ADC/DAC
מוצרים (3,100+)
ADS774JU - 12-Bit 125 kSPS SAR ADC | Texas Instruments
The Texas Instruments ADS774JU is a 12-bit, single-input successive-approximation analog-to-digital converter with a 125 kSPS conversion rate, housed in a 28-pin SOIC (DW) package. It provides an 8.5 µs maximum acquisition and conversion time over the operating-temperature range and operates from a single +5 V supply. The device combines an internal sampling circuit, reference, clock, microprocessor interface, three-state outputs, and scaling resistors for ±10 V input ranges. An ADC is the electronic interface that converts an analog voltage into a numeric value for processing, measurement, or control. The ADS774 belongs to the successive-approximation ADC family, whose internal capacitor-array DAC compares a sampled input against successive trial voltages. Compared with flash and high-speed pipeline converters, this SAR architecture is appropriate for moderate-speed, high-resolution industrial instrumentation where a parallel microprocessor interface and integrated sampling simplify system design. The ADS774JU's principal features include 12-bit resolution, one analog input, a 28-pin SOIC package, and a 125 kSPS nominal conversion rate. According to the manufacturer datasheet, it replaces ADC574, ADC674, and ADC774 devices in most applications while adding internal sampling, lower power consumption, and single-supply operation. A maximum acquisition-and-conversion time of 8.5 µs supports process monitoring and general data-acquisition systems. Internally, the converter uses a low-power CMOS capacitor-array CDAC. Its microprocessor-compatible output uses three-state logic, allowing the data bus to share access with other bus devices. The provided ordering information identifies the JU temperature grade as operating from -40 °C to +85 °C. The SOIC (DW) package provides 28 pins and is suitable for conventional through-hole board assembly, socketed prototyping, and legacy industrial control systems. Typical applications include industrial process-control loops, instrumentation, data acquisition, digital voltmeter and panel-meter designs, and legacy microprocessor interfaces. The device is particularly relevant when a system needs a direct replacement for older ADC574-, ADC674-, or ADC774-based hardware and requires internal sample-and-hold behavior rather than an external sampling circuit. Designers should verify the analog input range, reference accuracy, acquisition timing, and output-code format against the system requirements before replacing an older converter. Decoupling should be placed close to the supply pins, and unused digital outputs should be handled according to the manufacturer's bus and power-sequencing guidance. This page consolidates the verified manufacturer and distributor information for the ADS774JU, distinguishes the few confirmed same-package drop-in options, and adds application guidance, parameter comparisons, and practical design considerations for engineers evaluating legacy data-conversion upgrades.
ADS774KE - 12-Bit 125 kSPS SAR ADC | Texas Instruments
Texas Instruments ADS774KE is a 12-bit, single-channel, successive-approximation analog-to-digital converter with a maximum conversion time of 8.5 us, an integrated sampling function, and microprocessor-compatible parallel interfacing. The device is supplied in a 28-pin PDIP package and operates from a single +5 V supply, making it suitable for industrial data-acquisition, instrumentation, control, and embedded measurement systems. An ADC is a data-converter IC that converts an analog input voltage into a digital value for processing by a microprocessor, microcontroller, programmable logic controller, or digital signal processor. Successive-approximation converters repeatedly compare the input voltage with an internally generated DAC until the residual falls below one least-significant-bit threshold. The ADS774 combines that conversion technique with an internal sampling network, reference, clock, and microprocessor interface to form a complete sampling ADC. The primary characteristics of the ADS774KE are 12-bit resolution, one analog input channel, an 8.5 us maximum conversion time over the specified temperature range, and operation from a single +5 V supply. Its maximum sampling frequency is identified as 125 kSPS, while the product listing also describes approximately 117 kHz sampling. The parallel digital interface allows the converter to transfer each 12-bit result directly into a microprocessor or other parallel data bus. The internal capacitor-array CDAC implements the successive-approximation conversion function in low-power CMOS. Because sampling is integrated into the converter, most designs do not require a separate sample-and-hold amplifier. The complete converter function, including its reference and clock, reduces external circuit complexity, although the input source still needs to satisfy the acquisition, impedance, settling-time, and bypass-capacitance requirements described by Texas Instruments. ADS774KE is applicable in process monitoring, industrial sensor interfaces, laboratory measurement equipment, digital panel meters, factory-control systems, and legacy microprocessor data-acquisition cards. It is particularly relevant when an existing parallel-bus system needs a complete 12-bit conversion function and the added integration of the ADS774 reduces the component count compared with a discrete sample-and-hold, reference, converter, and interface arrangement. Designers should pay close attention to analog grounding, input-source impedance, reference behavior, and the acquisition interval available before each conversion. Place the bypass capacitors specified in the manufacturer datasheet close to their associated supply pins, and route analog input traces away from digital clock and interface lines. Confirm timing against the host processor because the ADS774 requires control signals and data acquisition to be coordinated within its conversion sequence. This page combines the manufacturer function description with package, resolution, interface, application, and replacement guidance. It also separates verified drop-in choices from older converter families so engineers can assess board-level compatibility before committing to a replacement.
ADS774KU - 12-Bit 125 kSPS SAR ADC | Texas Instruments
Texas Instruments ADS774KU is a 12-bit, single-input successive-approximation analog-to-digital converter capable of 125 kSPS operation and packaged in a 28-pin SOIC. It combines a 12-bit CDAC, internal sampling circuitry, reference, clock, and microprocessor interface for complete data-acquisition conversion in a single package. An ADC is an interface IC that converts an analog voltage into a digital code for processing, measurement, or control. The successive-approximation, or SAR, architecture compares the sampled input against an internal CDAC and internal reference through a sequence of conversion steps. The ADS774 family follows the hierarchy of data-converter IC, analog-to-digital converter, and microprocessor-compatible sampling ADC, reducing the need for external sample-and-hold and supporting direct connection to parallel microprocessor buses. The primary electrical features include 12-bit resolution, one single-ended analog input, a maximum sampling rate of 125 kSPS, and a maximum conversion time of 8.5 microseconds over temperature. The converter can operate from a single +5 V supply and supports analog input ranges extending to ±16.5 V in the cited family information. Its internal reference, clock, sampling network, and byte-wide parallel interface make it suitable for compact data-acquisition and industrial-control systems. Internally, the ADS774 uses a low-power CMOS capacitor-array DAC and successive-approximation conversion sequence. Internal sampling captures the input before conversion, while the reference and oscillator support a self-contained measurement channel. The byte-wide parallel outputs suit microprocessors and control logic that read the converted code directly. Designers should still verify acquisition timing, bus timing, input settling, and reference requirements against the manufacturer datasheet for the exact operating conditions. Typical uses include industrial process monitoring, sensor signal acquisition, laboratory measurement equipment, embedded control systems, and legacy microprocessor-based data acquisition. The 28-pin SOIC package also supports board-level migration to documented pin-compatible ADS774 family variants when temperature grade, accuracy, or lifecycle requirements differ. Layout and signal-integrity practices are as important as nominal converter performance. Keep analog input traces short, place input and reference bypass components close to their associated pins, and route digital outputs away from sensitive analog nodes. Confirm acquisition time against the source-impedance and sampling-capacitor requirements before selecting the input buffer or external network. This page organizes the ADS774KU specifications, lifecycle information, package details, drop-in family alternatives, comparison data, and application guidance into one engineering reference. Use the manufacturer datasheet for the definitive pin description, timing diagrams, electrical limits, and ordering information.
ADS7800KPG4 - 12-Bit 333kSPS SAR ADC, 24-PDIP | Texas Instruments
The Texas Instruments ADS7800KPG4 is a 12-bit, 333 kSPS successive-approximation analog-to-digital converter (SAR ADC) housed in a 24-pin plastic DIP (0.300 inch, 7.62 mm) package. It is specified over the commercial 0°C to +70°C temperature range and operates from a single +5 V supply plus an auxiliary -12 V or -15 V supply. Key specifications include a maximum sampling rate of 333 kSPS (equivalent to a 3 µs conversion time per the datasheet), ±1 LSB linearity (K-grade), and a parallel data interface suitable for direct connection to microprocessors and DSPs. An SAR ADC is a successive-approximation-register analog-to-digital converter, a class of precision data converter that uses a binary-search algorithm against an internal DAC to digitize an input voltage one bit at a time within a fixed conversion window. SAR ADCs occupy the middle of the data-converter hierarchy between flash (fastest, lowest resolution) and sigma-delta (highest resolution, slowest); they deliver a useful blend of speed, resolution, and low latency that makes them ideal for multiplexed data acquisition, industrial control, and instrumentation front-ends. The ADS7800KPG4 features three analog input ranges (0 V to 5 V, 0 V to 10 V, and ±5 V to ±10 V with appropriate scaling), a sample-and-hold on the front end, and an internal +2.5 V reference. An optional external reference may be applied for system calibration. Throughput is rated at 333 k samples per second, enabling the part to digitize signals in audio bandwidth and process-control applications. Typical applications include multichannel data-acquisition systems, industrial process control, precision instrumentation, and digital signal processing front-ends. Designers value the part for its easy microprocessor interface, robust sampling rate, and wide analog input range flexibility. Designers should observe standard SAR ADC practices: drive the analog input with a low-impedance buffer, decouple supplies near the pins, and keep digital returns separate from analog returns.
ADS7800KU/1K - 12-Bit 333kSPS SAR ADC | Texas Instruments
The ADS7800KU/1K is a 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Texas Instruments, offering a sampling rate of 333 kSPS. It features a complete 12-bit ADC with internal sample-and-hold, reference, clock, and a digital interface for microprocessor control, packaged in a 24-pin SOIC. The device operates from a +5V supply and either a -12V or -15V supply, with standard ±10V and ±5V input ranges. An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital numbers, enabling digital processing of real-world signals. The ADS7800 is a SAR-type ADC, which uses a binary search algorithm to determine the digital output, offering a good balance of speed, resolution, and power consumption. SAR ADCs are widely used in data acquisition systems, industrial control, and medical instrumentation where moderate speed and high accuracy are required. Key features of the ADS7800KU/1K include 12-bit resolution, 333k samples per second, standard ±10V and ±5V input ranges, and DC performance suitable for precision applications. The device is available in a 24-pin SOIC package, which is suitable for surface-mount assembly. It operates over the commercial temperature range of 0°C to +70°C, making it suitable for most industrial and consumer applications. The ADS7800 uses state-of-the-art CMOS structures, providing low power consumption and high reliability. It includes an internal sample-and-hold circuit, eliminating the need for external track-and-hold components. The digital interface supports microprocessor control with three-state output drivers, allowing easy connection to digital buses. The device also features a conversion time of 2.7 µs, enabling high-speed data acquisition. Typical applications for the ADS7800KU/1K include industrial control systems, medical instrumentation, and automotive systems requiring precise signal processing. Its high sampling rate and 12-bit resolution make it suitable for applications such as motor control, power monitoring, and data acquisition systems. The device's standard input ranges simplify interface with sensors and transducers. When designing with the ADS7800KU/1K, ensure proper decoupling of the power supplies and reference to achieve optimal performance. The device requires a +5V supply and a negative supply (-12V or -15V), which should be well-regulated and filtered. The analog input should be driven with a low-impedance source to avoid sampling errors.
ADS7804P - 12-Bit 100 kSPS SAR ADC | Texas Instruments
Texas Instruments ADS7804P is a 12-bit, single-input, successive-approximation analog-to-digital converter with a 100 kSPS sampling rate, a 5 V supply, and a 28-pin PDIP package. It is designed for industrial data-acquisition systems that require deterministic conversion timing, a conventional parallel interface, and operation from -40 °C to +85 °C. An ADC is a data-conversion IC that converts an analog voltage into a digital code for processing, measurement, or control. The ADS7804P belongs to the ADC hierarchy: analog-to-digital converter, data-converter IC, and semiconductor. Its successive-approximation architecture compares the input voltage with an internal reference through a series of increasingly precise comparisons, producing a 12-bit result after the specified conversion process. The principal device characteristics are 12-bit resolution, 100 kSPS throughput, one analog input, a 5 V supply, and a 28-pin through-hole PDIP package. The single-input architecture makes the converter suitable for one analog measurement channel, while the 12-bit result provides 4096 digital codes. The device is identified as an industrial-temperature-grade component and is intended for equipment operating across the -40 °C to +85 °C range. The ADS7804P uses a parallel digital interface and a sampling CMOS conversion structure. In a measurement circuit, the analog signal is presented to the input pin, the converter acquires the voltage, and the resulting digital word is made available to the host processor or control logic. The 100 kSPS rate supports process monitoring, instrumentation, industrial control, and embedded measurement systems that do not require high-speed waveform conversion. Because the ADS7804P is specified for a 5 V supply, the system must provide a regulated supply with suitable decoupling close to the device. Input and reference routing should be kept short and protected from noisy power stages. The 28-pin PDIP format is useful for through-hole prototypes, legacy industrial boards, and designs where a socketed or manually assembled implementation is preferred. This page provides a structured product overview, verified specifications, application guidance, design notes, and a comparison framework for engineers evaluating the ADS7804P. Use the manufacturer datasheet for the complete pin description, electrical limits, timing diagrams, reference configuration, and application circuit before releasing a production design.
ADS7804U - 12-Bit 100 kSPS SAR ADC | Texas Instruments
The Texas Instruments ADS7804U is a 12-bit, single-channel successive-approximation analog-to-digital converter with a 10 µs conversion time, 100 kSPS minimum sampling rate, and ±10 V input range in a 28-pin SOIC package. It operates from a single +5 V supply and supports internal or external references, a sample-and-hold amplifier, a clock, and full parallel data output. An ADC is a data-conversion IC that transforms an analog voltage into a digital code for processing, storage, measurement, or control. The ADS7804U belongs to the SAR ADC hierarchy, which successively tests each bit of the result. Compared with flash and sigma-delta converters, a SAR ADC combines a straightforward conversion process, parallel data interface, and deterministic sampling behavior, making it suitable for instrumentation and control systems. Key specifications include 12-bit resolution, 100 kSPS minimum sampling, 72 dB minimum SINAD with a 45 kHz input, and ±0.45 LSB maximum integral nonlinearity. The converter offers no missing codes and uses a full parallel output for direct interface with parallel digital buses or latches. Its specified operating-temperature range is -40 °C to +85 °C, and maximum power dissipation is 100 mW. The ADS7804 is electrically pin-compatible with the 16-bit ADS7805, allowing engineers to reuse a board layout when the required conversion resolution changes. Its ±10 V input capability also permits bipolar analog signals to be measured from a single +5 V supply. The manufacturer datasheet discusses offset and full-scale error adjustment with fixed resistors, along with internal offset and gain adjustment for external trimming. Typical uses include industrial process measurement, laboratory data acquisition, industrial control loops, embedded instrumentation, and digital panel systems. In each case, the 10 µs conversion time permits 100 kSPS sampling, while the 12-bit output provides 4096 digital codes across the ±10 V input range. PCB design should prioritize short, shielded analog-input routing, adequate reference bypassing, and a clean digital return path. Because the ADS7804U uses a parallel interface, its 12 output bits can introduce switching activity next to the analog input, making grounding and component placement important. Designers should also verify supply tolerances and external-reference requirements against the system measurement accuracy. This product page consolidates manufacturer specifications, current distributor pricing, verified drop-in alternatives, and practical engineering guidance. It also distinguishes true pin-compatible replacements from through-hole or function-only alternatives so engineers can make PCB-level decisions without assuming that a similar converter is electrically interchangeable.
ADS7805P - 16-Bit 100 kSPS SAR ADC, +/-10 V Input | Texas Instruments
The Texas Instruments ADS7805P is a 16-bit, 100 kSPS sampling CMOS successive-approximation (SAR) analog-to-digital converter with a +/-10 V analog input range, a full 16-bit parallel data output, and operation from a single +5 V supply, packaged in a 28-pin PDIP. The converter accepts unipolar or bipolar analog signals directly without external front-end scaling, and its 86 dB minimum SINAD with a 20 kHz input supports precision instrumentation measurement. An SAR ADC is a type of analog-to-digital converter that compares the unknown input voltage against a capacitor-based internal DAC during a series of clocked bit trials. The result is a linear regulator hierarchy sibling: ADC sits under data converter, which sits under mixed-signal and analog semiconductors, and then under integrated circuit and semiconductor. Compared with pipeline or delta-sigma converters, the SAR architecture converts one sample per conversion cycle with no pipeline latency, which makes it ideal for multiplexed data-acquisition front ends. Key features include a 100 kHz minimum sampling rate, a 16-bit resolution with no missing codes, +/-3.0 LSB maximum integral nonlinearity, and 16-bit differential nonlinearity. The device uses either an internal reference or an external reference for ratiometric or off-set calibration, and its 16-bit parallel output bus can be read directly by a microprocessor, DSP, or FPGA with three-state drivers for shared-bus designs. The internal architecture is a capacitor-based charge-distributing SAR core with an integrated sample-and-hold, on-chip reference, clock, and microprocessor-compatible interface. Because the sample-and-hold front end is on chip, no external acquisition multiplexer or sample-and-hold amplifier is needed for single-ended or differential measurement, and the converter operates from a single +5 V analog and digital supply, simplifying board partitioning. Typical applications include industrial process control and data acquisition modules, instrumentation and test benches, PLC analog input cards, medical monitoring equipment, audio and speech analysis front ends, and factory automation signal conditioning. The device is pin-compatible with the 12-bit ADS7804, so an existing parallel-bus board can be upgraded to 16-bit resolution in the same footprint and with the same software timing. When designing around the ADS7805P, remember that a single +5 V supply still requires a clean analog ground plane and decoupling close to the supply pins. Because the parallel interface toggles on every conversion, keep the data bus short, use series damping resistors on long traces, and latch or buffer the result in external logic if the bus must cross a board boundary. This page brings together the converter's key electrical characteristics, pin-compatible drop-in alternatives, and applied design guidance that are not consolidated in a single manufacturer document, helping engineers qualify the part quickly for new analog front-end designs.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.