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مصنوعات (39,000+)

ADS7805PB - 16-Bit 100kHz SAR ADC, ±10V, 28-PDIP | Texas Instruments
ADS7805PB

ADS7805PB - 16-Bit 100kHz SAR ADC, ±10V, 28-PDIP | Texas Instruments

The Texas Instruments ADS7805PB is a 16-bit, 100 kHz successive-approximation (SAR) analog-to-digital converter with a standard ±10 V input range, 86 dB SINAD, and a complete on-chip sample-and-hold, reference, clock, and parallel microprocessor interface, all housed in a 28-pin PDIP (N) package. It accepts a single ±10 V or 0–4 V analog input and delivers 16-bit parallel data in a single 10 µs conversion cycle, making it a drop-in choice for industrial process control and data acquisition boards. A successive-approximation register (SAR) ADC is a class of precision converter that uses a binary-search algorithm against an internal capacitor-based charge-redistribution DAC to determine each bit of the output code one cycle at a time. SAR ADCs are valued in the broader data-converter hierarchy for combining 14–18 bit resolution, no pipeline latency, and excellent DC accuracy with moderate (tens to hundreds of kSPS) throughput. The ADS7805 family sits between slower integrating converters (e.g., AD7730) and high-speed pipeline ADCs (e.g., ADS62Pxx), making it a workhorse for industrial signal acquisition. Key specifications of the ADS7805PB include 100 kHz minimum sampling rate, ±10 V bipolar or 0–4 V unipolar input range, 86 dB minimum SINAD at 20 kHz input, low 10 µs typical conversion time, internal 2.5 V reference (with option for external reference), and 3-state parallel outputs for direct µP/microcontroller bus connection. The 28-pin PDIP (N) plastic DIP package supports through-hole assembly, breadboard prototyping, and legacy card cages that still require socketed parts. Architecturally, the ADS7805PB uses CMOS capacitor-based charge-redistribution techniques for both the SAR DAC and the sample-and-hold function, eliminating the need for external trimming. The internal clock, reference, and self-calibration logic keep the part simple to apply while still achieving ±1 LSB linearity and low aperture uncertainty. Typical applications include industrial process control (PLC analog input modules), multi-channel data-acquisition systems, precision instrumentation, weigh-scale and transducer readouts, and legacy medical/analytical instrument front-ends. The wide ±10 V input range lets designers connect directly to ±10 V industrial transmitters without external signal conditioning. When designing with this ADC, place a 10 µF tantalum and 0.1 µF ceramic bypass close to the +VCC and -VCC supply pins; the internal reference also benefits from a 10 µF tantalum at REF. Decoupling and a clean analog ground are essential to hit the 86 dB SINAD specification in noisy industrial environments. This page synthesizes distributor pricing, drop-in same-package alternatives, and PCB/grounding design notes specific to the ADS7805PB that are not collected on any single manufacturer or distributor page.

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ADS7805PG4 - 16-Bit 100kSPS SAR ADC | Texas Instruments
ADS7805PG4

ADS7805PG4 - 16-Bit 100kSPS SAR ADC | Texas Instruments

The Texas Instruments ADS7805PG4 is a 16-bit, 100 kSPS successive-approximation analog-to-digital converter (SAR ADC) housed in a 28-pin PDIP (through-hole DIP) package. It integrates a sample-and-hold, precision reference, calibration circuitry, and a high-speed parallel output interface on a single CMOS die, with a standard ±10 V input range and 5 V nominal analog supply. An SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm against an internal precision DAC. SAR ADCs sit in the converter hierarchy between flash converters (fastest, lowest resolution) and sigma-delta converters (slowest, highest resolution), making them ideal for medium-speed, medium-resolution precision measurement. The ADS7805PG4 is widely used in industrial process control, data acquisition systems, and instrumentation where true 16-bit performance at 100 kSPS is required. Key features include 86 dB minimum SINAD at 20 kHz input, ±10 V or 0-4 V / 0-5 V input ranges, an internal 2.5 V reference (externally overridable), single +5 V analog supply operation, and a low-power CMOS design. The parallel output interface provides direct connection to 8-bit, 12-bit, or 16-bit microprocessors with read-only access, simplifying system integration. Architecturally, the device uses a charge-redistribution SAR core with laser-trimmed calibration DACs to achieve ±0.5 LSB linearity after internal self-calibration at power-up. The internal reference and input scaling resistors form a complete signal-conditioning front end, eliminating the need for external precision op-amps in most applications. Typical applications include industrial process control loops, multichannel data acquisition boards, medical instrumentation front ends, and bench-top test equipment. The wide ±10 V input range makes the ADS7805PG4 directly compatible with industrial sensor outputs without additional signal conditioning. When designing with this part, observe the input RC network requirements and the capacitor selection guidance on pins 3 and 4 (REF and CAP) - a 2.2 µF capacitor on each pin is required for noise filtering. For new designs, the datasheet recommends considering the ADS8505 as the active replacement. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical PCB design notes not collected in a single place in the TI datasheet.

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ADS7805U - 16-Bit 100 kSPS SAR ADC | Texas Instruments
ADS7805U

ADS7805U - 16-Bit 100 kSPS SAR ADC | Texas Instruments

The Texas Instruments ADS7805U is a 16-bit, single-input, successive-approximation-register analog-to-digital converter with a 10 µs conversion time, equivalent to 100 kSPS, in a 28-pin SOIC package. It operates from a 4.75 V to 5.25 V supply and provides a microprocessor-compatible parallel interface with three-state output drivers. An SAR ADC is a sampling data-conversion category that compares the sampled input against a capacitor-based internal DAC during successive approximation. The ADS7805U integrates a 16-bit SAR core, sample-and-hold circuit, reference, clock, microprocessor interface, and three-state output drivers. This places a complete conversion subsystem within a single analog-to-digital converter IC. Its principal characteristics include 16-bit resolution, one analog input, a 10 µs conversion time, CMOS construction, and a 28-pin SOIC package. The parallel output interface supports direct connection to suitable microprocessor or digital-logic systems. Three-state drivers allow multiple devices sharing a data bus to place their outputs in a high-impedance state when not selected. Technically, the capacitor-based SAR conversion sequence provides deterministic sampling and conversion behavior suitable for instrumentation, industrial control, test equipment, and embedded measurement systems. The integrated reference and clock blocks reduce the number of external supporting components, while the single analog input simplifies front-end routing compared with multiplexed multi-channel converters. Typical uses include sensor signal acquisition, process-control monitoring, laboratory measurement, digital instrumentation, and industrial data logging. Designers must supply suitable input conditioning and reference bypassing, and must account for analog noise, settling time, acquisition time, and bus timing when connecting the converter to a controller. The main design trade-off is the 16-bit parallel interface: it provides direct high-resolution data access but requires more board traces and I/O resources than a serial-interface ADC. A 5 V supply range also means the device cannot directly operate from a 3.3 V system without appropriate interface and level-transition design. This page combines manufacturer and distributor information, verified package and conversion details, drop-in comparison data, and practical design considerations. It separates confirmed ADS7805U characteristics from unavailable electrical, pinout, price, and lifecycle details so engineers can identify what must still be confirmed in the manufacturer datasheet.

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ADS7805UE4 - 16-Bit 100kHz SAR ADC, ±10V Input | Texas Instruments
ADS7805UE4

ADS7805UE4 - 16-Bit 100kHz SAR ADC, ±10V Input | Texas Instruments

The Texas Instruments ADS7805UE4 is a 16-bit, 100 kHz sampling-rate, successive-approximation-register (SAR) analog-to-digital converter (ADC) with a single ±10 V input range and full parallel data output, packaged in a 28-pin SOIC (DW). The 'UE4' suffix indicates tube-packaging, RoHS-compliant lead-free finish with the standard industrial temperature grade. A SAR ADC is a type of data converter that performs a binary search through an internal capacitive digital-to-analog converter (CDAC) to resolve each conversion in N steps for an N-bit result. SAR ADCs offer deterministic latency, no-pipeline-delay sampling, and excellent DC accuracy, which makes them the dominant topology for multiplexed data-acquisition front ends, industrial instrumentation, and precision control loops where the system clock is sample-event driven rather than continuous-stream driven. Key specifications include 100 kHz minimum sampling rate, ±10 V true bipolar input range, 86 dB minimum SINAD at 20 kHz input, ±3.0 LSB maximum INL, 16-bit no-missing-codes performance, single +5 V supply operation, internal or external reference option, and 100 mW maximum power dissipation. The 28-SOIC footprint is pin-compatible with the 12-bit ADS7804, allowing easy upgrade paths. Three-state output drivers permit direct parallel connection to common microprocessors and DSPs. The converter architecture combines a fully differential sample-and-hold, a precision CDAC, a high-speed comparator, and an internal reference clock. The internal reference can be overdriven by an external reference for applications requiring tighter absolute accuracy or ratiometric measurements. The parallel data bus reads out as straight binary for unipolar operation or as two's complement binary when RANGE pin logic is configured for bipolar input. Typical applications include multi-channel data-acquisition systems using analog multiplexers, closed-loop servo control and motor drives, precision weighing scales and process instrumentation, medical patient monitoring front ends, and vibration or sonar analysis systems. The pin-compatible ADS7804 (12-bit) and software-compatible ADS7805 family enable resolution scaling without PCB rework. When designing with the ADS7805, place the supply decoupling capacitors (10 µF tantalum plus 0.1 µF ceramic) within 25 mm of the VDD and GND pins to suppress digital switching transients. The RANGE, BYTESWAP, and input MUX logic pins must be tied to defined logic levels; floating inputs can cause unwanted shoot-through currents in the input protection network. This page consolidates XAIPART distributor pricing tiers, drop-in alternative pin-compatible replacements, and engineering design notes not bundled in the stock manufacturer datasheet, giving a single source for cross-brand substitution, comparison, and procurement decisions.

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ADS7806P - 12-Bit 40kSPS SAR ADC | Texas Instruments
ADS7806P

ADS7806P - 12-Bit 40kSPS SAR ADC | Texas Instruments

The Texas Instruments ADS7806P is a low-power 12-bit sampling CMOS analog-to-digital converter (ADC) that uses a successive-approximation register (SAR) architecture to deliver 40 kSPS throughput in a 28-pin PDIP (P) package. It supports software-configurable input ranges of ±10V, 0V to +5V, and 0V to +4V from a single +5V supply, with both parallel and serial (binary two's-complement or straight binary) data outputs. Key headline specifications include ±1/2 LSB maximum INL and DNL, 72 dB minimum SINAD at 1 kHz input, 25 μs maximum acquisition+conversion time, 35 mW maximum power dissipation, and a power-down mode that drops quiescent draw to 50 μW. An internal 2.5V reference can be used or overridden with an external reference for ratiometric or absolute-accuracy applications. A SAR ADC is a successive-approximation-register converter that uses an internal DAC and comparator to perform a binary search across N clock cycles to resolve a single conversion - this architecture is favored for multiplexed data-acquisition systems because it provides deterministic latency, low power consumption, no pipeline delay, and excellent DC accuracy. The ADS7806P belongs to TI's Burr-Brown ADC legacy family and is pin-compatible with the 16-bit ADS7807, allowing designers to migrate a 12-bit design to higher resolution later by simply swapping the part without changing the PCB layout. Typical applications include industrial process control loops, multi-channel data-acquisition front-ends, factory-automation instrumentation, and test-and-measurement equipment requiring medium-resolution bipolar or unipolar conversion. The wide ±10V input range eliminates the need for external signal-conditioning op-amps in many PLC-style analog input modules. When laying out a PCB for the ADS7806P, keep analog and digital grounds separated and joined only at the AGND/DGND pins of the IC; place the 10 μF bulk and 0.1 μF bypass capacitors as close to the supply pins as possible. Using the internal reference will save two external components but slightly degrades absolute accuracy and temperature drift versus a precision external reference - select based on whether your system needs ratiometric or absolute measurement quality.

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ADS7806PBG4 - 12-Bit 40kSPS SAR ADC, 28-PDIP | Texas Instruments
ADS7806PBG4

ADS7806PBG4 - 12-Bit 40kSPS SAR ADC, 28-PDIP | Texas Instruments

The Texas Instruments ADS7806PBG4 is a low-power, 12-bit successive-approximation-register (SAR) analog-to-digital converter delivering up to 40 kSPS sampling rate with single 5V supply operation, packaged in a 28-pin Plastic DIP (0.300 inch, 7.62 mm) with through-hole mounting. According to the manufacturer datasheet, it accepts input ranges of +/-10V, 0V to +5V, and 0V to +4V, integrates a sample-and-hold amplifier, and supports both serial and parallel data interfaces for flexible MCU/DSP connectivity. Key specifications include maximum +/-1/2 LSB integral and differential nonlinearity, 72 dB minimum SINAD at 1 kHz input, and 35 mW maximum power dissipation with a 50 uW power-down mode. The architecture is CMOS SAR with internal or external reference, ensuring compatibility with bipolar industrial signals while operating from a unipolar 5V rail via front-end scaling. Typical applications include industrial process control data acquisition, multi-channel PLC analog input modules, portable instrumentation with battery power management, and precision sensor signal conditioning. The wide +/-10V input range also supports legacy transducer signal chains without external amplification. When designing with this device, ensure the analog input is properly buffered to avoid driving the switched-capacitor input directly. Decouple VDD with 10 uF + 0.1 uF capacitors placed within 5 mm of the supply pins.

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ADS7806PG4 - 12-Bit 40kSPS SAR ADC, Bipolar Inputs | Texas Instruments
ADS7806PG4

ADS7806PG4 - 12-Bit 40kSPS SAR ADC, Bipolar Inputs | Texas Instruments

The Texas Instruments ADS7806PG4 is a low-power, 12-bit, sampling Analog-to-Digital Converter that uses state-of-the-art CMOS structures to deliver 40 kSPS throughput in a 28-pin PDIP (N) through-hole package. According to the TI datasheet, the device integrates a complete 12-bit capacitor-based Successive Approximation Register (SAR) converter with sample-and-hold, an internal clock, an internal reference, and a microprocessor interface providing both parallel and serial output drivers. The 'G4' suffix indicates a Pb-free, RoHS-compliant tape-and-reel packaging option ordered under TI's standard catalog ordering system. An SAR Analog-to-Digital Converter is a type of data converter that uses an iterative binary-search algorithm against an internal capacitive ladder to determine the digital representation of an analog input voltage. Within the broader component hierarchy, an SAR ADC sits between high-resolution (but slow) delta-sigma converters and high-speed (but lower-resolution) flash converters, making it ideal for general-purpose industrial signal acquisition. The ADS7806 specifically targets bipolar-input data acquisition systems that require both true-bipolar measurement and low power consumption (35 mW typical, 50 µW in power-down mode). Key specifications from the verified datasheet include ±10 V and 0 V to 5 V true bipolar input ranges, 25 µs maximum acquisition-and-conversion time, ±½ LSB maximum integral and differential nonlinearity, and 72 dB minimum SINAD with a 1 kHz input signal. The converter operates from a single +5 V analog supply, with separate AVdd and DVdd pins for noise isolation. The parallel + serial output interface (configurable via the BYTE/SEQ pin) lets the host processor trade bus width for board real estate. Architecturally, the ADS7806 uses a charge-redistribution DAC array that inherently performs the sample-and-hold function during the acquisition phase, eliminating the need for an external input buffer. The internal 2.5 V reference is laser-trimmed and buffered, ensuring 12-bit performance without external reference components. Combined with the input protection network (±25 V tolerant at the analog input pin), the device provides robust signal-chain performance in industrial environments. Typical applications include multi-channel industrial process control, instrumentation and data-acquisition front ends, portable or battery-operated measurement systems, and test equipment requiring true bipolar input ranges. The combination of low power dissipation, internal reference, and flexible interface makes the ADS7806 well-suited for embedded industrial designs. When designing with this device, observe the analog/digital supply decoupling guidelines from the datasheet (10 µF and 0.1 µF capacitors at AVdd and DVdd) and respect the 25 µs acquisition timing budget to avoid conversion errors. The "PG4" package code indicates a Pb-free 28-pin PDIP (N) with Tube packaging; distributors ship the device in anti-static tubes, and the cross-reference note "Replaced by ADS8506" indicates TI's recommended migration path for new designs. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-ready view of the ADS7806PG4.

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ADS7806U - 12-Bit Low-Power SAR ADC | Texas Instruments
ADS7806U

ADS7806U - 12-Bit Low-Power SAR ADC | Texas Instruments

The Texas Instruments ADS7806U is a low-power, 12-bit sampling CMOS analog-to-digital converter with one SAR input, 72 dB minimum SINAD at a 1 kHz input, and a 25 µs maximum acquisition-and-conversion time. It supports input ranges of 0 V to +5 V, 0 V to +4 V, and ±10 V, operates from a single +5 V supply, and is packaged in a 28-pin SOIC package. The converter provides parallel and serial data outputs for flexible interface implementation. An SAR ADC is a sampling analog-to-digital converter that uses a successive-approximation register to compare the sampled input with successive internal reference levels. It belongs to the ADC hierarchy, which includes sampling ADCs, data converters, and semiconductor signal-processing devices. Compared with flash and pipeline ADC architectures, a SAR ADC generally combines straightforward control logic with practical resolution, accuracy, and power efficiency for instrumentation, industrial-control, and embedded measurement systems. The ADS7806U emphasizes low power and compact implementation. Maximum power dissipation is 35 mW, while power-down mode reduces consumption to 50 µW. Its 12-bit resolution supports 4096 quantization levels, and the specified integral nonlinearity and differential nonlinearity are each limited to ±1/2 LSB. A minimum SINAD of 72 dB with a 1 kHz input provides a useful indication of conversion performance, while internal or external reference selection allows the converter to be adapted to different system accuracy and noise requirements. The device accepts single-ended analog signals through one SAR input and supports both parallel and serial data-output styles. Its acquisition-and-conversion interval of no more than 25 µs makes it suitable for continuously refreshed measurement channels. The single +5 V supply architecture simplifies analog and digital rail planning, although input signals must remain within the selected range and the application must provide appropriate source impedance, filtering, and sampling-network components. Typical uses include industrial process control, sensor-interface modules, data acquisition systems, laboratory instruments, battery-powered equipment, and embedded monitoring systems. It is especially relevant when a design needs a low-power 12-bit converter with flexible output formats. For bipolar or wider-range instrumentation, the ±10 V input option allows the ADC to interface with suitable signal-conditioning circuits without requiring a negative supply at the converter. When laying out the ADS7806U, place the reference and analog-input connections away from digital output and clock traces, and keep input paths short to reduce noise pickup. Power-supply decoupling should be placed directly beside the supply pins. Input-source impedance and acquisition timing must be checked against the converter specifications so that the sampling capacitor can settle before conversion starts. This page combines the manufacturer product information with focused engineering guidance covering conversion performance, power behavior, interface choices, layout priorities, and verified replacement options. It also distinguishes true same-package drop-in alternatives from parts that would require a PCB footprint change, helping engineers assess compatibility before committing to a redesign.

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ADS7806U/1K - 12-Bit 40kHz SAR ADC, Parallel/Serial, SOIC-28 | TI
ADS7806U/1K

ADS7806U/1K - 12-Bit 40kHz SAR ADC, Parallel/Serial, SOIC-28 | TI

The Texas Instruments ADS7806U/1K is a low-power, 12-bit, sampling CMOS Analog-to-Digital Converter using a successive-approximation architecture. It supports up to 40 kS/s throughput with a 25 us max acquisition-plus-conversion time, and is housed in a 28-pin SOIC package. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that quantizes a continuous analog voltage into a discrete digital code. SAR (Successive-Approximation Register) ADCs convert one bit per clock cycle by comparing the input against an internal DAC, making them well suited for medium-speed, medium-resolution data acquisition. The ADS7806 sits in the SAR ADC family -> data acquisition ICs -> mixed-signal ICs -> integrated circuits, offering both parallel and serial data output interfaces. Key features include 35 mW maximum power dissipation, a 50 uW power-down mode for battery-friendly operation, +/-1/2 LSB maximum INL and DNL, and 72 dB minimum SINAD at 1 kHz input. The input range spans 0V to +5V (with software configuration to +/-5V and +/-4V), and the device operates from a single +5V supply. The combination of low power, parallel+serial interface, and single-supply operation makes it a flexible drop-in for embedded data acquisition. The architecture uses a capacitive-charge-distribution DAC with a sample-and-hold front end and an on-chip clock. The conversion is initiated by a CONVST pulse, and the result is available on either the parallel DB0-DB11 bus or a SPI-compatible serial port with internal/external clock option. Hardware byte-select pins let the host read high and low bytes sequentially on the parallel bus. Typical applications include industrial process control, portable instrumentation, data acquisition systems, and battery-powered sensor digitizers. The 50 uW power-down current is critical for handheld medical or field instruments where the ADC is idle most of the time. When designing with this device, ensure the input is within the source-impedance budget specified in the manufacturer datasheet to avoid conversion-time violations; the S/H front end must be fully settled in 25 us. Use a clean +5V analog supply with adequate decoupling, and route digital outputs away from the analog input traces to limit digital feedthrough. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet and distributor listings.

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ADS7806U/1KE4 - 12-Bit 40kSPS SAR ADC | Texas Instruments
ADS7806U/1KE4

ADS7806U/1KE4 - 12-Bit 40kSPS SAR ADC | Texas Instruments

The Texas Instruments ADS7806U/1KE4 is a 12-bit, 40 kSPS, single-supply, low-power successive-approximation-register (SAR) analog-to-digital converter housed in a 28-pin SOIC package, designed for industrial-temperature (-40C to +85C) operation. It accepts single-ended input ranges of +/-10 V, 0 V to +5 V, and 0 V to +4 V via pin-strapping, drawing only 35 mW during active conversion and dropping to 50 uW in power-down mode. The device supports both serial and parallel data output, internal or external reference, and delivers 72 dB minimum SINAD with a 1 kHz input. A Successive Approximation Register (SAR) ADC is a converter architecture that internally performs a binary search against the analog input, locking one bit per clock cycle until the final 12-bit code is latched in ~25 us. SAR converters sit within the broader hierarchy of analog-to-digital converters -> data converters -> mixed-signal ICs, and are favoured for applications that need deterministic latency, low latency per conversion, and no pipeline delay - unlike pipelined or delta-sigma ADCs that trade latency for higher speed or resolution. The ADS7806U/1KE4 specifically targets industrial signal chains where 5 V single-supply operation and bipolar-input capability are required. Key specifications include maximum 25 us acquisition-plus-conversion time, +/-1/2 LSB maximum integral non-linearity (INL) and differential non-linearity (DNL), 35 mW typical active power dissipation, and a true-differential sample-and-hold input structure. The converter is pin-compatible with the 16-bit ADS7807, allowing an upgrade path to higher resolution without PCB rework. Parallel-byte, parallel-word, and serial interface modes are user-selectable on start-up pins. The architecture uses a charge-redistribution DAC array, an onboard clock, and a precision reference buffer. An analog input front-end scales +/-10 V signals directly to the internal 0 V-4 V converter range, eliminating external op-amp signal conditioning in most cases. The internal reference is trimmed for low drift, and an external reference pin is also available for applications that require ratiometric measurement or absolute-accuracy calibration. Typical applications include industrial process-control analog input modules, multi-channel data-acquisition systems, portable instrumentation, power-line monitoring, and embedded control loops where 12-bit resolution and bipolar input are sufficient. The SO-28 footprint allows easy layout on 2-layer industrial PCBs. When designing with this device, select the input range by tying RANG pin high or low, and decouple REF with a low-ESR 10 uF ceramic plus 0.1 uF bypass combination. Ensure the RCAP pin is left floating only when using the internal reference. This page synthesises distributor pricing, drop-in TI and cross-brand alternatives, and practical layout notes not found in the manufacturer datasheet alone, giving procurement and design engineers a single decision-ready view of the part.

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ADS7806UE4 - 12-Bit 25us SAR ADC, 28-SOIC | Texas Instruments
ADS7806UE4

ADS7806UE4 - 12-Bit 25us SAR ADC, 28-SOIC | Texas Instruments

The Texas Instruments ADS7806UE4 is a 12-bit, low-power, sampling CMOS analog-to-digital converter (ADC) that performs a complete 16-bit-compatible acquisition and conversion cycle in 25 microseconds maximum, housed in a 28-pin SOIC (DW) package. It features one single-ended analog input channel, true 12-bit SAR architecture with internal sample-and-hold, and supports bipolar or unipolar input ranges of ±10V, 0V to +5V, and 0V to +4V from a single +5V supply. Output data is presented through a parallel (DB0-DB11 plus sign) or serial interface, with HW or SW control of the conversion sequence. What is a SAR ADC? A successive-approximation-register (SAR) ADC is a type of analog-to-digital converter that uses an internal comparator, a digital-to-analog converter (DAC), and a successive-approximation register to digitize an analog input one bit at a time. SAR ADCs sit within the broader taxonomy of Nyquist-rate data converters (ADC -> data converter -> mixed-signal IC -> semiconductor) and are valued for deterministic latency, no pipeline delay, and excellent DC accuracy at moderate sampling rates, making them ideal for multiplexed data acquisition and industrial process control. Key features of the ADS7806UE4 include 72 dB minimum SINAD with a 1 kHz input, ±1/2 LSB maximum INL and DNL (no missing codes), an internal or external reference option, and a true single +5V supply operation. Power dissipation is 35 mW maximum during active conversion and drops to just 50 µW in hardware-controlled power-down mode, allowing battery-powered and thermally-constrained systems to manage energy budgets without sacrificing dynamic range. Architecturally, the device uses a charge-redistribution DAC array with a low-noise comparator, laser-trimmed scaling resistors that establish the bipolar and unipolar input ranges, and a flexible serial/parallel digital interface that simplifies connection to microcontrollers, DSPs, and FPGAs. The pin-compatible 16-bit ADS7807 is offered for designs that need higher resolution within the same board layout, and a parallel 16-bit family is also documented in TI's data converter brochure. Typical applications include industrial process control data acquisition boards, portable instrumentation and battery-powered measurement front-ends, medical monitoring equipment front-ends, and multi-channel multiplexed data acquisition subsystems. Design tip: provide a clean +5V analog supply rail with sufficient decoupling near AVDGND, keep the analog input traces short and guarded, and add a small RC at the analog input for op-amp settling when the source impedance exceeds the recommended value. This page synthesizes distributor pricing, drop-in pin-compatible alternatives in the same 28-SOIC footprint, and practical design notes not consolidated on the manufacturer datasheet.

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ADS7806UG4 - 12-Bit 40kSPS SAR ADC | Texas Instruments
ADS7806UG4

ADS7806UG4 - 12-Bit 40kSPS SAR ADC | Texas Instruments

The Texas Instruments ADS7806UG4 is a low-power, 12-bit sampling CMOS Analog-to-Digital Converter (ADC) with a successive approximation register (SAR) architecture, offered in a 28-pin SOIC (DW) package. It features a maximum sampling rate of 40 kSPS, ±10V, 0V to +5V, and 0V to +4V true bipolar input ranges, and operates from a single +5V supply while drawing only 35 mW of power (50 µW in power-down mode). Key features include 12-bit resolution with no missing codes, ±1/2 LSB maximum INL and DNL, 72 dB minimum SINAD at a 1 kHz input, internal 2.5V reference (or external reference option), parallel and serial data output drivers, and pin compatibility with the 16-bit ADS7807. The 28-SOIC package allows easy migration to higher resolution within the same footprint. A SAR (Successive Approximation Register) ADC is a precision data-conversion topology that uses a binary-search algorithm against an internal DAC and comparator to digitize an analog input one bit at a time. SAR ADCs sit in the broader hierarchy of: ADC -> data converter -> signal-chain IC -> mixed-signal semiconductor. They are prized for deterministic latency, no-pipeline-delay behavior, and excellent DC accuracy, which is why the ADS7806UG4 remains a popular choice for multiplexed industrial data-acquisition systems. Typical applications include industrial process control, multi-channel data acquisition boards, instrumentation, portable battery-powered measurement, and medical monitoring front-ends. The single +5V supply and software-controlled power-down mode make it well suited for power-sensitive embedded designs. When designing with this device, ensure the analog input is properly buffered and that the SHDN pin is asserted for at least 1 µs to enter power-down. A 10 µF bypass capacitor on REF and 0.1 µF on VDD are recommended for stable conversions. The SAR architecture guarantees zero pipeline delay, simplifying multiplexed sampling. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ADS7807P - 16-Bit 40kSPS SAR ADC, ±10V Input | Texas Instruments
ADS7807P

ADS7807P - 16-Bit 40kSPS SAR ADC, ±10V Input | Texas Instruments

The Texas Instruments ADS7807P is a 16-bit, low-power, sampling CMOS Analog-to-Digital Converter (ADC) housed in a 28-pin PDIP (0.3-inch DIP-28) package, providing a pin-compatible upgrade path from the 12-bit ADS7806 family. It uses a successive-approximation-register (SAR) architecture with an internal sample-and-hold, clock, reference, and a flexible parallel/serial microprocessor interface. A successive-approximation-register ADC is a converter that performs a binary search against the analog input using an internal DAC, producing a digital output one bit at a time per clock cycle. Within the converter hierarchy, the SAR ADC sits between flash and sigma-delta converters: faster than sigma-delta, lower-power than flash, and ideally suited to multiplexed data-acquisition systems where 12-to-16-bit precision meets 10 kSPS-to-1 MSPS throughput. The ADS7807P occupies the 16-bit, ~40 kSPS node of this spectrum. Key features of the ADS7807P include ±1.5 LSB maximum integral nonlinearity (INL), 16-bit no-missing-codes performance, 86 dB minimum SINAD at a 1 kHz input, and three software-selectable input ranges: ±10 V, 0 V to +5 V, and 0 V to +4 V. Maximum power dissipation is 35 mW, and a hardware- or software-controlled power-down mode drops quiescent consumption to 50 µW, making the part attractive for battery-powered and multiplexed systems. Architecture-wise, the part uses a charge-redistribution CDAC with input transient suppression, internal 2.5 V reference (external override supported), and a single +5 V supply rail. The maximum acquisition-plus-conversion time is 25 µs, supporting a maximum throughput of approximately 40 kSPS in classic parallel mode. Typical applications include industrial process-control front ends, multi-channel data-acquisition boards, portable instrumentation, weigh-scale and sensor-signal digitization, and medical monitoring equipment such as patient-monitoring front ends. When designing with the ADS7807P, pay close attention to the input-protection RC network, keep analog and digital grounds separated at a single star point, and place the supply decoupling capacitors as close to the AVDD/DVDD pins as the PCB layout allows. A logic-low on R/C initiates conversion, and BUSY remains high until data is latched. This page consolidates distributor pricing, drop-in cross-references, and practical design notes that are not found in a single place in the manufacturer datasheet, accelerating evaluation and procurement decisions for design engineers.

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ADS7807PBG4 - 16-Bit 40kHz SAR ADC | Texas Instruments
ADS7807PBG4

ADS7807PBG4 - 16-Bit 40kHz SAR ADC | Texas Instruments

The Texas Instruments ADS7807PBG4 is a low-power, 16-bit, sampling CMOS analog-to-digital converter based on a successive-approximation-register (SAR) architecture, offering 40 kHz throughput in a 28-pin PDIP package. It operates from a single +5 V supply and dissipates only 35 mW typical, with a power-down mode consuming 50 µW for battery-friendly portable designs. Key specifications include ±1.5 LSB max INL, 16-bit no-missing-codes DNL, and 86 dB minimum SINAD with a 1 kHz input. A successive-approximation-register ADC is a type of data converter that performs a binary search through successive bit trials to resolve the input voltage in N clock cycles for N bits of resolution. SAR ADCs sit within the broader data-converter hierarchy of Nyquist-rate sampling ADCs, distinct from sigma-delta and pipeline architectures. They are prized for low latency, single-shot precision, and simplicity, making them the workhorse choice for industrial control loops, sensor digitisation, and instrumentation front ends. Key features of the ADS7807PBG4 include bipolar input ranges of ±5 V and 0 V to +4 V (plus 0 V to +5 V depending on configuration) without external signal conditioning, an integrated sample-and-hold amplifier, and flexible serial (SPI-compatible) or parallel data interface. The 25 µs maximum acquisition-and-conversion cycle keeps loop delays minimal, while external reference support lets designers trade noise, scale, and temperature drift against cost. The ADS7807PBG4 uses a charge-redistribution DAC array with a custom CMOS comparator and laser-trimmed resistors to achieve 16-bit linearity without missing codes across the full operating temperature range. Its input stage accepts single-ended bipolar signals through internal level-shifting, and the digital interface provides straight binary or two's-complement output coding for direct micro-controller or DSP hand-off. Typical applications include industrial process control, multi-channel data-acquisition systems, portable instrumentation, weigh scales, and battery-powered sensor digitisation. The low power dissipation makes it ideal for remote or handheld equipment. Designers should provide adequate input bandwidth, a low-impedance reference with a 10 µF bypass capacitor, and short analog-trace routing to preserve 86 dB SINAD. Do not exceed the absolute maximum ratings; for bipolar inputs add external clamping to keep transients within ±25 V. This page consolidates distributor pricing, drop-in alternatives, and design guidance that goes beyond the manufacturer datasheet to accelerate your evaluation and sourcing decisions.

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ADS7807PG4 - 16-Bit 40kSPS Low-Power SAR ADC | Texas Instruments
ADS7807PG4

ADS7807PG4 - 16-Bit 40kSPS Low-Power SAR ADC | Texas Instruments

The Texas Instruments ADS7807PG4 is a low-power, 16-bit, sampling CMOS Analog-to-Digital Converter (ADC) housed in a 28-pin PDIP (through-hole) package. Built on a successive approximation register (SAR) architecture with a capacitive charge-redistribution DAC, the device integrates a sample-and-hold, internal clock, internal reference, and a configurable digital interface that supports both parallel and serial output modes. The converter operates from a single +5 V supply and accepts bipolar or unipolar input ranges of +/-10 V, +/-5 V, 0 V to 10 V, and 0 V to 4 V, making it a flexible front-end for industrial data-acquisition boards. A Successive Approximation Register (SAR) ADC is a type of data converter that resolves one bit per clock cycle by comparing the sampled input against a binary-weighted capacitor network driven by an internal reference. SAR ADCs sit between flash converters (very fast, low resolution) and sigma-delta ADCs (high resolution, slower) in the data-converter hierarchy, offering a balance of speed, accuracy, and deterministic latency that is well suited to multiplexed multi-channel measurement systems. Key specifications of the ADS7807PG4 include a maximum sampling rate of 40 kSPS, maximum acquisition-plus-conversion time of 25 us, +/-1.5 LSB maximum INL, 16-bit no-missing-codes DNL, and 86 dB minimum SINAD with a 1 kHz input. The part draws only 35 mW during conversion and falls to 50 uW in power-down mode, which makes it well matched to battery-instrumented or thermally-constrained designs. Operating temperature range is -40 C to +85 C (industrial grade). Architecture-wise, the ADS7807PG4 uses an inherent sample-and-hold front-end that allows the input stage to settle before conversion, removing the need for an external buffer in most applications. The internal 2.5 V reference is laser-trimmed and can be overdriven externally if system calibration is required. The output data bus can be configured for 8-bit or 16-bit parallel mode, plus a synchronous serial mode for low-pin-count designs. Typical applications include industrial process-control data-acquisition front ends, multi-channel instrumentation digitizers, weigh-scale and strain-gauge signal chains, panel meters, battery-powered portable test equipment, and medical instrumentation front ends. The wide +/-10 V true-bipolar input range removes external signal-conditioning in many PLC and SCADA designs. When designing with this part, place a 10 uF tantalum in parallel with a 0.1 uF ceramic bypass capacitor as close as possible to the +5 V supply pin, and ensure the analog input source impedance stays below the manufacturer's recommended maximum to keep INL within data-sheet limits. Use the BYTE and R/C pins to configure interface mode and initiate conversions. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, giving engineers a single reference for the ADS7807PG4.

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ADS7807U - 16-Bit 40 kSPS Low-Power SAR ADC | Texas Instruments
ADS7807U

ADS7807U - 16-Bit 40 kSPS Low-Power SAR ADC | Texas Instruments

Texas Instruments ADS7807U is a 16-bit, 40 kSPS, single-input successive-approximation analog-to-digital converter in a 28-pin SOIC package. It operates from a single 4.75 V to 5.25 V supply, accepts bipolar ±10 V as well as unipolar 0 V to 5 V and 0 V to 4 V input ranges, and provides selectable internal or external reference operation. Maximum power dissipation is 35 mW, while power-down consumption is 50 µW. An ADC is a data-conversion semiconductor that converts a continuously varying analog voltage into a numeric code for measurement, control, or communication. The ADS7807 belongs to the sampling ADC hierarchy and uses the successive-approximation, or SAR, architecture. Unlike a pipeline or delta-sigma ADC, a SAR ADC successively resolves the input through a comparator and internal DAC, making this device suitable for compact, low-power instrumentation that needs precise conversion without a complex signal chain. The principal feature is 16-bit resolution with no missing codes, combined with differential nonlinearity specified as 16 bits and integral nonlinearity of ±1.5 LSB maximum. Signal-to-noise plus distortion is specified at a minimum of 86 dB for a 1 kHz input under the stated test conditions. Acquisition and conversion complete within 25 µs maximum, supporting the stated 40 kSPS conversion rate, while low-power operation limits dissipation to 35 mW maximum. The device supports both SPI-compatible serial output and a full parallel interface with byte select, giving designers flexibility in processor connectivity. A daisy-chain TAG function supports serial-interface arrangements, and an internal or external reference option permits the analog front end to use either the on-chip source or a higher-precision system reference. These features allow a single converter to serve serial microcontroller systems as well as parallel data-acquisition designs without changing the analog measurement function. Typical uses include industrial process monitoring, laboratory data acquisition, battery-powered measurement, factory automation, portable instrumentation, and control systems that require a compact 16-bit converter. In each case, the ADS7807U is placed between the measured sensor or conditioned analog signal and a digital controller, with the selected input range, reference, and serial or parallel interface matched to the system architecture. Designers should pay particular attention to source impedance, reference stability, input filtering, and grounding. Acquisition time must be sufficient for the input network to charge the internal sample-and-hold capacitor, and the analog return path should be kept short and quiet. Because the converter accepts both bipolar and unipolar ranges, the input-conditioning circuitry must not exceed the selected range or introduce nonlinear overdrive. This product page consolidates verified manufacturer and distributor specifications, pricing availability, family-level drop-in candidates, comparison parameters, and practical design guidance. It adds engineering-oriented context for engineers evaluating the ADS7807U while clearly separating verified values from information that still requires confirmation from an authoritative datasheet or distributor quote.

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ADS7807UBE4 - 16-Bit 40kHz SAR ADC, 28-SOIC | Texas Instruments
ADS7807UBE4

ADS7807UBE4 - 16-Bit 40kHz SAR ADC, 28-SOIC | Texas Instruments

The Texas Instruments ADS7807UBE4 is a low-power, 16-bit, sampling CMOS analog-to-digital converter (ADC) based on a successive-approximation-register (SAR) architecture, housed in a 28-pin SOIC (DW) package with 0.295" (7.50 mm) body width. It supports input ranges of +/-10V, 0V to +5V, and 0V to +4V from a single +5V supply, integrating a sample-and-hold, clock, reference, and serial/parallel data interface on-chip. The -E4 suffix denotes the Tape and Reel packaging option within the wider ADS7807 family originally introduced by Burr-Brown (now part of Texas Instruments). What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision converter type that uses a binary-search algorithm against an internal DAC to resolve an analog input one bit per conversion cycle. SAR ADCs sit in the precision data-converter hierarchy between delta-sigma converters (which trade speed for resolution) and flash converters (which trade resolution for speed), making the SAR topology the workhorse choice for 12-18 bit industrial, instrumentation, and data-acquisition applications where both resolution and deterministic latency matter. Key features include 35 mW maximum power dissipation, 50 uW power-down mode for battery-friendly duty-cycled operation, 25 us maximum acquisition-and-conversion time (yielding ~40 kSPS throughput), +/-1.5 LSB maximum INL, guaranteed 16-bit no-missing-codes DNL, and 86 dB minimum SINAD with a 1 kHz input. The pin-compatible 12-bit ADS7806 and the older pin-compatible 12-bit ADS7805 allow resolution migration on the same PCB layout. Internally, the ADS7807 uses a charge-redistribution capacitive DAC array for the SAR conversion, with the internal 2.5V reference driving the binary-weighted capacitor network. The converter offers both a serial (SPI/QSPI/MICROWIRE-compatible) interface and a parallel (8/16-bit) data bus, multiplexed on the same pins, enabling flexible MCU or DSP hook-up without external glue logic. A hardware BYS pin lets the user bypass the internal reference when system-level ratiometric accuracy is required. Typical applications include industrial process-control analog input modules, multi-channel data-acquisition (DAQ) boards, weigh-scale front ends, pen-trace digitizers, portable medical instrumentation, and precision sensor signal chains. The wide bipolar +/-10V input range also makes the part a strong fit for retrofit of legacy 12-bit +/10V systems that need higher resolution without changing the front-end scaling. When designing with the ADS7807UBE4, note that the part draws ~7 mA from +5V during conversion and drops to ~10 uA in power-down; therefore, the application logic should gate BUSY/R/C and shutdown for thermal and battery optimization. A 10 uF (minimum) tantalum plus 0.1 uF ceramic at +VANA and +VAND is recommended close to the pins to keep the reference regulator noise off the conversion floor. This page synthesizes distributor pricing, drop-in alternative analysis, and practical PCB/thermal notes that go well beyond what the manufacturer datasheet reproduces on its own.

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ADS7808P 12-Bit 100 kHz Serial ADC | Texas Instruments
ADS7808P

ADS7808P 12-Bit 100 kHz Serial ADC | Texas Instruments

Texas Instruments ADS7808P is a 12-bit, 10 µs serial CMOS sampling analog-to-digital converter with a 100 kHz sampling rate, six specified input ranges including ±10 V and 0 V to 5 V, and a single +5 V supply. The device is packaged in a 20-pin plastic DIP (20-PDIP) package. Its 72 dB SINAD performance and ±1/2 LSB INL and DNL characteristics make it suitable for industrial instrumentation, data acquisition, process control, and precision signal-chain designs that require a compact, low-power serial ADC. An ADC, or analog-to-digital converter, is an integrated circuit that converts a continuously varying analog voltage into a digital code. The ADS7808P belongs to the SAR ADC family: a sample-and-hold circuit captures the input, and a capacitor-based successive-approximation register converts the captured voltage into a 12-bit result. This architecture combines deterministic conversion behavior with relatively low power consumption, making it useful when a system needs accurate measurements without a high-speed flash converter or complex external acquisition hardware. Key features include a 100 kHz maximum sampling rate, 72 dB SINAD with a 45 kHz input signal, six specified input ranges, and a serial output interface that can use either the internal clock or an external data clock. The converter also supports internal or external references. Its innovative single +5 V supply operation keeps system power requirements straightforward, while power dissipation remains below 100 mW according to the manufacturer datasheet. An output synchronization pulse helps interface the converter with standard digital signal processors. The serial interface reduces the number of signal lines required on a mixed-signal PCB, although the conversion timing and serial clock relationship must be handled correctly in firmware or external logic. The internal reference simplifies designs that do not need an externally trimmed or calibrated voltage source. The six input ranges support bipolar and unipolar measurement systems, allowing the same converter family to address sensor signals, industrial process voltages, and conditioned analog outputs. The 10 µs conversion time corresponds to the stated 100 kHz throughput capability when the interface permits continuous operation. Typical applications include multichannel industrial data acquisition, factory process monitoring, programmable logic controller analog input modules, laboratory measurement equipment, and embedded control systems. The ±10 V ranges are particularly useful for legacy industrial signals, while the 0 V to 5 V range suits sensors and low-voltage analog systems. The 12-bit resolution provides 4096 digital code levels across the selected input range and is appropriate for many control and monitoring tasks that require more precision than a coarse 8-bit converter but do not require a 16-bit part. A key design consideration is the analog input and reference network. Place the input filtering components close to the converter pins, use a low-noise reference arrangement, and keep digital clock and serial-data traces away from sensitive analog nodes. Check timing against the external data-clock option when communicating with a DSP, because synchronization behavior affects how each conversion is framed and sampled. This page combines the ADS7808P manufacturer specifications, pin and package guidance, application analysis, and drop-in-replacement criteria to support faster engineering review. Because exact replacement qualification depends on package, pinout, resolution, input range, timing, and supply requirements, any substitute should be checked against the manufacturer datasheet before production use.

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ADS7808U - 12-Bit 100 kHz SAR ADC | Texas Instruments
ADS7808U

ADS7808U - 12-Bit 100 kHz SAR ADC | Texas Instruments

The Texas Instruments ADS7808U is a 12-bit, 10-µs serial CMOS-sampling analog-to-digital converter with a 100 kHz sampling rate, packaged in a 20-pin SOIC. It combines a capacitor-based SAR ADC, sample-and-hold circuit, reference, clock, and serial data interface in one device, delivering 72 dB SINAD with a 45 kHz input. Six specified input ranges and support for internal or external references allow the converter to accommodate different sensor and measurement signals. An ADC is an analog-to-digital converter, a mixed-signal semiconductor that converts a continuous voltage into a numeric code for measurement, control, or processing. The ADS7808 belongs to the SAR ADC hierarchy, where successive approximation compares the sampled input against a capacitor DAC. Compared with flash, pipelined, and sigma-delta converters, this architecture provides straightforward low-power conversion and a compact serial interface suitable for embedded acquisition systems. Key features include a maximum sampling rate of 100 kHz, 12-bit resolution, and linearity specified as ±1/2 LSB for INL and DNL. The converter operates from a single +5 V supply, uses a serial output, and accepts one analog input. Its maximum power dissipation is 100 mW. Pin compatibility with the 16-bit ADS7809 provides an upgrade path when greater resolution is needed without changing the package architecture. Internally, the ADS7808 uses state-of-the-art CMOS structures and supports conversion with its internal clock or synchronization to an external data clock. An output synchronization pulse simplifies interfacing with DSP-based systems. The internal reference can be used for standalone operation, while an external reference offers a route to improve stability or share precision reference circuitry across multiple channels. Typical applications include industrial process measurement, factory automation, DSP data acquisition, closed-loop control, and embedded instrumentation. The 100 kHz conversion rate and 12-bit code width are suitable for signals where rapid sampling and moderate resolution are required. The device is also appropriate for battery-powered or compact industrial systems because its stated maximum power dissipation is only 100 mW. When designing a circuit around the ADS7808U, verify the selected input range, reference configuration, logic levels, and digital interface timing against the manufacturer datasheet. Decoupling and analog signal-path layout are critical because the converter contains a sample-and-hold stage and may be sensitive to supply and reference noise. Confirm the complete conversion and data-read cycle before synchronizing it to a DSP. This page consolidates verified manufacturer and distributor information, package details, application guidance, and clearly qualified drop-in alternatives. It also highlights where direct cross-reference evidence is limited and where engineers must verify pin behavior, electrical limits, and availability before approving a replacement.

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ADS7808UB/1K - 12-Bit 100kHz Serial SAR ADC | Texas Instruments
ADS7808UB/1K

ADS7808UB/1K - 12-Bit 100kHz Serial SAR ADC | Texas Instruments

The Texas Instruments ADS7808UB/1K is a 12-bit, 10 µs successive-approximation-register (SAR) analog-to-digital converter with a 100 kHz sampling rate, housed in a 20-pin SOIC (DW) package supplied on a 1,000-unit tape-and-reel carrier. The part integrates a precision sample-and-hold, internal reference, conversion clock, and a synchronous serial data interface, and is rated for an industrial –40 °C to +85 °C operating range on a +5 V single supply. An SAR ADC is a successive-approximation-register analog-to-digital converter: it compares the sampled input against a binary-weighted internal DAC bit-by-bit in N clock cycles (here N = 12), producing a deterministic, low-latency conversion ideal for multiplexed data-acquisition, motor control feedback loops, and DSP front-ends. Within the broader taxonomy, the ADS7808UB sits at: ADC -> data converter -> signal-chain IC -> semiconductor. The 72 dB SINAD and ±½ LSB INL/DNL specifications confirm true 12-bit performance with no missing codes. Key features include 100 kHz throughput, 72 dB SINAD at 45 kHz input, ±½ LSB integral and differential nonlinearity, six factory-trimmed input ranges (0–5 V, 0–10 V, ±5 V, ±10 V, etc.), serial data output that can be clocked from the internal oscillator or an external DSP clock, and a hardware SYNC pulse that simplifies frame alignment to standard serial ports. The reference is internal by default but may be overdriven externally for multi-channel ratio-metric systems. Typical applications include industrial process-control front-ends, multi-channel data-acquisition boards, DSP-based vibration and motor-control signal chains, portable instrumentation, and any pin-compatible upgrade path from the older ADS7808. When designing, note that the device is pin-compatible with the 16-bit ADS7809, providing an upgrade route without PCB rework, and that the internal reference settling time influences acquisition timing at higher throughput rates.

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ADS7809U - 16-Bit 100 kHz SAR ADC | Texas Instruments
ADS7809U

ADS7809U - 16-Bit 100 kHz SAR ADC | Texas Instruments

The Texas Instruments ADS7809U is a 16-bit, 100 kHz sampling successive-approximation register ADC with a 10 µs conversion time, six specified input ranges, and serial output in a 20-pin SOIC (DW) package. It operates from a single +5 V supply and can use either its internal clock or an external data clock. An SAR analog-to-digital converter is a sampling ADC that repeatedly estimates the input voltage through successive comparison steps. It belongs to the broader ADC category and provides a practical balance of resolution, conversion speed, power consumption, and circuit complexity. The ADS7809U combines a capacitor-based 16-bit SAR core, sample-and-hold circuitry, a reference, clocking, and a serial interface in one device. Key specifications include 16-bit resolution, a 100 kHz sampling rate, 86 dB SINAD with a 20 kHz input, and ±2 LSB integral nonlinearity. The converter also features 16-bit DNL with no missing codes, six specified input ranges, and single +5 V operation. These characteristics make it appropriate for precision industrial measurement, instrumentation, control, and signal-acquisition systems. The capacitor-based SAR architecture converts the sampled analog input through successive approximation. Data may be transferred through the serial interface using the internal oscillator or synchronized to an external data clock, giving the system designer flexibility in clocking and sampling control. The manufacturer data also identifies the ADS7809 as pin-compatible with the ADS7808, which can simplify comparison between related converter implementations. Typical uses include factory process monitoring, sensor-interface digitizers, laboratory measurement equipment, industrial control loops, and embedded data acquisition. The 86 dB SINAD figure is particularly relevant when the converted signal contains relatively little noise, while the 100 kHz sampling rate supports applications that require substantially more update speed than a slow-resolution integrating ADC. Designers should pay close attention to reference quality, source impedance, analog trace routing, decoupling, and digital-interface timing. The input network and reference must provide low enough noise and settling behavior to preserve the converter's specified accuracy, while the serial interface and clock source must meet the timing requirements described by Texas Instruments. This product data consolidates the verified manufacturer and distributor findings with explicit data gaps, practical engineering guidance, and same-footprint replacement analysis. It is intended to help engineers identify the correct ADC, validate board-level assumptions, and compare genuine 20-pin SOIC drop-in options without conflating merely similar devices with compatible replacements.

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ADS7810U - 12-Bit 800 kHz SAR ADC | Texas Instruments
ADS7810U

ADS7810U - 12-Bit 800 kHz SAR ADC | Texas Instruments

Texas Instruments ADS7810U is a 12-bit successive-approximation-register analog-to-digital converter with a sampling rate of 800 kSPS, a 1.25 µs throughput time, and a single-ended analog input in a 28-pin SOIC package. It accepts a standard ±10 V input range and uses a parallel data interface with latches for transferring converted results. The converter also includes an internal reference, sample-and-hold circuit, and clock circuitry. An ADC is a data-conversion IC that transforms an analog voltage into a digital code for measurement, control, monitoring, or signal-processing systems. The ADS7810 belongs to the hierarchy of ADC, data-converter IC, signal-processing IC, and semiconductor. Its SAR architecture repeatedly compares the sampled input with an internal DAC, determining one output bit during each conversion step. This makes it appropriate for relatively high-speed industrial instrumentation where serial-interface overhead is undesirable. Key performance characteristics include 12-bit resolution, 800 kSPS sampling, ±3/4 LSB maximum integral nonlinearity, ±1 LSB maximum differential nonlinearity, and minimum SINAD of 69 dB with a 250 kHz input. The ±10 V input range supports direct acquisition of bipolar industrial signals. A 5 V digital supply supports compatibility with conventional parallel digital logic, while the analog supply operates from ±5 V according to the product description. The integrated sample-and-hold, reference, clock, and latched parallel outputs reduce the number of external support functions required. The 28-pin SOIC package is larger than modern fine-pitch packages but remains practical for through-hole assembly and moderate-density mixed-signal boards. Because the converter uses a parallel interface, its 12 output data lines require careful routing and adequate grounding to avoid logic coupling into the high-impedance analog input. Typical uses include industrial process monitoring, instrumentation, waveform capture, laboratory equipment, and embedded data-acquisition systems. Engineers should treat the analog input as a high-impedance node, provide adequate bypassing at the supply pins, and preserve the converter’s specified input-voltage limits. The ADC is not intended for signals outside its ±10 V range without suitable external attenuation or protection. A primary design consideration is signal conditioning. The source impedance, acquisition time, and input-network capacitance determine whether the sampled voltage can settle accurately within the converter’s acquisition interval. Short traces, guarding, clean references, and separated analog and digital return paths are especially important when converting small signals at high throughput. This page combines the manufacturer-linked datasheet information with a practical focus on acquisition timing, input conditioning, layout, and verified drop-in comparisons. It also distinguishes true same-package replacements from broader functional equivalents so engineers can assess PCB-reuse risk before selecting an alternative.

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ADS7810U/1KG4 - 12-Bit 800kHz SAR ADC | Texas Instruments
ADS7810U/1KG4

ADS7810U/1KG4 - 12-Bit 800kHz SAR ADC | Texas Instruments

The Texas Instruments ADS7810U/1KG4 is a 12-bit, 800 kHz sampling successive approximation register (SAR) analog-to-digital converter with one single-ended input, internal sample-and-hold, internal reference, and a parallel data interface with output latches, housed in a 28-pin SOIC package. According to the manufacturer datasheet, it achieves a 1.25 us throughput time, 69 dB minimum SINAD with a 250 kHz input, +/-3/4 LSB maximum INL, and +/-1 LSB maximum DNL. The ADC accepts a standard +/-10 V input range and operates from analog supplies of +/-5 V plus a 5 V digital supply. An SAR ADC (Successive Approximation Register analog-to-digital converter) is a precision data-conversion architecture that uses a binary-search algorithm against an internal capacitive DAC to resolve an analog input one bit per clock cycle, producing deterministic latency and zero pipeline delay. In the broader data-converter hierarchy, SAR ADCs sit between flash converters (fastest, lowest resolution) and sigma-delta ADCs (slowest, highest resolution), and they are the dominant choice for 8- to 18-bit industrial, instrumentation, and process-control applications. Key features include an internal 2.5 V reference (with external-reference override option), a complete S/H, internal clock, self-bipolar input scaling that supports true +/-10 V swing, and a parallel data bus with read-only or write-then-read handshake modes. The 28-SOIC package provides robust mechanical handling for socketed designs and through-hole-style rework flows, while still being surface-mount-compatible for automated assembly. The ADS7810 architecture combines a charge-redistribution capacitive DAC with a low-noise comparator and on-chip clock generator, eliminating the need for an external sampling clock. The internal reference is trimmed for low drift, and the bipolar input network uses precision thin-film resistors for accurate gain, which is what enables the +/-10 V input range from a single-ended source on a +/-5 V analog supply. Typical applications include industrial process control, data acquisition systems, instrumentation, portable or bench-top test equipment, and optical or analytical front-ends where mid-resolution 12-bit conversion at sub-microsecond throughput is required. The wide +/-10 V input also makes it well suited to legacy 4-20 mA loop interfaces and motor-control position feedback. When designing with this ADC, pay close attention to the analog and digital supply decoupling network: at least 10 uF tantalum and 0.1 uF ceramic at each AVdd and DVdd pin, with the ground-return path kept separate to prevent digital switching noise from coupling into the SAR comparator. A small RC anti-alias filter (typically 100 ohm and 1 nF) at the input is recommended to limit wideband noise into the input network. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet. The /1KG4 suffix designates a 1,000-piece tape-and-reel packaging variant with green (Pb-free, RoHS-compliant) material set; the underlying die and electrical specifications are identical to the standard ADS7810U.

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ADS7810UB - 12-Bit 800kHz SAR ADC ±10V | Texas Instruments
ADS7810UB

ADS7810UB - 12-Bit 800kHz SAR ADC ±10V | Texas Instruments

The Texas Instruments ADS7810UB is a 12-bit, 800 kHz sampling CMOS analog-to-digital converter (ADC) that delivers 1.25 µs throughput in a 28-pin SOIC (DW) package. It accepts a standard ±10 V input range, integrates a SAR architecture with inherent sample-and-hold (S/H), an internal reference, and a parallel microprocessor-compatible digital interface with output latches. According to the manufacturer datasheet, the device achieves 69 dB minimum SINAD at 250 kHz input, ±3/4 LSB maximum INL, and ±1 LSB maximum DNL at 12 bits. A successive-approximation register (SAR) ADC is a precision converter topology that resolves a single conversion in N clock cycles by switching a matched binary-weighted capacitor array against the input voltage. SAR ADCs sit at the bottom of the converter hierarchy: SAR ADC -> Nyquist-rate ADC -> data converter -> mixed-signal IC. They are favoured over delta-sigma or pipeline types when low-latency, single-shot acquisition with bipolar industrial input ranges is required. Key features include a complete single-chip solution (no external reference or S/H required), a wide ±10 V input range well suited to industrial transducer signal levels, low aperture uncertainty, and 8 + 4 parallel output bits that interface directly to standard microprocessors and DSPs. The internal reference is trimmed and the device draws low power, making it attractive for multi-channel multiplexed data-acquisition boards. Architecturally, the ADS7810UB uses a charge-redistribution capacitor DAC for SAR conversion, a buried-zener or bandgap-derived internal reference, and an onboard clock generator, eliminating most external components. Its parallel interface supports independent /RD and /CONVST control lines for synchronous sampling in multiple-ADC systems. Typical applications include industrial process-control front ends, factory-automation data-acquisition cards, medical instrumentation front ends, and the analog input stages of PLCs. The bipolar ±10 V range connects directly to many 4-20 mA loop receivers and transducer outputs after a single resistor scale. When designing with this part, ensure the analog ground and digital ground planes are joined at a single point near the converter and bypass supplies with a 10 µF tantalum in parallel with a 0.1 µF ceramic. Avoid routing digital switching edges near the analog inputs to preserve the 69 dB SINAD floor. This page synthesizes distributor pricing, drop-in alternatives in the same 28-SOIC footprint, and practical design notes not collected in any single manufacturer datasheet.

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