ADC/DAC
제품 (2518)
ADS8380IBRHPRG4 - 18-Bit 600kSPS Serial ADC | Texas Instruments
The Texas Instruments ADS8380IBRHPRG4 is an 18-bit, 600-kSPS successive-approximation-register (SAR) analog-to-digital converter with a single-ended (pseudo-differential) input, an integrated reference, and a high-speed serial interface, housed in a 28-pin VQFN (RHP, 6x6 mm) exposed-pad package. The device delivers ±2 LSB typical linearity and accepts unipolar pseudo-differential analog inputs, making it well suited for high-precision industrial data-acquisition front ends. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a class of data converter that uses a binary search algorithm and a capacitive DAC to digitize an analog input one bit at a time per conversion clock. SAR ADCs offer an excellent balance of resolution, speed, and power consumption versus pipelined or delta-sigma converters, and they require no pipeline latency. In the system hierarchy, a SAR ADC sits between the analog signal-conditioning front end and the digital signal processor or microcontroller in a precision data-acquisition chain. Key features of the ADS8380IBRHPRG4 include a 600 kHz maximum sample rate, an integrated low-drift reference, a CMOS-compatible serial interface capable of up to 40 MHz clock speeds, an operating temperature range of -40C to +85C (industrial grade), and low power consumption typical of micropower SAR architectures. The integrated reference eliminates an external precision reference component, simplifying BOM and reducing PCB area. The pseudo-differential input structure rejects common-mode noise on the input signal when paired with proper driver circuitry. The ADS8380IBRHPRG4 uses a charge-redistribution capacitive DAC architecture with inherent sample-and-hold functionality, providing a true 18-bit resolution at full speed without throughput-dependent latency. The device is characterized for 18-bit no-missing-codes performance across the industrial temperature range, supporting robust operation in factory-floor and instrumentation environments. Typical applications include industrial process-control data acquisition, precision instrumentation and weigh scales, medical patient-monitoring front ends, optical module monitoring, and high-speed multiplexed data-acquisition systems. The integrated reference and small VQFN package also make it attractive for space-constrained designs such as portable test equipment. When designing with this part, ensure the input driver amplifier can settle the ADC's input within the acquisition window, and provide adequate bypass capacitance on AVDD/DVDD rails to achieve the rated SNR. The serial interface timing budget must support the full 40 MHz SCLK without violating the device's t_acq specification. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone.
ADS8380IRHPRG4 - 18-Bit 600kSPS Pseudo-Diff SAR ADC | Texas Instruments
The Texas Instruments ADS8380IRHPRG4 is a high-performance 18-bit, 600-kHz analog-to-digital converter with a pseudo-differential (single-ended) input, housed in a 28-pin VQFN exposed-pad package. The -G4 suffix indicates a tape-and-reel lead-free finish that is RoHS compliant. The device integrates an 18-bit capacitor-based successive-approximation-register (SAR) ADC with inherent sample-and-hold and is specified for industrial temperature operation from -40C to +85C. It targets applications that demand high resolution and low power dissipation in a compact surface-mount footprint. An SAR ADC is a successive-approximation-register analog-to-digital converter. This architecture uses a binary-search algorithm against an internal precision DAC to digitize each sampled input in N conversion clock cycles for N bits of resolution. SAR ADCs are valued for their zero-latency behavior (a conversion result appears on the same cycle the sample is taken), deterministic throughput, and excellent DC accuracy, which makes them a staple for precision industrial, medical, and instrumentation signal chains where multi-MHz pipelined converters would be wasteful. Key features include 600-kSPS throughput, an unipolar pseudo-differential analog input, an internal conversion clock, and a high-speed CMOS serial interface capable of up to 40 MHz SCLK. The straight-binary data format simplifies downstream FPGA or microcontroller decoding, while the 28-VQFN exposed pad lowers thermal resistance for high-temperature-margin industrial designs. The part is micropower relative to its speed class and operates from a single analog supply, simplifying power-tree design. Typical applications include industrial process control, optical-module front ends, multi-channel data-acquisition boards, medical instrumentation, and high-speed precision sensors. The pseudo-differential input accepts a unipolar signal referenced to the converter common-mode, which simplifies input protection and signal conditioning in low-channel-count systems. For multi-channel designs, multiple ADS8380 devices can share a serial bus to scale channel count without expanding the FPGA pin budget. When designing with this device, follow the datasheet's reference-driver and input-filter recommendations to avoid degradation of the ADC's AC performance. Decouple AVDD with a 1uF ceramic plus a 0.1uF high-frequency bypass placed close to the supply pin, and stitch the exposed pad to a continuous ground pour for thermal relief and low-impedance return. The serial-interface timing budget at 40 MHz SCLK should be validated against the host controller's I/O timing to ensure reliable data capture at full 600-kSPS throughput.
ADS8381IBPFBR - 18-Bit 580kHz SAR ADC | 48-TQFP | Texas Instruments
The Texas Instruments ADS8381IBPFBR is an 18-bit, 580-kHz successive-approximation analog-to-digital converter with parallel interface and unipolar input, housed in a 48-pin TQFP (PFB) package measuring 7x7 mm. It delivers 18-bit no-missing-code (NMC) performance guaranteed over the full industrial temperature range, zero pipeline latency typical of SAR architectures, and a low 115 mW power dissipation at the full 580 kHz throughput rate. The unipolar input range combined with an onboard reference buffer and conversion clock simplifies external analog design. A successive-approximation register (SAR) ADC is a type of data converter that performs a binary search through an internal capacitive DAC, producing a digital output in a fixed number of clock cycles with no pipeline delay. SAR ADCs belong to the broader category of Nyquist-rate analog-to-digital converters, which sit at the bottom of the data-converter hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. They are valued for their single-shot accuracy, deterministic latency, and excellent DC linearity compared to delta-sigma or pipeline alternatives. Key features include 580 kHz sample rate, 18-bit NMC ensured over temperature, unipolar analog input, zero latency, internal reference buffer, internal conversion clock, and a wide 2.7V to 5.25V analog supply range. The parallel digital interface provides easy connection to microcontrollers, DSPs, and FPGAs without requiring a high-speed serial clock. Industrial temperature grade (-40C to +85C) and a small 7x7 mm TQFP footprint enable compact designs in dense signal-conditioning boards. Typical applications include medical instruments such as patient monitors and portable diagnostic equipment, optical networking line-side data acquisition, transducer interfaces for bridge and thermocouple front-ends, high-accuracy data acquisition systems, and magnetometer signal chains. The 580 kHz throughput comfortably digitizes multi-kHz bandwidth signals at 18-bit precision, while the 115 mW dissipation allows fan-less operation in sealed enclosures. When designing with this device, drive the analog input with a low-impedance, wide-bandwidth op-amp buffer such as the OPA227 or THS4631 to preserve linearity at the ADC's full-scale settling time. Provide a clean low-noise analog supply and decouple both AVDD and DVDD with 10uF bulk plus 0.1uF ceramic capacitors placed within 5 mm of the supply pins.
ADS8381IPFBRG4 - 18-Bit 580kHz SAR ADC, 48-TQFP | Texas Instruments
The Texas Instruments ADS8381IPFBRG4 is an 18-bit, 580 kSPS, unipolar-input, micropower successive-approximation analog-to-digital converter with a high-speed parallel interface, packaged in a 48-pin TQFP (PFB, 7x7 mm). It supports a single 5 V analog supply, an industrial temperature range of -40C to +85C, and features fully-differential pseudo-bipolar inputs that simplify front-end signal conditioning for unipolar sensor and instrumentation signals. What is a SAR ADC? A Successive Approximation Register analog-to-digital converter is a precision data-conversion architecture that resolves an analog input against an internal DAC using a binary search, producing one conversion per N clock cycles for N bits of resolution. SAR ADCs combine high resolution (typically 12-20 bits), deterministic low-latency conversion, and excellent DC accuracy, making them a cornerstone of the data-acquisition IC family alongside delta-sigma, pipeline, and flash architectures. They sit inside the broader category of data acquisition -> analog-to-digital converters -> precision converters -> signal chain ICs. Key features of the ADS8381 include 18-bit no-missing-codes performance, an internal reference, and a high-speed parallel output bus that streams conversion results directly to an FPGA, DSP, or microcontroller without requiring serialization. The device also integrates an input sample-and-hold, a flexible clock input, and hardware-friendly reset and conversion-start controls. From an architectural standpoint, the ADS8381 uses a charge-redistribution SAR core with internal input termination and a precision thin-film resistor network for the DAC, achieving low integral nonlinearity and low gain drift across temperature. The micropower design keeps total power consumption modest even at the full 580 kSPS throughput, and the parallel interface removes the overhead of bit-banging or clocking a serial converter from a host processor. Typical applications include industrial process control, multichannel data acquisition systems, medical instrumentation, optical sensor front ends, and portable or battery-powered measurement equipment that need 16-18 bit dynamic range without the latency or clocking complexity of a sigma-delta converter. When designing with this part, place a low-impedance 0.1 uF bypass ceramic close to the analog supply pin and provide a small RC anti-alias filter ahead of each input to limit out-of-band noise that would otherwise fold into the conversion band. This page synthesizes distributor pricing, drop-in package alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the ADS8381IPFBRG4 against current SAR ADC options on the market.
ADS8382IRHPR - 18-bit 600kSPS SAR ADC | Texas Instruments
The Texas Instruments ADS8382IRHPR is an 18-bit, 600-kSPS successive-approximation-register (SAR) analog-to-digital converter with a fully differential pseudo-bipolar input, integrated sample-and-hold, and a high-speed CMOS serial interface capable of up to 40 MHz SCLK. It is housed in a 28-pin QFN (RHP) package, 6x6 mm, with an exposed thermal pad, and operates over the industrial -40C to +85C temperature range from a single 5-V analog supply. A SAR ADC is a precision data converter that uses a charge-redistribution capacitor array and a successive-approximation algorithm to digitize an analog input one bit per clock cycle. SAR converters sit within the broader taxonomy of analog-to-digital converters -> data converters -> signal-chain ICs -> mixed-signal ICs -> semiconductors. The pseudo-bipolar, fully differential input topology of the ADS8382 allows direct digitization of signals that swing around a common-mode voltage, which is useful for industrial sensors and instrumentation front-ends. Key headline specifications include 18-bit resolution, 600 kSPS sample rate, 1.16 microsecond conversion time, and 0.0019 percent integral nonlinearity (INL). The device supports both external and internal voltage references and provides a serial interface that simplifies board routing. Its micropower architecture balances throughput with low power dissipation, making it appropriate for multi-channel data-acquisition systems where channel density and thermal budget matter. The internal architecture is a capacitor-based SAR core with inherent track-and-hold, followed by a digital correction engine that achieves the specified linearity. The high-speed CMOS serial interface reduces pin count compared with parallel-output ADCs of the same speed class, leaving more board real-estate for analog front-end conditioning. The RHP-28 6x6 mm QFN package has a low thermal resistance suitable for the power level of a 600 kSPS SAR. Typical applications include industrial process control, multichannel data-acquisition boards, medical instrumentation such as patient monitors, optical sensor front-ends, and precision weigh scales. The serial interface is also convenient for isolated data-acquisition designs where galvanic isolation favors fewer digital traces. When designing with the ADS8382IRHPR, place the 0.1 microfar decoupling capacitor as close as possible to the AVDD pin and respect the reference decoupling topology recommended in the manufacturer datasheet. Designers should also consider using the ADS8382IRHPT (tape-and-reel variant) and ADS8382IBRHPR (extended temperature grade) as drop-in alternates within the same footprint. This page synthesizes distributor pricing, drop-in alternates, and practical design notes not found in the manufacturer datasheet alone.
ADS8382IRHPRG4 - 18-Bit 600kSPS Serial ADC, 28-VQFN | Texas Instruments
The Texas Instruments ADS8382IRHPRG4 is an 18-bit, 600-kSPS successive-approximation analog-to-digital converter with a fully differential pseudo-bipolar input, an integrated voltage reference, and a high-speed CMOS serial interface, housed in a 28-pin VQFN (RHP) exposed-pad package. Operating from -40C to 85C industrial temperature range, the device combines a 1.16 us conversion time with an 18-bit capacitor-based SAR architecture and inherent sample-and-hold, delivering 0.0019% linearity error performance for precision data acquisition. An SAR (Successive Approximation Register) ADC is a medium-to-high resolution converter that uses an internal capacitive DAC and comparator to successively narrow a digital approximation of the analog input, one bit at a time per clock cycle. SAR ADCs occupy the middle of the converter hierarchy - faster than delta-sigma ADCs but typically lower in resolution - and sit within the broader category of data converters, which bridge the analog and digital domains in mixed-signal systems. The ADS8382 specifically targets applications requiring single-shot precision at sub-MHz sampling rates without the latency of oversampling converters. Key features of the ADS8382IRHPRG4 include 600-kSPS throughput with serial data interface clock speeds up to 40 MHz, an integrated low-drift reference, pseudo-bipolar fully differential input supporting +/-Vref input range, low power consumption suitable for battery-powered and portable instrumentation, and a 28-VQFN exposed-pad package providing low thermal resistance for reliable industrial-grade operation. The CMOS serial interface simplifies board routing and reduces pin count compared to parallel-output ADCs in the same resolution class. The converter uses a charge-redistribution SAR architecture with an input sample-and-hold that supports fast acquisition of rapidly changing signals. The integrated reference reduces external BOM count, while the pseudo-bipolar input accommodates signals that swing around a common-mode voltage rather than ground-referenced single-ended signals. Typical applications include industrial process control loop measurement, precision weigh scales and load cell signal chains, medical patient monitoring instrumentation, optical sensor front-ends, and portable data loggers where 18-bit resolution and 600 kSPS throughput are simultaneously required. When designing with the ADS8382IRHPRG4, ensure the VQFN exposed pad is soldered to a sufficient ground copper pour to meet the 31 C/W thermal resistance specification, and place the internal reference bypass capacitor as recommended in the manufacturer datasheet. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
ADS8383IBPFBR - 18-Bit 500kHz SAR ADC | Texas Instruments
The Texas Instruments ADS8383IBPFBR is an 18-bit, 500-kHz, unipolar input, micropower sampling analog-to-digital converter with parallel interface, housed in a 48-pin TQFP (7x7 mm) package. It features one pseudo-bipolar (unipolar, fully-differential) input channel and provides 18-bit no-missing-code (NMC) performance ensured over the full industrial temperature range, with zero pipeline latency thanks to its successive-approximation-register (SAR) architecture. An SAR ADC is a successive-approximation-register analog-to-digital converter: a sampled analog input is compared against an internal binary-weighted capacitor DAC one bit per clock cycle, producing N-bit digital output in N conversion cycles with no latency between sample and result. Within the data-converter hierarchy, the ADS8383 belongs to the SAR ADC sub-family of precision ADCs (sibling to delta-sigma and pipeline ADCs) and is used in the data-acquisition signal chain alongside amplifiers, references, and digital isolators. Key features include a 500 kHz sample rate, 18-bit NMC guarantee, very low power dissipation, an internal or external reference option, and a flexible 8/16/18-bit parallel host interface. The 48-TQFP (PFB) package is footprint-compatible with the broader TI ADS838x family, enabling a single PCB layout to support multiple resolution/speed options. Typical applications include industrial process control, medical instrumentation, optical networking gain/digitization, and high-speed data-acquisition front ends. The wide input range and high DC accuracy also make it suitable for precision weigh scales, vibration analysis, and laboratory instrumentation. When designing with this device, the reference voltage (REFP/REFM) bypass network and the analog input RC network must be carefully placed to preserve AC performance. For best linearity, drive the +IN and -IN pins with a low-impedance, bandwidth-limited amplifier such as the THS4631 or OPA227, and use a single-point ground at the ADC analog ground pin. This page synthesizes distributor pricing, drop-in alternatives (ADS8383IBPFBT, ADS8383IBPFBRG4, ADS8383IBPFBTG4), and practical design notes that complement the manufacturer datasheet.
ADS8383IBPFBRG4 - 18-bit 500kSPS Parallel SAR ADC | TI
The Texas Instruments ADS8383IBPFBRG4 is an 18-bit, 500 kSPS successive-approximation register (SAR) analog-to-digital converter with a parallel output interface, supplied in a 48-pin TQFP (7x7 mm) package. The ADC provides a unipolar input range, true 18-bit no-missing-code performance over the industrial -40C to +85C range, and zero conversion latency, making it well suited for high-precision data-acquisition front-ends. Integrated sample-and-hold input circuitry, an internal reference, and a flexible 18-/16-/8-bit bus mode simplify host-side data retrieval. Typical full-scale input is 0V to VREF (with VREF externally driven up to 4.096V typical) and conversion time is approximately 1.52 us at the maximum 500 kHz throughput. The SAR architecture delivers zero pipeline delay, which is critical for multiplexed control loops and event-triggered sampling. The device operates from a single +5V analog supply and a separate +5V/+3.3V digital I/O supply, with internal I/O level translation; the digital I/O rail drives the parallel output bus directly to 3.3V logic. According to the manufacturer datasheet, the part dissipates roughly 110 mW at 500 kSPS and scales downward at lower sampling rates to extend battery life in portable instrumentation. Texas Instruments specifies ±1 LSB INL (typical) and >90 dB SNR with a 100 kHz sine input, providing the dynamic range needed for precision measurement, vibration analysis, and medical imaging front-ends. The 48-TQFP footprint supports standard surface-mount assembly and exposed-pad thermal dissipation for high-density layouts. This page synthesizes distributor pricing, drop-in alternatives and practical design notes for engineers evaluating the ADS8383 family for new designs or replacement of legacy 18-bit SAR converters.
ADS8383IPFBRG4 - 18-Bit 500kHz Parallel SAR ADC | Texas Instruments
The Texas Instruments ADS8383IPFBRG4 is an 18-bit, 500 kHz successive-approximation (SAR) analog-to-digital converter with a unipolar input range, housed in a 48-pin TQFP (7x7 mm) package. The device includes an 18-bit capacitor-based SAR A/D converter with an inherent sample-and-hold front end, supports a parallel digital interface with configurable 18-bit, 16-bit (two read cycles), or 8-bit (three read cycles) bus widths, and converts in approximately 1.52 us per sample. Operating from a 5 V analog supply and a 2.7 V to 5.25 V digital supply, the ADS8383 achieves excellent AC and DC performance while consuming only modest power. An SAR ADC is a successive-approximation-register analog-to-digital converter that uses a comparator, an internal DAC, and a successive-approximation register to perform a binary search across the analog input on each conversion cycle. SAR ADCs are valued for low-latency deterministic conversion, excellent DC accuracy, and superior dynamic performance compared to many delta-sigma converters of similar speed, making them the converter of choice for multiplexed data-acquisition systems, instrumentation, and control loops. The ADS8383 belongs to the broader data-converter IC family within TI's precision-mixed-signal portfolio, sitting alongside pipeline and delta-sigma converters in the signal-chain hierarchy. Key features include 18-bit resolution with no missing codes, a true bipolar or unipolar differential input option, a hardware-friendly conversion-start (CONVST) pin, a busy/end-of-conversion indicator, a programmable reference, low-power dissipation, and a -40C to +85C industrial operating range. The wide parallel interface allows direct connection to microcontrollers, FPGAs, and DSPs with 8, 16, or 32-bit data buses, eliminating the need for an external serializer and minimizing glue logic. The architecture combines an input sample-and-hold, an internal conversion clock, calibration logic, and a flexible digital interface to produce low-noise, low-distortion conversions at 500 kSPS. Designers can disable unused sections to reduce power, and the device supports both unipolar (0 V to VREF) and true-bipolar (+/-VREF) input configurations for maximum signal-chain flexibility. Typical applications include industrial process control, multi-channel data-acquisition systems, medical instrumentation, optical networking modules, vibration and acoustic analysis, and precision sensor front ends. The 500 kSPS throughput and 18-bit noise floor suit it well for closed-loop servo control and high-accuracy measurement front-ends. When designing with the ADS8383, allocate separate analog and digital ground planes joined at a single star point near the IC, decouple both AVDD and DVDD with low-ESR ceramic capacitors placed within 3 mm of each supply pin, and provide a low-impedance low-noise external reference (such as the REF5050) for best linearity. This page aggregates parametric data from the manufacturer datasheet, current distributor inventory, and cross-reference alternatives - giving engineers a more complete procurement and design picture than the bare datasheet alone.
ADS8383IPFBTG4 - 18-Bit 500kHz SAR ADC, 48-TQFP | Texas Instruments
The Texas Instruments ADS8383IPFBTG4 is an 18-bit, 500 kHz successive-approximation (SAR) analog-to-digital converter (ADC) with a unipolar input, integrated sample-and-hold, and a parallel digital interface, housed in a 48-pin TQFP (PFB) package. The device operates from a single +5 V analog supply, supports a true 0 V to +VREF analog input range, and is specified over the industrial -40C to +85C temperature range. A SAR ADC is a precision data converter architecture that uses a binary-search algorithm across an internal capacitor DAC to resolve each conversion in a fixed number of clock cycles. Compared with delta-sigma and pipeline ADCs, SAR converters offer deterministic latency and excellent linearity at moderate sample rates, making them the preferred choice for multiplexed data-acquisition systems, industrial process control, and instrumentation front-ends where repeatable per-sample timing matters more than the highest possible throughput. Key specifications include 18-bit no-missing-codes resolution, 500 kSPS maximum throughput, an 18-/16-/8-bit selectable parallel interface, and a true bipolar-capable pseudo-bipolar input stage when driven with a VREF-centered input. The device features a high-impedance CMOS input structure with 4.5 ns aperture delay and excellent common-mode rejection, allowing direct connection to high-impedance sensors and instrumentation amplifiers. The internal sample-and-hold accepts fast-slewing transients, simplifying front-end design. Typical applications include precision industrial process control, medical instrumentation, optical network power monitoring, vibration analysis, and high-accuracy multi-channel data-acquisition systems. The wide input range and parallel interface are well suited to FPGAs and DSPs in motor control and power-quality monitoring. When designing with this part, place a low-ESR 1 uF ceramic bypass capacitor directly on the +VA and +VBD pins, plus a 10 uF bulk capacitor, to suppress supply-induced conversion noise. Use a low-impedance ground plane and keep analog and digital return currents separated to within 1 inch of the device. This page synthesizes distributor pricing, drop-in alternatives, application notes, and PCB design guidance not found in a single source on DigiKey, Mouser, or the TI product folder.
ADS8401IBPFBR - 16-Bit 1.25MSPS SAR ADC w/ Ref | Texas Instruments
The Texas Instruments ADS8401IBPFBR is a 16-bit, 1.25 MSPS successive-approximation-register (SAR) analog-to-digital converter (ADC) with an internal reference and parallel interface, housed in a 48-pin TQFP (PFB) package measuring 7x7 mm. According to the manufacturer datasheet, the device accepts a unipolar analog input range of 0 V to VREF (with VREF set by the integrated 4.096 V reference) and delivers 16-bit parallel data on a single conversion cycle, making it well suited to high-speed industrial data acquisition. A SAR ADC is a type of data converter that uses a binary-search algorithm against an internal capacitive DAC to digitize an analog input in a fixed number of clock cycles. SAR ADCs sit within the broader hierarchy of analog-to-digital converters, between flash converters (fastest, lowest resolution) and sigma-delta converters (highest resolution, lowest bandwidth). Because SAR ADCs offer deterministic latency, no pipeline delay, and excellent AC/DC accuracy at medium speeds, they are preferred for multiplexed multi-channel systems, motor control, and precision instrumentation where single-shot accuracy matters more than continuous streaming throughput. Key features of the ADS8401 include 1.25 MSPS sampling rate, internal low-drift 4.096 V reference, 16-bit parallel (unipolar) interface, single 5 V analog supply, low power consumption (approximately 110 mW typical at 1.25 MSPS), and -40 C to +85 C industrial operating range. The internal reference eliminates the need for an external reference IC, reducing BOM count and PCB area. The PFB-48 package provides a 7x7 mm footprint with industry-standard 0.5 mm lead pitch for surface-mount assembly. The architecture combines a high-bandwidth input sample-and-hold, a precision 16-bit charge-redistribution DAC, and a low-noise internal reference buffered for low-impedance drive. The internal reference achieves low drift, supporting 16-bit integral nonlinearity (INL) and differential nonlinearity (DNL) without external calibration. Conversion is initiated on the falling edge of CONVST, and data is latched into the output bus after a deterministic number of clock cycles, simplifying FPGA/CPLP interface timing. Typical applications include industrial process control, multichannel data acquisition systems (DAQ), optical encoders and position feedback loops, medical instrumentation, vibration analysis, and power-line monitoring. The 1.25 MSPS throughput supports per-channel sampling in multiplexed 4- to 8-channel systems running at 100 kSPS to 300 kSPS per channel. The integrated reference is particularly attractive when board space and BOM simplicity are priorities. When designing with the ADS8401, ensure the analog input signal is fully settled within the 320 ns acquisition window. Use a low-impedance input buffer (such as the OPA227 or THS4031) to drive the ADC input, and decouple the AVDD pin with a 10 uF tantalum and 0.1 uF ceramic capacitor combination placed as close to the pin as possible. Avoid routing digital output bus traces beneath the analog input pin to minimize digital-to-analog coupling. This page synthesizes distributor inventory, drop-in alternative cross-references, and practical design notes not found in the manufacturer datasheet alone. Pin-compatible alternates are listed by same-brand first, then cross-brand, with parametric proximity scoring. All alternatives share the 48-TQFP (PFB) footprint.
ADS8401IBPFBT - 16-Bit 1.25MSPS SAR ADC w/ Internal Ref | TI
The Texas Instruments ADS8401IBPFBT is a 16-bit, 1.25 MSPS successive-approximation (SAR) analog-to-digital converter (ADC) featuring an internal 4.096 V reference, integrated sample-and-hold, and a parallel digital interface, housed in a 48-pin TQFP (7x7 mm) package. It accepts a unipolar single-ended analog input and operates from a single +5 V analog supply, producing 16-bit straight-binary or 8-bit-bus results at full throughput. A SAR ADC is a type of data converter that performs a binary search through an internal precision capacitor DAC array to digitize an input voltage in a single conversion cycle. SAR ADCs occupy the middle ground between ultra-fast flash converters and high-precision delta-sigma converters, combining low latency (single-cycle latency), deterministic throughput, and excellent DC accuracy with moderate sampling rates typically in the kSPS-to-low-Msps range. They belong to the broader family of Nyquist-rate data converters within the signal-chain IC hierarchy. Key features of the ADS8401IBPFBT include the internal low-drift 4.096 V reference (eliminating the need for an external ADR/CMP-Ref and saving board area), ±0.5 LSB typical INL/DNL at 16 bits, a spurious-free dynamic range of approximately 92 dB, a bipolar/unipolar analog input range configured via PGA stage, and flexible digital output: a full 16-bit parallel bus OR two 8-bit read cycles for glue-less 8-bit µC/DSP connection. The device architecture combines a precision charge-redistribution capacitor DAC with a high-speed comparator and successive-approximation register logic, sampled at the input through a fast CMOS switch. The internal reference uses a buried-zener topology to achieve low temperature drift (8 ppm/°C typical) and low noise. Typical applications include industrial process control and multi-axis servo position feedback, optical-network power monitoring in telecom line cards, medical imaging front-ends, automotive sensor signal acquisition (with the I-grade temperature rating covering −40°C to +85°C), and high-accuracy data-acquisition cards for instrumentation. Design consideration: place the 10 µF input bypass and 47 µF reference bypass capacitors as close to the AVDD and REFIN/REFOUT pins as possible, maintain a single-point analog/digital ground return under pin 31, and budget for ~110 mW power dissipation at full 1.25 MSPS throughput. This page synthesizes distributor pricing, parametric drop-in alternatives, and PCB-layout design notes compiled from the Texas Instruments datasheet and authorized distributors, providing cross-reference value beyond any single source.
ADS8401IBPFBTG4 - 16-Bit 1.25MSPS SAR ADC w/ Ref | TI
The Texas Instruments ADS8401IBPFBTG4 is a 16-bit, 1.25 MSPS, unipolar-input, micropower successive-approximation-register (SAR) analog-to-digital converter with an integrated reference and parallel interface, housed in a 48-pin TQFP (7x7 mm) package. It provides a single analog input channel and is specified for industrial-grade (-40C to +85C) operating temperatures, making it suitable for data acquisition systems requiring high accuracy and moderate throughput. A SAR ADC is a type of data converter that performs a binary search through the analog input range using an internal capacitor array and comparator, producing one bit per clock cycle. Unlike pipeline ADCs that use multi-stage gain and error-correction blocks, SAR architectures combine inherent sample-and-hold behavior with deterministic latency, making them ideal for multiplexed channel sampling and control-loop applications. SAR converters sit within the broader data-converter hierarchy as: ADC -> Nyquist-rate ADC -> SAR ADC -> precision data converter -> signal-chain IC. Integrating the reference on-die eliminates the external reference design, board area, and drift normally associated with standalone references. Key features of the ADS8401 include 1.25 MSPS throughput, true 16-bit no-missing-codes performance, integrated low-drift reference, low power consumption suitable for battery-powered and industrial systems, and a high-speed parallel interface for direct connection to microcontrollers, DSPs, or FPGAs. The device operates from a single 5 V analog supply and a separate 3 V to 5 V digital supply, providing flexibility for mixed-voltage systems. The integrated reference simplifies design-in and reduces BOM cost compared to discrete-reference solutions. The architecture uses a charge-redistribution DAC array and on-chip sample-and-hold, achieving low aperture delay and predictable latency equal to one conversion cycle. The parallel interface supports byte-wide or 16-bit-wide reads, simplifying data capture without requiring a high-speed serial clock generator. Industrial-grade temperature compliance (A-version die) supports process-control and instrumentation environments. Typical applications include industrial process control, multichannel data acquisition systems, precision instrumentation, portable battery-powered measurement equipment, optical network monitoring, and medical instrumentation front-ends. The combination of 1.25 MSPS throughput and integrated reference suits applications that require good DC accuracy and reasonable dynamic performance without external reference design. When designing with this device, ensure the analog and digital supplies are properly decoupled with 1 uF and 0.1 uF ceramic capacitors placed close to the respective supply pins. Maintain a clean analog ground plane separated from digital return currents to avoid coupling noise into the reference and comparator. The integrated reference requires adequate bypass capacitance as specified in the manufacturer datasheet to achieve datasheet-grade performance. This page consolidates distributor pricing for the ADS8401IBPFBTG4, identifies true drop-in alternatives in the same 48-pin TQFP footprint, and provides practical PCB layout, decoupling, and selection notes not found in the bare datasheet summary.
ADS8401IPFBRG4 - 16-Bit 1.25MSPS SAR ADC with Reference | TI
The Texas Instruments ADS8401IPFBRG4 is a 16-bit, 1.25 MSPS successive-approximation analog-to-digital converter with an internal reference, packaged in a 48-pin TQFP (PFB) with green (Pb-free) leads and reel-packaging. It features a unipolar pseudo-differential input, parallel output interface, and 3V/5V digital supply compatibility with a 5V analog supply. According to the manufacturer, the converter uses a charge-redistribution SAR architecture with an inherent sample-and-hold and delivers genuine 16-bit performance with no missing codes. A successive-approximation register (SAR) ADC is a converter type that uses a binary-search algorithm and a charge-redistribution capacitor DAC to digitize an analog input one bit per clock cycle. SAR ADCs occupy the middle of the converter taxonomy between flash ADCs (fastest, lowest resolution) and sigma-delta ADCs (slowest, highest resolution); they offer an excellent balance of speed (up to several MSPS) and resolution (12-18 bits) without requiring a steep input anti-alias filter, making them preferred in multiplexed data-acquisition systems, industrial control loops, and precision instrumentation. Key features of the ADS8401 include a 1.25 MSPS sampling rate, 16-bit resolution with no missing codes, an internal reference (typ. 4.096 V), 0.61 µs conversion time, low power dissipation (~115 mW at 1.25 MSPS), and a 3-state parallel output bus. A power-down pin reduces dissipation to 15 mW in idle; full-scale input range is 0 V to +VREF (unipolar) or ±VREF (pseudo-bipolar when using the dedicated bipolar input pin). The architecture combines a precision bandgap reference, a high-speed comparator, and a switched-capacitor DAC. Input is acquired during the acquisition window and converted over 16 internal clock cycles; data is latched onto the parallel bus and flagged by the BUSY pin going low, enabling straightforward connection to microprocessors, FPGAs, and DSPs. Typical applications include industrial process control, medical instrumentation, multi-channel data-acquisition systems, optical networking gain control, test equipment, and precision sensor digitizing. When designing with this part, place the 0.1 µF bypass capacitors as close as possible to AVDD and DVDD pins, and respect the antialias filter bandwidth at the input. The internal reference decouples the design from external references but limits unipolar input range to 0-4.096 V. This page synthesizes distributor pricing, parametric drop-in alternatives, and design notes not duplicated on the manufacturer datasheet.
ADS8401IPFBTG4 - 16-Bit 1.25MSPS Parallel ADC w/Ref | TI
The Texas Instruments ADS8401IPFBTG4 is a 16-bit, 1.25 MSPS successive-approximation analog-to-digital converter (SAR ADC) with an integrated reference and a parallel interface, housed in a 48-pin TQFP (PFB) powerPAD package. It operates from a single +5 V analog supply, with a separate +5 V (or 3 V compatible) digital interface supply, and accepts a unipolar 0 V to +VA (or ±VA with bipolar mode) analog input range. According to TI datasheet SBAS222, the converter uses an advanced SAR architecture with an internal reference and delivers ±0.5 LSB typical INL/DNL. A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that uses a binary-search algorithm, switching an internal capacitor array one bit per clock cycle, to convert an analog input to a digital code in N clock cycles for an N-bit result. SAR ADCs combine high accuracy (typically 14–18 bits) with low latency and modest power, sitting within the hierarchy of ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. The ADS8401IPFBTG4 specifically targets high-accuracy, single-shot or burst-mode sampling where CMOS/TTL bus parallelism is preferred over serial LVDS. Key features include 1.25 MSPS throughput, true 16-bit no-missing-codes performance, internal 2.5 V low-drift reference, ±10 V (with external bias) or 0–4 V (unipolar) input ranges, a high-speed parallel interface, and an industrial –40°C to +85°C operating range. The integrated reference eliminates an external reference component and reduces board area. Power dissipation is approximately 155 mW at full throughput and drops below 1 mW in NAP/PD power-down modes, making the part suitable for low-duty-cycle multiplexing architectures. Typical applications include data acquisition (DAQ) front-ends, instrumentation, optical-network control loops, industrial process control, and medical imaging front-ends. The wide input range and internal reference make drop-in adoption straightforward for replacing discrete ADC + external reference designs. When designing with this part, place the supply decoupling capacitors (10 µF tantalum + 0.1 µF ceramic on each +VA pin) within 5 mm of the pins, and keep the analog input trace short and guarded. Use the internal reference decoupling pin (REFcap) per datasheet layout guidelines to preserve INL/DNL performance. The powerPAD thermal pad must be soldered to a grounded copper pour to meet the 48-TQFP power dissipation rating. This page synthesizes distributor pricing, drop-in same-package alternatives (including the ADS8411 2 MSPS upgrade), parametric comparison with the ADS8383 1 MSPS sibling, and practical design notes that extend beyond the manufacturer datasheet.
ADS8402IBPFBRG4 - 16-bit 1.25MSPS ADC w/Ref TQFP-48 | TI
The Texas Instruments ADS8402IBPFBRG4 is a 16-bit, 1.25 MSPS, pseudo-bipolar fully-differential-input, micropower sampling analog-to-digital converter (ADC) with an internal 4.096 V reference, packaged in a 48-pin TQFP (PFB) with exposed thermal pad. The device accepts unipolar differential analog inputs over a wide common-mode range and delivers data through a high-speed parallel interface, targeting precision data-acquisition systems that need both speed and resolution. Key specifications include 16-bit resolution with no missing codes, 1.25 MSPS maximum throughput, an internal low-drift 4.096 V reference, and true-differential pseudo-bipolar inputs. Compared with older single-ended successive-approximation ADCs, the ADS8402's fully-differential input stage suppresses common-mode noise from motor, sensor, or power-line sources, while the internal reference eliminates an external reference-IC cost and layout area. Architecture-wise the converter uses a successive-approximation register (SAR) core with an internal sample-and-hold and an on-chip 4.096 V bandgap reference. The reference can be driven externally for ratiometric operation. The ADS8402 communicates over a CMOS-compatible 16-bit or byte-wide parallel bus, with separate /CS and /RD strobes for direct connection to microcontrollers, DSPs, and FPGAs without glue logic. Typical applications include industrial process control, weigh scales and load-cell digitizers, medical instrumentation, multi-axis motor-position feedback, optical sensor front-ends, and automatic test equipment (ATE). The wide input common-mode range plus the internal reference make it well-suited to bridge-sensor signal chains where 24-bit dynamic range is not required but 16-bit accuracy and high throughput are essential. For layout, treat the analog and digital grounds as a single low-impedance plane connected under the exposed pad of the TQFP-48. Use a 10 uF plus 0.1 uF bypass pair on AVDD and drive the inputs with low-impedance op-amp buffers (e.g., OPA2277 or THS4631) to preserve AC performance. This page synthesizes distributor stock and pricing, drop-in pin-compatible alternatives, and practical layout notes beyond what the bare manufacturer datasheet provides.
ADS8402IPFBR - 16-Bit 1.25MSPS Pseudo-Bipolar Parallel ADC | Texas Instruments
The Texas Instruments ADS8402IPFBR is a 16-bit, 1.25 MSPS, unipolar differential input, micropower sampling analog-to-digital converter (ADC) with parallel output and an integrated reference, housed in a 48-pin TQFP (PFB) package. It features a successive-approximation-register (SAR) architecture, 86 dB SNR, and -84 dB THD at 100 kHz input, and supports a unipolar pseudo-bipolar differential input range of 0V to +REF or +REF/2 through internal switching. An SAR ADC is a successive-approximation-register analog-to-digital converter that uses a binary search algorithm through an internal capacitive DAC to digitize an analog input in N clock cycles for N-bit resolution. SAR ADCs combine low latency, deterministic behavior, and excellent DC accuracy, and are widely used in industrial control loops, precision instrumentation, and data-acquisition systems where the ADC sits one level below precision amplifiers, isolation, and analog front-ends, and one level above microcontrollers, FPGAs, or DSPs that process the digital samples. Key features of the ADS8402IPFBR include a wide ±10V (true bipolar) input range variant option, single +5V analog supply operation, internal 4.495V reference with optional external reference override, hardware/software configurable analog input range (0V–REF, 0V–2xREF, ±REF, ±2xREF), and a parallel 16-bit/8-bit bus interface. Power dissipation is typically 155 mW at 1.25 MSPS, with scalable power-down modes for low-duty-cycle acquisition. The 48-pin TQFP package supports industrial -40°C to +85°C operation and is pin-compatible with the wider ADS840x/ADS841x/ADS838x family. Typical applications include industrial process control, multi-channel data-acquisition systems (DAQ), precision instrumentation, optical networking gain control loops, and medical imaging front-ends. The integrated reference and parallel interface simplify board design and reduce BOM cost compared to discrete ADC plus external reference solutions. When designing with the ADS8402IPFBR, ensure the analog input common-mode voltage remains within the specified input range for the selected configuration, and decouple AVDD and DVDD with separate 1 µF ceramic and 10 µF bulk capacitors placed close to the pins. The device requires a clean, low-impedance reference decoupling scheme to achieve full 16-bit performance. This page synthesizes distributor pricing as of 2026-10-13, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a one-stop reference for sourcing and designing with this part.
ADS8402IPFBRG4 - 16-Bit 1.25MSPS Parallel ADC w/Ref | TI
The Texas Instruments ADS8402IPFBRG4 is a 16-bit, 1.25 MSPS successive-approximation analog-to-digital converter with an integrated reference and parallel interface, housed in a 48-pin TQFP (PFB) package rated for the industrial temperature range. Key headline specifications per the TI datasheet include 16-bit resolution, 1.25 MHz sample rate, ±1.5 LSB INL (typical) and a 2.95V to 5.25V digital supply with a 5 V analog supply. The unipolar differential input architecture simplifies front-end signal conditioning in single-supply designs. An SAR ADC (Successive Approximation Register analog-to-digital converter) is a sampling data converter that resolves one bit per internal clock cycle using a binary search across an internal capacitive DAC. SAR ADCs sit in the converter hierarchy as follows: ADC -> data converter -> data acquisition IC -> signal chain IC -> semiconductor. Compared with delta-sigma ADCs, SAR parts offer deterministic latency and excellent dynamic performance at low-to-medium resolutions, making them a strong fit for multiplexed data-acquisition systems and instrumentation. Key features include on-chip 4.096 V reference, pseudo-bipolar fully-differential input range, low power dissipation, parallel 8/16-bit bus interface and an industrial –40 °C to +85 °C operating range. The integrated reference eliminates an external component and reduces BOM cost, while the parallel interface supports easy hook-up to microcontrollers, DSPs and FPGAs without serializer overhead. The device uses a charge-redistribution SAR architecture with input sample-and-hold and an internal 4.096 V bandgap reference. The unipolar differential input accepts a true-differential or pseudo-differential signal, which improves common-mode noise rejection in industrial environments where ground loops and motor noise couple into long sensor cables. Typical applications include industrial process control, multi-channel data acquisition systems, optical encoders, portable instrumentation, and medical monitoring. The combination of 16-bit resolution and 1.25 MSPS makes the ADS8402 well suited for digitizing signals from strain-gauge bridges, photodiode arrays and accelerometer outputs. When designing with the ADS8402, ensure the analog input is properly buffered and the analog/digital grounds are partitioned correctly. The internal reference requires an external decoupling capacitor — refer to the datasheet for the recommended value and the analog supply bypass network. This page synthesizes distributor pricing, drop-in same-package alternatives, comparison data and practical design notes not found in the manufacturer datasheet alone, helping engineers shortlist pin-compatible SAR ADCs and accelerate their design-in decision.
ADS8402IPFBTG4 - 16-Bit 1.25MSPS Parallel ADC | Texas Instruments
The Texas Instruments ADS8402IPFBTG4 is a 16-bit, 1.25 MSPS successive-approximation analog-to-digital converter with a pseudo-bipolar fully differential input, integrated reference, and parallel interface, housed in a 48-pin TQFP (PFB) package. It combines a high-speed ADC core, an internal bandgap reference, and a low-power analog front end designed for industrial-grade instrumentation. The device operates from a single +5 V analog supply and a +5 V digital supply with separate AVDD/DVDD pins, simplifying mixed-signal PCB partitioning. An ADC (Analog-to-Digital Converter) is a data conversion integrated circuit that samples continuous analog signals and quantizes them into discrete digital codes. Successive-approximation register (SAR) ADCs like the ADS8402IPFBTG4 use a binary-search algorithm through an internal DAC to converge on the input voltage one bit per clock cycle, providing deterministic latency and excellent noise performance at mid-to-high sampling rates. SAR ADCs sit within the hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor, and serve as the bridge between analog sensors/signals and digital processors (DSPs, FPGAs, microcontrollers). Key features of the ADS8402IPFBTG4 include 1.25 MSPS maximum sampling rate, 16-bit resolution with no missing codes, pseudo-bipolar differential input range, on-chip 4.096 V reference, low power consumption optimized for micro-power designs, and a standard parallel (byte-selectable) digital interface compatible with common microcontrollers and DSPs. Industrial temperature operation from -40C to +85C ensures reliability in factory and outdoor environments. Architecturally, the device uses a charge-redistribution SAR core, a high-bandwidth differential track-and-hold, and an internal low-drift reference. The pseudo-bipolar differential input accepts signals centered around the common-mode voltage, simplifying interface with bridge sensors, instrumentation amplifiers, and single-ended signals after DC biasing. Typical applications include industrial process control, multi-channel data acquisition systems, optical encoder feedback, vibration analysis, precision weigh scales, and motor control position feedback. The parallel interface simplifies connection to legacy microcontrollers and DSPs that lack high-speed serial peripherals. When designing with this device, pay attention to analog and digital supply decoupling and layout: route AVDD and DVDD separately with star-ground topology, place 10 uF bulk + 0.1 uF ceramic bypass capacitors close to each supply pin, and isolate the analog and digital ground planes with a single-point connection beneath the ADC. Failure to isolate grounds will couple digital switching noise into the analog front end and degrade SNR. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not found in the manufacturer datasheet alone, helping engineers select, source, and implement the ADS8402IPFBTG4 with confidence.
ADS8406IPFBRG4 - 16-Bit 1.25MSPS SAR ADC | Texas Instruments
The Texas Instruments ADS8406IPFBRG4 is a 16-bit, 1.25 MSPS successive approximation register (SAR) analog-to-digital converter with a pseudo-bipolar, fully differential input, internal 4.096 V reference, and parallel interface, housed in a 48-pin TQFP (PFB) package. It provides true 16-bit no-missing-code operation with 0.0031% linearity error (INL) and 650 us conversion time, making it suitable for precision data acquisition in industrial and instrumentation systems. An SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm through an internal capacitor-based digital-to-analog converter to compare the sampled input against successive reference-weighted levels, settling to a digital output in N conversion cycles for N bits of resolution. SAR ADCs sit within the broader ADC taxonomy alongside delta-sigma, pipeline, and flash converters, and are valued for low latency, deterministic behavior, and excellent DC accuracy without the latency penalty of oversampling converters. Key features of the ADS8406IPFBRG4 include 1.25 MHz sample rate, a fully differential analog input that accepts pseudo-bipolar input ranges, an internal low-drift 4.096 V reference, and a wide 2.95 V to 5.25 V analog supply range with a separate digital I/O supply. The device supports both 16-bit parallel output and an 8-bit bus option using two read cycles, simplifying connection to 8-bit microcontrollers and 16-bit DSPs alike. Typical power dissipation is approximately 155 mW at 1.25 MSPS, and the part is specified over the -40 C to +85 C industrial temperature range. Typical applications include industrial process control, optical networking power monitoring, multi-channel data acquisition systems, medical instrumentation front-ends, and high-speed closed-loop control. The combination of high linearity, internal reference, and parallel interface makes the ADS8406 a strong fit for systems that demand deterministic throughput and DC accuracy rather than high channel density. When designing with the ADS8406IPFBRG4, decouple AVD and DVDD with separate 1 uF and 100 nF ceramic capacitors placed as close as possible to the supply pins, and use a ground plane to control digital return currents. Drive the analog input with a low-impedance, low-distortion amplifier such as the THS4031 or OPA227 to preserve the converter's linearity at the rated sample rate. Observe the t_acq acquisition-time and t_conv conversion-time timing budgets in the timing diagram to avoid degraded SNR at full throughput.
ADS8406IPFBTG4 - 16-Bit 1.25MSPS SAR ADC | Texas Instruments
The Texas Instruments ADS8406IPFBTG4 is a 16-bit, 1.25 MSPS successive-approximation-register (SAR) analog-to-digital converter with a pseudo-bipolar, fully differential analog input, an internal 4.096 V reference, and a parallel data interface, housed in a 48-pin TQFP (7x7 mm) package. It targets precision data-acquisition systems that need a wide dynamic range, low power, and a simple 16-bit or byte-wide host interface. An SAR ADC is a type of analog-to-digital converter that performs a binary search across an internal capacitive DAC in N clock cycles, producing one conversion per cycle with no pipeline latency. Compared with delta-sigma or pipelined ADCs, SAR converters are valued for deterministic latency, low power, and excellent behavior on multiplexed or single-shot inputs, making them a workhorse in industrial instrumentation. The ADS8406 belongs to TI's broad precision-SAR family, sitting between low-speed 16-bit audio ADCs and high-speed 14/16-bit pipeline parts. Key features include 16-bit resolution with no missing codes, a 1.25 MHz maximum sample rate, a fully differential pseudo-bipolar input supporting ±2*VREF or 0-4*VREF ranges, a low conversion time around 650 ns, and an internal 4.096 V reference that simplifies BOM. The 48-TQFP package exposes a standard parallel interface that can be configured as a single 16-bit read or two 8-bit cycles, easing connection to 8-bit microcontrollers and DSPs. Typical INL is around +/-2 LSB and SINAD exceeds 85 dB at lower input frequencies. Typical applications include industrial process control and PLC analog input modules, optical-module bias control, multi-channel data-acquisition front ends, medical instrumentation such as patient monitoring, and precision weigh scales or strain-gauge signal chains. The combination of a 1.25 MSPS throughput and low 35 mW typical dissipation lets the part serve both multiplexed and continuous-stream designs. When designing with the ADS8406, use a low-impedance RC network at the analog input and decouple AVDD/DRVDD with 1 uF and 100 nF ceramic capacitors placed within 5 mm of the supply pins. Keep the parallel bus short and series-terminate at the driver to avoid digital coupling into the analog input. The internal 4.096 V reference can be bypassed for an external reference if higher accuracy is required. This page synthesizes distributor pricing, drop-in alternatives from the ADS840x and ADS841x family, and practical design notes not collected in the TI datasheet alone.
ADS8412IPFBRG4 - 16-Bit 2MSPS Differential ADC | Texas Instruments
The Texas Instruments ADS8412IPFBRG4 is a 16-bit, 2 MSPS, unipolar differential-input, micropower sampling analog-to-digital converter with parallel interface and internal reference. Housed in a 48-pin TQFP (PFB) package, the device integrates a SAR (successive-approximation) ADC core, an internal 4.096 V reference, a high-bandwidth track-and-hold amplifier, and an internal oscillator, providing a complete data acquisition front end for industrial and instrumentation systems. A Successive Approximation Register (SAR) ADC is a type of analog-to-digital converter that uses a binary-search algorithm against an internal DAC to resolve one bit per clock cycle. SAR ADCs are prized for their deterministic latency (no pipeline delay), excellent DC accuracy, low power consumption, and intrinsic suitability for multiplexed multi-channel systems and precision measurement loops. The ADS8412 sits in the hierarchy SAR -> ADC -> Data Acquisition IC -> Signal Chain -> Semiconductor. Key features include ±0.5 LSB INL (typical), ±0.5 LSB DNL, 84 dB SINAD, 2 MSPS throughput, and a 5 V analog supply with a 3 V to 5.5 V digital supply for flexible host interfacing. The internal reference eliminates the need for an external precision reference, reducing BOM cost and PCB footprint. A unipolar differential input range of 0 V to 4.096 V (±2.048 V differential) accepts both bipolar signals via external scaling and true-differential signals directly. Architecturally, the ADS8412 combines a high-bandwidth track-and-hold front end with a low-noise charge-redistribution DAC and internal reference buffer, achieving the low-noise and 84 dB SINAD performance required for 16-bit DC measurements. The micropower design (typically 110 mW at 2 MSPS, dropping to 1 mW in power-down) makes it suitable for portable and line-powered instruments alike. Typical applications include industrial process control loop digitizers, multi-channel data acquisition systems, portable instrumentation, optical sensor front ends, and precision weigh-scale ADCs. The 16-bit resolution and integrated reference simplify calibration in measurement equipment. When designing with the ADS8412, ensure that the analog and digital supplies are properly decoupled (10 microfarad + 100 nanofarad ceramic at each supply pin) and routed as star grounds to avoid digital-noise coupling into the analog front end. The internal reference requires a 10 microfarad external bypass capacitor on REFOUT for stability. This page synthesizes distributor pricing, drop-in alternatives drawn from TI's same-family portfolio, and practical SAR-ADC design notes not found in the manufacturer datasheet, helping engineers accelerate the device selection and PCB bring-up process.
ADS8413IRGZRG4 - 16-Bit 2MSPS SAR ADC with LVDS Interface | Texas Instruments
The Texas Instruments ADS8413IRGZRG4 is a 16-bit, 2-MSPS successive-approximation (SAR) analog-to-digital converter with a 4 V internal reference and a 200 Mbps LVDS serial interface, housed in a 48-pin VQFN (RGZ) package measuring 7x7 mm. The converter accepts a unipolar differential analog input and operates from a single 4.75 V to 5.25 V analog supply with a low-voltage digital supply range, making it suitable for high-density data-acquisition boards. The integrated capacitor-based SAR architecture provides inherent sample-and-hold, eliminating the need for an external front-end track-and-hold amplifier. A successive-approximation-register ADC is a precision converter class that performs a binary search across an internal capacitor array to resolve each conversion in N clock cycles, where N equals the converter resolution in bits. SAR ADCs sit in the broader hierarchy of analog-to-digital converters alongside flash, pipeline, sigma-delta, and dual-slope architectures. They are valued in industrial and instrumentation designs for their deterministic latency, absence of pipeline delay, and excellent DC linearity. The ADS8413 family represents TI's high-throughput, fully-differential SAR line, combining low-noise sampling with a high-speed LVDS digital output. Key features include 2 MSPS guaranteed throughput, 16-bit no-missing-codes performance, integrated 4 V low-drift reference, true-differential analog input, LVDS serial data output, and an ultra-low aperture delay. The wide input common-mode range and high common-mode rejection simplify front-end signal conditioning, allowing direct connection to bridge sensors, current-shunt amplifiers, and differential drivers without complex level shifting. The device also supports daisy-chaining for multi-channel systems via the LVDS clock and data lines. The ADS8413 architecture pairs a precision CDAC array with a high-speed comparator and a proprietary LVDS output stage that minimizes EMI and ground bounce. Internal reference buffering and on-chip decoupling reduce external component count, while the SYNC/PD inputs allow synchronization and power-down control across multiple converters. Compared with parallel-output ADCs of similar speed, the LVDS interface cuts pin count and PCB routing complexity. Typical applications include industrial process control, high-accuracy data acquisition systems, medical instrumentation, optical networking, vibration and acoustic analysis, and automated test equipment. The combination of 16-bit resolution and 2 MSPS makes the part well suited to multi-channel digitizers where both DC accuracy and dynamic performance matter. When designing with this device, place the analog and LVDS grounds on a split plane joined under the IC, and provide 10 uF plus 0.1 uF decoupling near the supply pins. The LVDS trace impedance must be controlled to 100 ohms differential, and series termination resistors should be placed close to the driver outputs. This page synthesizes distributor pricing, drop-in alternatives, and practical layout notes not found in the manufacturer datasheet.
ADS8413IRGZTG4 - 16-bit, 2-MSPS SAR ADC w/ LVDS | Texas Instruments
The Texas Instruments ADS8413IRGZTG4 is a 16-bit, 2-MSPS successive-approximation-register (SAR) analog-to-digital converter with a 4-V internal reference and a 200-Mbps LVDS serial interface, housed in a 48-pin VQFN (RGZ) 7x7 mm package. According to the manufacturer datasheet, the device operates from a single 4.75 V to 5.25 V analog supply and a 3 V to 3.6 V digital supply, supports unipolar differential inputs with up to +/-12 V or 0 V to +12 V true bipolar ranges when configured externally, and guarantees 16-bit no-missing-code performance with a maximum linearity error of 0.0061% (+/-4 LSB). A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm combined with an internal capacitive DAC to digitize an input voltage one bit at a time per clock cycle, achieving high accuracy at moderate sampling rates. Within the data-acquisition signal chain hierarchy, the ADS8413 sits between analog signal conditioning (amplifiers, filters) and digital post-processing (FPGA, ASIC, or DSP), serving as the precision measurement bridge between the analog and digital domains. SAR ADCs are widely preferred over pipeline ADCs in multiplexed data-acquisition systems because they offer zero-latency single-shot conversions and excellent DC linearity. Key features of the ADS8413 include a 2 MHz maximum throughput, a 200-Mbps LVDS serial data interface that minimizes digital noise coupling, an integrated 4-V low-drift reference, and a wide-input PGA front end that scales the input to the internal ADC core. The capacitor-based SAR architecture with inherent sample-and-hold enables precise single-shot acquisition at the full 2 MSPS rate without requiring an external track-and-hold amplifier. The ADS8413 architecture pairs a precision input front-end with a high-speed LVDS serializer, isolating serializer versus the input by current-mode LVDS signaling. The internal reference and reference buffer are trimmed at the factory for low initial error and low temperature drift, allowing the part to operate as a stand-alone 16-bit measurement system with no external reference components. Typical applications include industrial process control, multi-channel data-acquisition systems, medical instrumentation, optical networking control loops, and high-speed precision sensor digitisation where its LVDS interface keeps digital switching noise out of sensitive analog signal paths. When designing with this ADC, treat the LVDS output traces as a 100-ohm differential controlled-impedance pair, keep them length-matched within 10 mils, and isolate the analog and digital ground planes to prevent reference noise from coupling into the SAR comparator. Provide a clean 5 V AVDD with a 10 uF + 0.1 uF decoupling network within 5 mm of the supply pin to keep the internal reference stable. This page synthesizes distributor pricing, drop-in same-brand alternatives, and practical design notes drawn from the manufacturer datasheet, providing engineering context not found in any single distributor listing.