process monitoring, instrumentation, digital measurement equipment, waveform acquisition, and embedded control systems. Its single-ended input architecture is useful when the source can be referenced and scaled to the selected input range. The internal or external 2.5 V reference choice also makes the ADC suitable for laboratory and industrial systems where traceability or system-level reference partitioning affects measurement accuracy. When designing around the AD976CN, preserve the manufacturer's recommended analog and digital grounding and decoupling arrangements, and account for acquisition, conversion, and output-update timing at the system level. The 28-lead DIP package is less common in new high-density assemblies, so designers should verify connector availability and assembly process requirements before committing the footprint. Because the verified data identifies AD976CN as obsolete or EOL, lifecycle planning and sourcing risk are significant selection considerations. This page consolidates the verified manufacturer specifications, lifecycle information, sourcing context, and design implications for AD976CN. It also distinguishes verified facts from parameters that remain unavailable in the supplied data, helping engineers evaluate legacy replacements without assuming unverified electrical or pin-level compatibility.

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AD976CNZ - 16-Bit 100kSPS BiCMOS ADC | Analog Devices
AD976CNZ

AD976CNZ - 16-Bit 100kSPS BiCMOS ADC | Analog Devices

The Analog Devices AD976CNZ is a 16-bit, 100 kSPS successive-approximation analog-to-digital converter in a 28-pin PDIP (N-28) through-hole package. It operates from a single 5 V supply (4.75 V to 5.25 V), accepts input ranges of ±10 V, 0-10 V, and 0-4 V, and delivers 100 mW typical power dissipation, suiting it to industrial instrumentation, data acquisition, and process control front ends. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts a continuous-time, continuous-amplitude analog input into a discrete-time, discrete-amplitude digital codeword. Within the broader signal-chain taxonomy, an ADC belongs to data converters, which sit alongside DACs (digital-to-analog converters) in mixed-signal ICs. Successive-approximation-register (SAR) ADCs use a binary-search algorithm and an internal precision DAC to converge on the input voltage in N clock cycles, achieving high resolution at moderate sampling rates with very low latency and zero pipeline delay. Key features include 16-bit resolution, 100 kSPS throughput, a parallel data interface, single 5 V supply operation, and an internal 2.5 V reference. The device is specified over the -40 °C to +85 °C industrial temperature range, uses a switched-capacitor input architecture, and dissipates only 100 mW maximum. The 28-pin PDIP (N-28) package simplifies prototyping and breadboarding in laboratory and factory-floor applications where socketed through-hole parts are preferred. Architecture-wise, the AD976 employs BiCMOS process technology, combining bipolar precision analog blocks with CMOS logic for the SAR engine and output latches. The BiCMOS integration reduces analog-domain noise while keeping digital control current low, supporting the part's 100 mW dissipation budget at full throughput. An external or internal reference option allows designers to trade absolute accuracy against system cost. Typical applications include industrial process control, multichannel data-acquisition systems, portable instrumentation, and PC/embedded signal-conditioning front ends. The single-5 V supply and parallel interface make it easy to interface to legacy microcontrollers, DSPs, and FPGAs without level translation. When designing with the AD976CNZ, observe the input-common-mode and acquisition-time requirements; an external input buffer amplifier is normally required to drive the switched-capacitor input. Use a low-impedance ground plane and decouple AVCC and DVCC separately to preserve the converter's 16-bit linearity. This page synthesizes distributor pricing, drop-in same-family and cross-brand equivalents, and practical design notes not found in the bare manufacturer datasheet, helping engineers source and qualify the AD976CNZ quickly.

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AD976CR - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD976CR

AD976CR - 16-Bit 100 kSPS SAR ADC | Analog Devices

Analog Devices AD976CR is a high-speed, low-power, 16-bit successive-approximation analog-to-digital converter with a 100 kSPS throughput rate, a single 5 V supply, and a 28-lead SOIC package. The converter includes an internal 2.5 V reference, an on-chip clock, a high-speed parallel interface, and the choice of an external or internal reference. A successive-approximation ADC, or SAR ADC, is a sampling data-converter type that successively compares the sampled input voltage with a controlled reference and produces one digital bit per comparison cycle. Within the broader data-conversion hierarchy, the AD976CR belongs to the ADC and data-acquisition IC category, where its combination of 16-bit resolution, 100 kSPS throughput, and parallel output provides a practical balance between conversion speed, accuracy, interface simplicity, and power consumption. Key features include 16-bit resolution, 100 kSPS operation for the AD976 version, single 5 V supply operation, an internal 2.5 V reference, a high-speed parallel interface, and low-power operation. The parallel interface exposes the converted code directly on digital output pins, making it suitable for systems in which the receiving logic can capture data at the converter's supported rate. The AD976 family also permits use of an external reference when greater reference control is required. The AD976CR uses a switched-capacitor SAR conversion architecture. Its on-chip clock supports the digital conversion sequence, while the parallel output avoids requiring a serial link in the immediate sampling path. This architecture is appropriate for industrial control, instrumentation, communications, and embedded measurement systems that require deterministic sampling and moderate throughput without the complexity of a high-speed pipeline or flash ADC. Typical uses include industrial process monitoring, laboratory data acquisition, communications equipment, digital instrumentation, and embedded control systems. For audio, communications, or precision measurement, engineers should review the manufacturer's complete data sheet for input bandwidth, settling behavior, reference requirements, and source-impedance limitations before fixing the sampling architecture. When designing around the AD976CR, allow adequate settling time for the source network and external reference, preserve the required analog and digital return paths, and use a low-noise 5 V supply. The 28-lead SOIC footprint supports conventional surface-mount assembly, but high-speed layout still demands short traces and careful separation between analog input, reference, and digital output nets. This product record combines the verified manufacturer overview, distributor identification, pricing references, and practical engineering guidance in one searchable reference. It also distinguishes confirmed AD976CR characteristics from unverified parameters so engineers can identify what must be checked against the official datasheet before design release.

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AD976CRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD976CRZ

AD976CRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD976CRZ is a 16-bit, 100 kSPS successive-approximation analog-to-digital converter with one analog input, a high-speed parallel output interface, and a 28-pin SOIC package. It operates from a single 5 V supply and uses an internal 2.5 V reference. The converter combines switched-capacitor sampling and successive-approximation conversion to provide a direct digital representation of an analog input while keeping system power requirements comparatively low. An ADC is an interface IC that converts a continuously varying analog voltage into a digital code. Within the broader semiconductor hierarchy, the AD976 is a data-conversion IC within the ADC/DAC category. Its 16-bit resolution provides 65,536 possible digital codes, while the 100 kSPS throughput supports applications that require accurate conversion without the conversion time associated with lower-rate general-purpose data converters. Key features of the AD976CRZ include 16-bit resolution, a 100 kSPS maximum throughput rate, single-supply 5 V operation, an internal 2.5 V reference, and a parallel output interface. The architecture supports acquisition systems, communications equipment, instrumentation, and industrial control applications where the sampled analog signal must be presented to downstream logic or a digital processor. Internally, the AD976 uses a switched-capacitor successive-approximation ADC. The sampling network captures the analog input before the conversion process compares successive bit decisions. The manufacturer documentation identifies an internal 2.5 V reference and describes external 200 ohm and 33.2 kilohm resistors that provide offset and gain compensation for the single-supply configuration. These compensation components are functional parts of accurate system implementation rather than optional signal-conditioning accessories. Typical uses include communications receivers, data-acquisition modules, industrial measurement systems, digital audio and control equipment, and embedded processing platforms. The parallel interface can reduce output multiplexing complexity compared with serial converters when the receiving system can provide enough digital input connections and acquire the converted code at the supported rate. Circuit implementation requires careful attention to analog signal conditioning, reference behavior, digital timing, and the ADC supply. Input and output transitions should be controlled so that switching activity does not degrade conversion accuracy, while the manufacturer's compensation values and recommended layouts should be followed exactly. The AD976CRZ is also offered in related AD976 and AD976A families, but the AD976A doubles the stated throughput to 200 kSPS and should not be treated as an automatic drop-in replacement. This product page combines verified manufacturer and distributor data, package information, pricing context, application guidance, and engineering selection notes. It also distinguishes the AD976's 100 kSPS rating from the faster AD976A, helping engineers identify whether a related converter changes system timing or requires additional validation.

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AD977AAR - 16-Bit 200 kSPS Serial ADC | Analog Devices
AD977AAR

AD977AAR - 16-Bit 200 kSPS Serial ADC | Analog Devices

The Analog Devices AD977AAR is a 16-bit successive-approximation analog-to-digital converter with a 200 kSPS throughput rate, single 5 V supply operation, and a 20-lead SOIC package. It is designed for high-speed serial data acquisition where low power, compact implementation, and flexible input ranges are important. An ADC is a semiconductor that converts an analog voltage into a digital number for processing, measurement, or transmission. The AD977AAR belongs to the ADC and data-converter hierarchy, where its 16-bit resolution provides 65,536 nominal code levels. Its serial interface reduces the number of signal connections compared with a parallel converter and is appropriate for systems that transfer converted samples to a controller, DSP, FPGA, or communications equipment. The AD977AAR provides selectable unipolar and bipolar input ranges, including 0 to 5 V and 0 to 4 V unipolar ranges and 5 V and 3.3 V bipolar ranges. It operates from a single 5 V supply and includes a power-down mode. The manufacturer identifies the AD977AAR as the 200 kSPS member of the AD977 and AD977A family; the AD977 has a 100 kSPS throughput rate. Its low-power design is intended for compact instrumentation and control systems where converter power dissipation must remain controlled. The converter uses a successive-approximation architecture with an internal sample-and-hold function. External reference and interface circuitry determine the complete analog signal-chain implementation, while the serial output transfers each conversion result to the receiving digital system. The 20-SOIC package provides a conventional surface-mount form factor suitable for industrial and embedded equipment. Typical applications include process-control instrumentation, data-acquisition systems, industrial measurement equipment, communications receivers, medical monitoring equipment, and embedded control systems. The AD977AAR is especially appropriate when the design requires 16-bit conversion resolution, a 200 kSPS sampling capability, serial output, and operation from a single 5 V supply. When designing around the AD977AAR, verify the selected input range against the signal source, reference voltage, serial clock arrangement, digital interface levels, and acquisition timing. Confirm that the external front-end can drive the converter input without exceeding the datasheet input limits. Use the manufacturer’s pin-description table and timing diagrams when assigning PCB traces and validating conversion latency. This page organizes the manufacturer specifications, package information, application guidance, pricing workflow, and replacement considerations for engineers evaluating the AD977AAR in a new or existing data-acquisition design.

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AD977ABN - 16-Bit 100 kSPS Serial ADC | Analog Devices
AD977ABN

AD977ABN - 16-Bit 100 kSPS Serial ADC | Analog Devices

The Analog Devices AD977ABN is a 16-bit successive-approximation analog-to-digital converter with a 100 kSPS throughput rate, operated from a single 5 V supply and housed in a 20-pin PDIP package. The converter uses a serial interface for data transfer, making it suitable for compact instrumentation and measurement systems. Its input architecture supports unipolar and bipolar signal ranges, while the internal switched-capacitor ADC provides a direct conversion function for precision signal acquisition. An ADC is an analog-to-digital converter, a mixed-signal semiconductor that transforms continuous voltage signals into digital codes. ADCs are used within measurement, control, communication, and instrumentation systems to place analog sensor or conditioning outputs into a form that can be processed by a microcontroller, DSP, or other digital logic. The AD977ABN belongs to the high-speed ADC category and combines a 16-bit resolution with a 100 kSPS sampling rate. The AD977 family includes the AD977 and AD977A versions. The AD977 provides a 100 kSPS throughput rate, while the AD977A provides a 200 kSPS throughput rate. Both families operate from a single 5 V supply and use a serial I/O architecture. The AD977ABN also supports power-down operation, reducing power dissipation to 50 W during the stated power-down condition described by the manufacturer documentation. The converter's switched-capacitor architecture supports external reference and input-range configuration. The available family information identifies unipolar ranges of 0 to 5 V and 0 to 4 V, along with bipolar ranges of plus or minus 5 V and plus or minus 3.3 V. The input range selection therefore determines the analog signal span that the converter maps to its 16-bit output codes. Typical uses include industrial process measurement, instrumentation, data acquisition, communications, and embedded control systems. A serial interface reduces the number of signal connections required on the PCB, while the 16-bit resolution is useful when the captured signal requires more dynamic range than a lower-resolution converter. The AD977ABN can also serve as a functional building block in measurement systems requiring programmable analog input ranges and controlled shutdown behavior. When designing a board around the AD977ABN, verify the exact input range, reference voltage, digital interface timing, and power-supply sequencing against the manufacturer datasheet. Keep analog input routing short and away from high-current digital paths, place bypass capacitors close to the supply pins, and use a clean reference source when high conversion repeatability is required. Because this is a 100 kSPS SAR converter, the circuit must also account for acquisition time, source impedance, and the required sampling interval. This product page combines the manufacturer family specifications, exact AD977ABN conversion and package details, pricing structure, and practical engineering guidance. The comparison and selection material highlights how throughput, input range, package format, and interface requirements affect replacement decisions for 16-bit serial ADCs.

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AD977ABR - 16-Bit 200kSPS Serial SAR ADC | 20-SOIC | ADI
AD977ABR

AD977ABR - 16-Bit 200kSPS Serial SAR ADC | 20-SOIC | ADI

The Analog Devices AD977ABR is a 16-bit, 200 kSPS successive-approximation (SAR) analog-to-digital converter with a serial I/O interface, packaged in a 20-pin SOIC (R-20) wide-body surface-mount package. It operates from a single +5 V supply, dissipating a maximum of 100 mW, and supports input ranges of 0 V to 5 V (unipolar), 0 V to 4 V (unipolar), ±5 V (bipolar) and ±3.3 V (bipolar) via factory-trimmed or user-configurable scaling resistors. The SAR architecture with internal conversion clock and auto-calibrating capacitive DAC achieves true 16-bit performance with no missing codes over the industrial temperature range. An ADC (analog-to-digital converter) is a data-converter integrated circuit that samples a continuous analog input voltage and produces a corresponding digital code at its output. SAR ADCs use a binary-search successive-approximation register together with an internal DAC to resolve each conversion in N clock cycles for N-bit precision; they are valued for zero pipeline latency, deterministic behavior, low power, and excellent DC linearity. SAR converters occupy a unique position in the data-converter hierarchy between high-speed flash/pipeline ADCs (>10 MSPS) and slow integrating/sigma-delta ADCs (audio, precision DC). The AD977A family is one of the classic low-power industrial SAR ADCs of the 1990s and remains in production for installed-base applications. Key features include an aperture delay of 5 ns, track-and-hold bandwidth of 2 MHz, and a power-down mode that reduces quiescent dissipation to 50 µW for battery-powered designs. The serial interface is compatible with standard SPI/QSPI/MICROWIRE hosts, simplifying connection to microcontrollers and DSPs. Input protection diodes are absent on the analog input pin, so external clamping is required when the input can exceed the supply rails. Typical applications include industrial process control data acquisition, multichannel PLC analog input modules, portable instrumentation, weighing scales, and remote sensor digitizers. The combination of ±5 V true-bipolar input range and serial output makes the part especially well suited to legacy PLCs and 4-20 mA loop digitizers. Designers should observe the datasheet's reference decoupling and analog-input filtering guidelines to realize the rated INL/DNL and signal-to-noise ratio, and should add an external TVS/Schottky clamp at the analog input when transients beyond ±5 V are possible.

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AD977ABRS - 16-Bit 200kSPS Serial I/O ADC | Analog Devices
AD977ABRS

AD977ABRS - 16-Bit 200kSPS Serial I/O ADC | Analog Devices

The Analog Devices AD977ABRS is a 16-bit, 200 kSPS successive approximation register (SAR) analog-to-digital converter with a serial I/O interface, housed in a 28-pin SSOP package. Operating from a single 5 V supply, the AD977A variant delivers 200 kSPS throughput while its companion AD977 delivers 100 kSPS, both with 100 mW maximum power dissipation and a 50 µW power-down mode. An SAR ADC is a precision data converter that performs a binary search against the analog input using an internal capacitive DAC, sample-and-hold, reference, and clock. SAR ADCs occupy the precision-mid-tier in the converter hierarchy (SAR -> ADC -> data converter -> mixed-signal IC -> semiconductor), combining high DC accuracy, low latency, and a compact serial output - ideal for multiplexed data-acquisition systems. Key features of the AD977ABRS include unipolar input ranges of 0V to 5V and 0V to 4V plus bipolar ranges of ±5V and ±3.3V, providing measurement flexibility across industrial sensor signal levels. The device integrates a reference, clock, and sample-and-hold, and provides either an internal clock or an external data-clock-synchronized serial output. Maximum power dissipation is 100 mW active and 50 µW in shutdown mode. The AD977ABRS is fabricated on a BiCMOS process that pairs bipolar input buffers with CMOS logic, achieving low input-referred noise and stable DC linearity at the 200 kSPS conversion rate. The integrated 2.5 V reference and single-supply 5 V operation remove the need for external reference components in many applications. Typical applications include industrial process control, multi-channel data-acquisition systems, instrumentation, weigh scales, and portable battery-powered measurement equipment. The serial interface simplifies isolation barriers, while the small 28-SSOP footprint suits dense multi-channel layouts. When designing with this ADC, ensure the analog input is driven from a low-impedance source and referenced to AGND1 to avoid resistive ground-drop artifacts. Place the 2.5 V reference bypass and the input RC anti-alias filter within 1 mm of the input and reference pins. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the Analog Devices datasheet alone, enabling faster component selection and PCB layout decisions.

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AD977ACR - 16-Bit 200 kSPS SAR ADC | Analog Devices
AD977ACR

AD977ACR - 16-Bit 200 kSPS SAR ADC | Analog Devices

The Analog Devices AD977ACR is a 16-bit, 200 kSPS successive-approximation analog-to-digital converter operating from a single 5 V supply in a 20-pin SOIC package. It combines a switched-capacitor SAR conversion architecture with an internal 2.5 V reference and supports industrial-temperature applications requiring a precise, low-power conversion solution. An ADC is a mixed-signal integrated circuit that converts a continuously varying analog voltage into a numeric code for processing, measurement, or transmission. Within the semiconductor hierarchy, the AD977ACR is a data converter, specifically a SAR ADC and analog-to-digital converter. SAR converters compare the sampled input against an internal reference through a binary-search conversion process, making them well suited to instrumentation and control systems where power consumption and deterministic latency matter more than maximum sampling frequency. The verified device information identifies the AD977 family as a high-speed, low-power 16-bit converter with single 5 V operation. The AD977A member provides a 200 kSPS throughput rate, while the related AD977 reaches 100 kSPS. Other verified characteristics include BiCMOS construction, an internal 2.5 V reference, switched-capacitor conversion, one analog input, and an industrial temperature grade for the AD977ACR ordering code. The 20-lead gull-wing surface-mount package is identified as a rectangular SOP package by distributor listings. Its SAR architecture avoids the continuous internal sequencing demands of pipeline converters, helping limit power use while retaining 16-bit nominal resolution. Because the available web excerpts do not publish complete timing curves, input impedance, common-mode range, or full-scale accuracy tables, those parameters require confirmation in the Analog Devices AD977/AD977A technical documentation before a production design is released. Typical uses include industrial process-control instrumentation, digital measurement systems, data-acquisition modules, sensor interface equipment, and embedded test systems. The single 5 V supply simplifies analog and digital power planning, while the internal 2.5 V reference can reduce the external component count when the application's accuracy and reference-current requirements allow it. The principal design consideration is reference and layout discipline. Keep the analog input trace short, place decoupling capacitors close to the supply pins, and route high-current digital return currents away from the converter input. Confirm the source impedance, acquisition time, common-mode limits, and output-code behavior against the complete manufacturer datasheet rather than relying on marketplace summaries alone.

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AD977AN - 16-Bit 100 kSPS Serial SAR ADC | Analog Devices
AD977AN

AD977AN - 16-Bit 100 kSPS Serial SAR ADC | Analog Devices

The Analog Devices AD977AN is a 16-bit, single-input successive-approximation analog-to-digital converter with a 100 kSPS throughput rate, operated from a single 5 V supply and housed in a 20-pin PDIP package. It includes an internal 2.5 V reference and a high-speed serial interface, combining 16-bit resolution with low power dissipation of no more than 100 mW. An ADC is a data-conversion IC that transforms an analog voltage into a numeric code for processing, storage, or transmission. The AD977AN belongs to the SAR ADC family, a subtype of data converters whose switched-capacitor conversion process provides accurate, direct conversion without the complexity of a pipeline converter. In the electronic-component hierarchy, it is a 16-bit ADC, then an analog-to-digital converter, data converter, and integrated circuit. The principal features include 100 kSPS conversion throughput, one analog input, a serial interface, and factory calibration. According to the Analog Devices manufacturer datasheet, the AD977 supports unipolar input ranges of 0 V to 5 V and 0 V to 4 V, as well as bipolar ranges of plus or minus 5 V and plus or minus 3.3 V. A 5 V analog supply and a separate 2.5 V reference are identified as core operating characteristics. The converter uses a factory-calibrated switched-capacitor SAR architecture. Its internal 2.5 V reference supports repeatable conversion behavior, while the serial output reduces the number of package pins required for transferring 16-bit results. The AD977AN dissipates no more than 100 mW, making it suitable for instrumentation where converter accuracy and power consumption must both be controlled. A power-down mode is also identified in the manufacturer documentation. Typical uses include industrial process measurement, laboratory data acquisition, instrumentation, sensor-interface systems, and embedded measurement equipment where 16-bit resolution is useful but high conversion speed beyond 100 kSPS is unnecessary. The single-ended input architecture and serial interface can also simplify designs that already employ serial data acquisition buses. When laying out a circuit, place the input, reference, and decoupling connections according to the manufacturer application guidance and minimize digital-clock crosstalk into the analog input path. Care is required when operating near the limits of the unipolar or bipolar input ranges because excessive input voltage can exceed the converter's permitted range. Check the complete input common-mode and source-impedance requirements before finalizing the analog front end. This product record combines manufacturer specifications, distributor availability information, parameter-by-parameter family comparisons, and practical design guidance. It also distinguishes the exact AD977AN from related AD977A and suffix variants, helping engineers identify pin-compatible procurement options without confusing throughput, package, or temperature-grade differences.

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AD977ANZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD977ANZ

AD977ANZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

Analog Devices AD977ANZ is a 16-bit successive-approximation analog-to-digital converter with a sampling rate of 100 kSPS, single-ended analog input, serial output, and a 20-pin PDIP package. The converter operates from a single 5 V supply and incorporates a switched-capacitor ADC core with an internal 2.5 V reference. Its combination of moderate throughput, low power consumption, and 16-bit resolution suits precision measurement systems that do not require the 200 kSPS rate of the AD977A family member. An ADC is a data-conversion integrated circuit that transforms a continuously varying analog voltage into a digital value. The AD977 belongs to the SAR ADC hierarchy, where successive-approximation switched-capacitor circuitry compares the sampled input against an internal reference and resolves each conversion through successive bit decisions. SAR ADCs are commonly used within test and measurement equipment, industrial control systems, instrumentation, and embedded data-acquisition platforms. The AD977ANZ provides 16-bit resolution at 100 kSPS from one analog input. Its single 5 V operating supply simplifies system-level power planning, while the internal 2.5 V reference supports the converter core. The serial interface reduces the number of package pins needed for data transfer, and the 20-pin PDIP package is suitable for conventional through-hole PCB assembly and prototype development. Compared with the faster AD977A, the AD977ANZ has a lower maximum throughput of 100 kSPS versus 200 kSPS. This distinction matters when designing multiplexed sensor acquisition, process-control, or digital instrumentation systems: the AD977ANZ can serve lower-rate precision channels, while the AD977A is better aligned with twice-rate acquisition requirements. The AD977 family also supports over-sampling techniques when additional effective resolution is needed, subject to the analog and digital noise limits of the complete measurement chain. Typical uses include industrial process monitoring, laboratory measurement instruments, data-acquisition modules, digital panel meters, and embedded control systems. Engineers should preserve clean analog grounding, provide suitable reference and bypass decoupling, and route the serial data lines away from high-current switching nodes. Input-source impedance and acquisition time must also be checked against the required sampling rate. For PCB layouts, use a continuous ground plane and place input, reference, and supply bypass components close to their associated pins. The 20-pin PDIP format simplifies socket-based prototyping, but production designs should minimize long analog traces and protect the input node from electrostatic discharge and switching-node coupling. This page organizes the AD977ANZ conversion-rate, supply, resolution, packaging, and application characteristics with drop-in family alternatives and practical PCB guidance for faster component selection.

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AD977AR - 16-Bit 100 kSPS Serial ADC | Analog Devices
AD977AR

AD977AR - 16-Bit 100 kSPS Serial ADC | Analog Devices

The Analog Devices AD977AR is a 16-bit, 100 kSPS, single-input successive-approximation analog-to-digital converter operating from one 5 V supply and housed in a 20-pin SOIC package. The AD977 family uses a switched-capacitor ADC architecture with an internal 2.5 V reference and a high-speed serial interface. According to the Analog Devices product page, the AD977A reaches 200 kSPS while the AD977 reaches 100 kSPS. An ADC is an analog-to-digital converter, a semiconductor that samples a continuous analog voltage and produces a corresponding numeric code for digital processing. AD977AR belongs to the successive-approximation ADC family, a type commonly used where moderate sampling rate, low power, compact packaging, and straightforward system integration are more important than very high conversion bandwidth. Its 16-bit resolution supports finely quantized measurements while the single 5 V supply simplifies system power architecture. The verified features include a 16-bit conversion resolution, 100 kSPS throughput for AD977, and 200 kSPS throughput for AD977A. The device is factory calibrated, has unipolar and bipolar input-range options, supports 5 V and 3.3 V bipolar configurations as described in the retrieved datasheet material, and provides a power-down mode. Its switched-capacitor SAR architecture separates acquisition and conversion functions while retaining a compact, low-power implementation. The AD977AR is suitable for industrial measurement, instrumentation, process control, sensor acquisition, data acquisition systems, and embedded control platforms. A system designer should select the input range and reference arrangement required by the analog signal, then validate conversion timing against the 100 kSPS device rating. The serial interface reduces package pin count and board area, but the host processor must support the required clocking and data protocol. The main design consideration is analog signal conditioning. Keep the input within the selected unipolar or bipolar range, account for source impedance and sampling behavior, and provide stable reference and supply decoupling close to the device. For replacement decisions, the exact suffix, package, interface, input range, reference configuration, and timing must be checked rather than relying only on the AD977 family name. This page combines the verified AD977 family specifications with application guidance, pin-level caveats, comparison placeholders, and procurement-oriented information. It is intended to help engineers identify whether the AD977AR matches a 16-bit, 100 kSPS, single 5 V ADC design and to locate the manufacturer datasheet and distributor listings before committing to a board or production release.

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AD977ARZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD977ARZ

AD977ARZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD977ARZ is a 16-bit, single-channel, successive-approximation analog-to-digital converter with a throughput rate of 100 kSPS, operated from a single 5 V supply and packaged in a 20-pin SOIC. The converter combines an internal 2.5 V reference, factory calibration, and a high-speed serial interface in a low-power analog-to-digital converter package. An ADC is an integrated circuit that converts an analog voltage into a digital code for processing, measurement, or control. The AD977 belongs to the successive-approximation, or SAR, ADC family, which successively compares the input voltage with an internally generated reference voltage. SAR ADCs are widely selected for precision measurement because they provide deterministic conversion behavior, compact implementation, and an effective balance of resolution, speed, and power consumption. The AD977ARZ provides 16-bit nominal resolution, one analog input, and a 100 kSPS conversion rate. It operates from a single 5 V supply, while an internal 2.5 V reference supplies the conversion reference. Its factory calibration is designed to minimize gain, offset, and nonlinearity errors, reducing the need for extensive calibration in the end system. Digital information is transferred through the high-speed serial interface rather than a parallel data bus, which keeps the package compact and reduces the number of PCB signal traces. The switched-capacitor SAR architecture supports low-power operation compared with many higher-speed flash and pipeline converters. The manufacturer documentation identifies low power dissipation as a core characteristic, with a 100 mW maximum value reported in the retrieved specification data. Power-down operation is also available for systems that need to reduce consumption when conversions are not continuously required. The usable analog supply range reported by the retrieved data is 4.75 V to 5.25 V. Typical uses include industrial process monitoring, sensor signal acquisition, instrumentation, communications equipment, data acquisition, and embedded control systems where a 16-bit conversion result and 100 kSPS throughput are sufficient. The serial interface is particularly useful when board space is constrained or the converter is connected to a microcontroller, programmable logic device, or dedicated digital controller. When designing around the AD977ARZ, preserve separate analog and digital ground return paths and reference the analog input to the AGND1 pin specified by Analog Devices. Drive the analog input from a low-impedance source, and verify the complete power, ground, decoupling, and serial-interface implementation against the manufacturer datasheet before production release. This page combines the verified manufacturer and distributor specifications, sourced pricing, package information, practical application guidance, and explicit data gaps. It is intended to help engineers evaluate the AD977ARZ for 16-bit, 100 kSPS single-supply acquisition without concealing information that remains unavailable in the retrieved source material.

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AD977BN - 16-Bit 100 kSPS ADC | Analog Devices
AD977BN

AD977BN - 16-Bit 100 kSPS ADC | Analog Devices

The Analog Devices AD977BN is a 16-bit, single-channel, successive-approximation analog-to-digital converter with a 100 kSPS throughput rate, serial interface, and 20-pin PDIP package. It operates from a single 5 V supply and provides selectable unipolar and bipolar input ranges for precision signal acquisition. An ADC converts an analog voltage into a digital code for measurement, control, instrumentation, and signal-processing systems. The AD977 belongs to the successive-approximation ADC, or SAR ADC, family within the broader data-converter and mixed-signal semiconductor hierarchy. Its 16-bit resolution supports fine amplitude quantization, while its 100 kSPS throughput is suited to accurate acquisition of slowly changing or moderate-bandwidth signals. The verified product information identifies a 16-bit SAR architecture, one analog input, serial I/O, and operation from a single 5 V supply. Available input ranges include unipolar 0 V to 5 V and 0 V to 4 V, plus bipolar 0 V to 5 V and 0 V to 3.3 V. The AD977 family also offers an external-reference option, while the manufacturer describes the converter as a low-power, high-speed data-acquisition device. The AD977A is a related family member with a 200 kSPS throughput rate, whereas the AD977 used by AD977BN is specified at 100 kSPS. This distinction matters when selecting a replacement: a faster related device may require different timing, acquisition, and system-level validation even when its resolution and function are similar. Typical applications include industrial process measurement, laboratory data acquisition, instrumentation, transducer interfaces, and embedded control systems. The serial interface can reduce PCB routing requirements compared with a parallel ADC, but the host processor must read the serial data at the converter's supported rate and account for acquisition and conversion timing. For robust designs, provide a stable reference and supply, connect the analog input according to the selected input range, and validate signal-conditioning bandwidth against the 100 kSPS throughput. The 20-pin PDIP package is through-hole and is not a direct substitute for surface-mount implementations without a package and pinout review. This page combines the verified Analog Devices family description, distributor identification, package information, and practical selection guidance. It also distinguishes the AD977BN from the faster AD977A rather than presenting related family variants as interchangeable without qualification.

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AD977BNZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD977BNZ

AD977BNZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD977BNZ is a 16-bit, 100 kSPS, single-input successive-approximation analog-to-digital converter operating from a single 5 V supply in a 20-pin PDIP package. It provides serial SPI-compatible data output, an internal 2.5 V reference, and an industrial operating-temperature range of -40°C to +85°C. An ADC is a data-conversion IC that converts an analog voltage into a digital code for processing by a microcontroller, DSP, or other digital system. The AD977 belongs to the SAR ADC family within the broader analog-to-digital converter and data-converter hierarchy. SAR conversion repeatedly compares the sampled input with an internally generated reference to determine successive bits of the 16-bit result. Key features include 16-bit resolution, a 100 kSPS throughput rate, one analog input channel, a serial SPI interface, and single 5 V operation. Maximum power dissipation is 100 mW, while a dedicated power-down mode helps reduce consumption when conversions are not required. The converter is housed in a 20-pin PDIP package measuring approximately 0.300 inches wide, or 7.62 mm. The AD977 uses a switched-capacitor successive-approximation architecture and includes an internal 2.5 V reference. Its serial interface reduces the number of signal connections compared with a parallel-output ADC, making the device suitable for space-constrained instrumentation where conversion rate requirements are below 100 kSPS. The analog input remains single-ended according to the product specifications. Typical applications include industrial process measurement, sensor signal acquisition, laboratory instrumentation, factory automation, and embedded control systems. These uses benefit from the combination of 16-bit resolution, serial connectivity, and a moderate conversion rate rather than the very high throughput required by waveform capture or communications receivers. When designing around the AD977BNZ, preserve adequate input-headroom margin for the full 4.75 V to 5.25 V supply range and follow the manufacturer's grounding and reference recommendations. Confirm that 100 kSPS meets the application's acquisition rate and allow for acquisition, conversion, and serial-transfer time when calculating end-to-end throughput. This product page combines the AD977BNZ electrical characteristics, package information, replacement analysis, and practical design guidance to help engineers evaluate the converter before integrating it into a new analog measurement system.

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AD977BR - 16-Bit 100 kSPS Serial ADC | Analog Devices
AD977BR

AD977BR - 16-Bit 100 kSPS Serial ADC | Analog Devices

The Analog Devices AD977BR is a 16-bit, 100 kSPS, single-input successive-approximation analog-to-digital converter operating from one 5 V supply in a 20-lead SOIC package. It uses serial I/O, provides unipolar and bipolar input ranges, and includes an internal 2.5 V reference according to the manufacturer product page. The converter combines a 16-bit sampling rate of 100,000 conversions per second with low-power operation and a 100 mW maximum specified power dissipation. An ADC is a data-acquisition semiconductor that converts an analog voltage into a digital code for measurement, control, instrumentation, and signal-processing systems. The AD977 belongs to the successive-approximation ADC family, also called a SAR ADC. Compared with flash and pipeline converters, a SAR ADC generally uses sequential internal comparisons, making this device suitable for moderate-speed precision acquisition where output resolution, serial communication, and low power are more important than very high conversion throughput. The AD977BR provides a 16-bit conversion result at 100 kSPS from a single 5 V supply. Its input architecture supports unipolar ranges of 0 V to 5 V and 0 V to 4 V, plus bipolar ranges of ±5 V and ±3.3 V. The verified sources also identify external-reference and power-down options, internal-reference capability, and industrial-temperature packaging. These features allow the same converter family to address sensor interfaces, process-control measurements, laboratory acquisition, and industrial diagnostic systems. The switched-capper architecture is factory calibrated, as stated in the Analog Devices datasheet description. Sampling and conversion behavior must be coordinated with the serial interface and external analog network. The AD977BR uses serial I/O rather than a parallel data bus, reducing package pin count and PCB routing requirements while requiring compatible firmware or control logic. The AD977A member provides a higher 200 kSPS rate, whereas the AD977BR is the 100 kSPS version. Typical applications include industrial process monitoring, sensor signal acquisition, medical instrumentation, laboratory measurement, communications equipment, and embedded data-acquisition systems. A system designer should verify the exact input range, reference configuration, timing, electrical limits, and pin-level requirements against the manufacturer datasheet before layout or firmware release. The most important design consideration is preserving analog signal integrity while supporting the serial interface. Keep the analog input and reference paths short, use suitable bypass and filtering components, and account for source impedance during acquisition. The verified data does not provide all timing, accuracy, temperature, and reference-load details, so those values should be obtained from the official AD977/AD977A datasheet. This page consolidates the verified manufacturer and distributor information, separates confirmed AD977BR characteristics from unknown parameters, and provides application guidance without treating unverified values as specifications.

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AD977BRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD977BRZ

AD977BRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD977BRZ is a 16-bit successive-approximation analog-to-digital converter with one analog input, a 100 kSPS throughput rate, a single 5 V supply, and a 20-pin SOIC package. The device also provides an internal 2.5 V reference and a high-speed serial interface, making it suitable for precision signal acquisition when both resolution and compact implementation are important. Factory calibration is used by the manufacturer to minimize linearity error. An ADC is an interface component that converts a continuously varying analog voltage into a numeric value for processing, measurement, display, or control. The AD977 belongs to the successive-approximation, or SAR, ADC family. SAR converters compare the input against successive trial values, making this architecture suitable for medium-speed data acquisition, industrial measurement, communication equipment, and embedded instrumentation. Within the broader hierarchy, the AD977 is an ADC, then a data-conversion IC, and finally a semiconductor or analog-to-digital converter. The AD977BRZ provides a 16-bit conversion result, 100 kSPS throughput, and operation from one 5 V supply. Its internal 2.5 V reference reduces the external component count, while the serial interface supports compact board layouts. The 20-pin SOIC package uses surface-mount assembly and is available from distributors including DigiKey, Mouser, LCSC, Win Source, and Octopart. Technically, the converter uses a switched-capacitor successive-approximation architecture. The internal reference establishes the conversion scale, and the factory calibration is intended to improve offset and linearity performance. Because this is a medium-speed SAR converter rather than a flash or pipeline ADC, it provides a practical balance among throughput, resolution, power consumption, and implementation complexity for precision acquisition systems. Typical uses include precision process measurement, laboratory and test instrumentation, communications equipment, and embedded control systems. The 100 kSPS rate permits acquisition of relatively slow or medium-bandwidth signals, while the 16-bit resolution preserves fine amplitude detail. The serial interface can also reduce the number of parallel data paths when board space is constrained. Designers should verify the analog input range, acquisition timing, reference behavior, and serial-interface timing against the manufacturer datasheet before finalizing signal-chain calculations. Input buffering, source impedance, sampling-capacitor settling, digital grounding, and decoupling remain important even though the converter integrates reference and conversion circuitry. This product record combines verified manufacturer and distributor data with an honest drop-in assessment. It distinguishes the electrically compatible AD977CR option from broader functional substitutes, documents unavailable pricing and pinout details, and highlights the practical design information needed to choose and implement a 16-bit SAR ADC without treating similar converters as automatic PCB replacements.

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AD977CN - 16-Bit 100 kSPS ADC | Analog Devices
AD977CN

AD977CN - 16-Bit 100 kSPS ADC | Analog Devices

The Analog Devices AD977CN is a 16-bit, 100 kSPS successive-approximation analog-to-digital converter in a 20-pin through-hole DIP package. It operates from a single 5 V supply, supports unipolar and bipolar input ranges, and is designed for precision signal acquisition where 16-bit resolution is useful without the throughput demands of a flash converter. The AD977 family also includes the faster AD977A, which is specified at 200 kSPS. An ADC is a data-acquisition IC that converts an analog voltage into a digital code. A successive-approximation ADC, commonly called a SAR ADC, performs conversion by comparing the unknown input with an internally generated trial voltage and progressively refining a binary approximation. The AD977CN therefore belongs to the ADC, data-converter, signal-processing, and semiconductor hierarchy, with relevance to industrial measurement, instrumentation, communications, and embedded control systems. The converter provides a 16-bit resolution, a 100 kSPS throughput rate, and single 5 V operation. Its input architecture includes unipolar ranges of 5 V and 4 V and bipolar ranges of 5 V and 3.3 V, according to the verified manufacturer product information. Available interface choices and power-management behavior should be confirmed in the manufacturer datasheet for the exact AD977CN ordering configuration. Maximum power dissipation is listed as 100 mW in the supplied verified description, while a power-down mode is also indicated. Because this is a SAR ADC, the input is sampled and converted through a sequence of internal comparison decisions rather than a parallel flash architecture. This makes the converter suitable for control loops, sensor interfaces, test equipment, and communication front ends that need moderate speed and high resolution. The AD977CN is a 100 kSPS device, whereas AD977A is the 200 kSPS family variant; selecting the correct suffix is important when sample rate is a hard system constraint. AD977CN applications include industrial process monitoring, precision instrumentation, communications receivers, data-acquisition cards, and embedded measurement systems. In each case, the analog front end must establish the correct input range, provide suitable reference and drive circuitry, and account for acquisition time before conversion. The serial or parallel data interface and required digital support components should be selected from the datasheet and system clock plan. A key design consideration is the input and reference network. Incorrect source impedance, inadequate filtering, or unsuitable bypass capacitance can degrade effective resolution and conversion accuracy. The 5 V supply should be decoupled close to the device, and the analog input should be protected against overvoltage and transients. Because the AD977CN is listed as obsolete in one verified distributor-style source, new designs should confirm lifecycle status, availability, and any supported migration path before committing to production. This page consolidates the verified Analog Devices family description, distributor identity, package information, and practical replacement guidance for AD977CN. It also distinguishes confirmed facts from parameters that require the exact manufacturer datasheet, helping engineers evaluate the obsolete 16-bit SAR ADC without treating unverified electrical values as production specifications.

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AD977CNZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD977CNZ

AD977CNZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD977CNZ is a 16-bit, single-input successive-approximation analog-to-digital converter with a 100 kSPS throughput rate, operating from a single 5 V supply and housed in a 20-pin plastic DIP package. It combines a factory-calibrated switched-capacitor conversion core, an internal 2.5 V reference, and a high-speed serial interface for precision signal-acquisition systems. An ADC converts an analog input voltage into a digital code for measurement, control, recording, or signal processing. The AD977 belongs to the successive-approximation ADC family within the broader ADC/DAC and data-converter hierarchy. Its SAR architecture repeatedly compares the sampled input with a internally generated reference, making it suitable for applications requiring accurate conversion without the complexity of flash conversion. Key specifications include 16-bit resolution, one analog input, a 100 kSPS sampling rate, and operation from a single 5 V rail. Maximum power dissipation is 100 mW, supporting low-power acquisition systems. The supported operating-temperature range is -40°C to 85°C, while the 20-PDIP package is supplied in a tube for through-hole PCB assembly. Internally, the AD977 combines a switched-capacitor ADC, a 2.5 V internal reference, and a high-speed serial interface. Factory calibration minimizes offset, gain, and linearity errors, while listed AC testing includes signal-to-noise ratio and total harmonic distortion performance. The AD977 family provides 100 kSPS throughput, whereas the related AD977A family provides 200 kSPS. Typical uses include industrial process measurement, instrumentation, laboratory data acquisition, audio and low-frequency waveform sampling, sensor-interface systems, and embedded control platforms. The 100 kSPS rate is appropriate for acquiring slowly changing or moderate-bandwidth analog signals rather than high-frequency communications waveforms. Designers should provide a stable 5 V supply, observe the analog and reference grounding requirements, and validate input range and acquisition timing against the manufacturer datasheet. Because the serial interface, reference behavior, conversion timing, and digital signaling remain important to system accuracy, firmware and PCB validation should be completed before production release. This product page consolidates verified manufacturer and distributor specifications, package details, availability references, and selection guidance. It also distinguishes the AD977CNZ from the faster AD977A family and clearly identifies where equivalent drop-in replacement data was not established by the supplied cross-reference evidence.

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AD977CR - 16-Bit 100 kSPS Serial ADC | Analog Devices
AD977CR

AD977CR - 16-Bit 100 kSPS Serial ADC | Analog Devices

Analog Devices AD977CR is a 16-bit, 100 kSPS serial-output successive-approximation analog-to-digital converter operating from a single 5 V supply in a 20-pin SOIC package. The AD977 family supports unipolar input ranges of 0–5 V and 0–4 V and bipolar input ranges of ±5 V and ±3.3 V, with the input range selected through external circuitry. Its maximum stated power dissipation is 100 mW, while a dedicated power-down mode is available for systems requiring reduced consumption when conversion is not active. The converter is designed for instrumentation, industrial control, data acquisition, communications, and embedded signal-processing systems that require 16-bit resolution without the throughput rate of a high-speed flash converter. The AD977CR is identified by the verified listing as a 20-pin SOIC device supplied in a tube. Its suffix indicates a ceramic-package ordering option within the AD977 family, while the related AD977A reaches 200 kSPS. The AD977CR should therefore be selected when 100 kSPS is sufficient and the lower-power family variant is preferred. According to the Analog Devices product page, each device contains a successive-approximation conversion core and supports a single 5 V supply. The verified data identifies external-reference and input-range choices but does not provide a complete pin-name table, so the pin diagram is intentionally left unpopulated rather than reconstructed from assumptions. This page combines the verified 16-bit resolution, 100 kSPS throughput, supply requirements, input ranges, package information, pricing, and product-family distinctions with practical selection and design guidance.

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AD977CRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices
AD977CRZ

AD977CRZ - 16-Bit 100 kSPS SAR ADC | Analog Devices

Analog Devices AD977CRZ is a 16-bit successive-approximation analog-to-digital converter with a 100 kSPS throughput rate, operated from a single 5 V supply and housed in a 20-pin SOIC package. The converter combines a 16-bit sampling ADC, an internal reference, and a serial SPI-compatible interface in one low-power IC. An ADC is a data-acquisition IC that converts an analog voltage into a digital number for processing by a microcontroller, DSP, FPGA, or industrial controller. The AD977 belongs to the SAR ADC category, where a successive-approximation internal DAC drives a comparator until the converted result matches the analog input. SAR converters are useful when moderate conversion speed, low power, and simple serial connectivity are more important than maximum sampling throughput. Key features include 16-bit resolution, a 100 kSPS conversion rate, and operation from one 5 V supply. The verified data also identifies a maximum power dissipation of 100 mW, a power-down mode, and a serial SPI data interface. These characteristics make the AD977CRZ suitable for industrial instrumentation, process-control acquisition, data loggers, and embedded measurement systems where sampled bandwidth is measured in hundreds of hertz to tens of kilohertz. The device uses a successive-approximation conversion architecture rather than a flash, pipeline, or sigma-delta architecture. Each conversion requires repeated comparison of the input against an internally generated approximation. This architecture supports a relatively straightforward serial interface and low power dissipation, while the 16-bit word length provides substantially more code levels than an 8-bit converter. The single 5 V supply also simplifies analog and digital system integration when the selected interface and reference arrangement remain compatible. Typical uses include programmable laboratory instruments, temperature and pressure acquisition chains, factory-control modules, battery-powered field recorders, and embedded condition-monitoring equipment. In these systems, the ADC can be paired with sensors and instrumentation amplifiers, while its serial interface connects directly to a low-speed microcontroller or embedded control system. A key design consideration is that analog-input conditioning, reference quality, grounding, and digital-interface timing can be as important as the nominal converter resolution. Designers should follow the Analog Devices AD977 product page and datasheet for the complete electrical characteristics, pin functions, acquisition timing, and recommended application circuit rather than inferring missing details from distributor summaries. This page consolidates the verified manufacturer and distributor information, separates documented facts from unavailable data, and adds practical selection guidance that is not normally presented together on a distributor listing.

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AD9833BRUZ - 25MHz Low Power DDS | Analog Devices
AD9833BRUZ

AD9833BRUZ - 25MHz Low Power DDS | Analog Devices

The AD9833BRUZ is a low power, programmable waveform generator from Analog Devices capable of producing sine, triangular, and square wave outputs. It operates from a single 2.5V to 5.5V power supply and supports a maximum serial clock frequency of 25 MHz, enabling precise frequency and phase control in a compact 10-pin MSOP package. The device integrates a complete Direct Digital Synthesis (DDS) system on chip, including a 28-bit phase accumulator, a sine lookup table, and a 10-bit DAC, allowing the generation of high-resolution waveforms with minimal external components. Direct Digital Synthesis (DDS) is a method of generating analog waveforms digitally by accumulating phase increments and mapping them through a lookup table to produce sine, triangular, or square wave outputs. DDS offers advantages over analog oscillators, including precise frequency tuning, fast frequency hopping, and excellent phase continuity. The AD9833 is a member of the DDS family, which falls under the broader category of signal generation ICs used in test equipment, communication systems, and sensor excitation. Key features of the AD9833BRUZ include a 28-bit frequency register providing 0.1 Hz resolution at 25 MHz clock, a 10-bit DAC for amplitude control, and a power-down mode that reduces current consumption to 0.5 mA typical. The device supports both SPI and Microwire serial interfaces, making it easy to interface with microcontrollers. The narrowband SFDR is typically 72 dB, ensuring clean output spectra for frequency synthesis applications. The AD9833 uses a CMOS process, which contributes to its low power consumption of 20 mW at 3V. The internal architecture includes a phase accumulator that can be programmed for frequency and phase modulation, enabling applications such as FSK and PSK. The device also features a reset pin for initialization and a control register for configuring output waveform and power-down modes. Typical applications include frequency excitation for impedance measurements, signal generation for test equipment, and waveform generation for portable instrumentation. The low power and small package make it ideal for battery-powered devices. When designing with the AD9833, ensure proper decoupling on the power supply and use a clean clock source to achieve optimal SFDR performance.

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AD9833BRUZ-REEL7 - 25MHz DDS Waveform Generator | Analog Devices
AD9833BRUZ-REEL7

AD9833BRUZ-REEL7 - 25MHz DDS Waveform Generator | Analog Devices

The AD9833BRUZ-REEL7 is a low power, programmable waveform generator from Analog Devices that produces sine, triangular, and square wave outputs. It operates from a 2.3 V to 5.5 V supply and consumes only 12.65 mW at 3 V, making it ideal for battery-powered and portable applications. The device features a 28-bit frequency register, allowing fine frequency resolution of 0.1 Hz at 25 MHz clock, and a 10-bit DAC for amplitude control. It communicates via a 3-wire SPI interface, simplifying integration with microcontrollers and DSPs. A Direct Digital Synthesis (DDS) IC is a type of waveform generator that uses digital signal processing to synthesize analog waveforms from a fixed-frequency reference clock. It is a key component in frequency synthesis, modulation, and signal generation systems. DDS devices are part of the broader category of data converters and signal generation ICs, which are essential in test equipment, communication systems, and medical devices. Key features include a 25 MHz maximum clock frequency, 28-bit frequency resolution, and a 10-bit DAC. The AD9833 supports multiple output waveforms, including sine, triangular, and square waves, and can be programmed to output a constant level or a modulated signal. The device also includes a power-down mode that reduces current consumption to 0.5 µA, extending battery life in portable applications. The AD9833 uses a phase accumulator architecture to generate waveforms with high accuracy and stability. The phase accumulator increments by a frequency tuning word (FTW) each clock cycle, and the output is read from a lookup table. This architecture allows for fast frequency hopping and precise phase control, making it suitable for applications such as frequency-shift keying (FSK) and phase-shift keying (PSK) modulation. Typical applications include function generators, frequency synthesizers, impedance spectroscopy, and time domain reflectometry (TDR). The device is also used in audio and vibration testing, where precise frequency control is required. Its low power consumption and small package make it suitable for portable and handheld instruments. When designing with the AD9833, ensure that the SPI interface is properly configured and that the reference clock is stable and accurate. The output amplitude is set by the full-scale current of the DAC, which can be adjusted with an external resistor. Proper decoupling of the power supply and careful PCB layout are essential to minimize noise and jitter.

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