Circuitos integrados

ADS8401IBPFBR

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.

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ADS8401IBPFBT

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.

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ADS8401IBPFBTG4

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.

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ADS8401IPFBRG4

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.

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ADS8401IPFBTG4

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.

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ADS8402IBPFBRG4

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.

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ADS8402IPFBR

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.

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ADS8402IPFBRG4

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.

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ADS8402IPFBTG4

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.

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ADS8406IPFBRG4

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.

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ADS8406IPFBTG4

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.

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ADS8412IPFBRG4

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.

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ADS8413IRGZRG4

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.

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ADS8413IRGZTG4

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.

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ADS8471IBRGZR

ADS8471IBRGZR - 16-Bit 1MSPS SAR ADC w/ Internal Ref | TI

The Texas Instruments ADS8471IBRGZR is a 16-bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter with an internal 4.096-V reference and a pseudo-bipolar unipolar input range, packaged in a 48-pin VQFN (RGZ) 7x7 mm footprint. It combines a precision capacitor-based SAR core with inherent sample-and-hold and provides both a full 16-bit parallel interface and an 8-bit bus option via two read cycles. A SAR ADC is a successive-approximation-register analog-to-digital converter - a precision data-converter topology that uses a binary-search algorithm against an internal DAC to resolve each conversion in N clock cycles for N bits of resolution. SAR ADCs offer deterministic latency, low power, and excellent DC accuracy with no pipeline delay, which is why the SAR topology dominates in industrial process control, precision instrumentation, and battery-powered data-acquisition applications. Key features include 1 MSPS throughput, 16-bit no-missing-codes resolution, an internal low-drift 4.096-V reference, pseudo-bipolar inputs up to +/-4.096 V or 0 to 4.096 V unipolar operation, parallel 16-bit or byte-wide 8-bit interface, and industrial -40C to +85C operating range. The integrated reference eliminates an external component, simplifies BOM, and improves temperature stability. The SAR core uses a charge-redistribution DAC architecture with internal calibration, achieving excellent linearity and low THD. The internal 4.096-V reference is low-drift and provides a ratiometric reference for the input signal chain. Typical applications include industrial process control PLC analog input modules, multichannel data-acquisition systems, precision instrumentation and test equipment, optical encoder feedback loops, and medical imaging front-ends. The wide analog input range accommodates 5-V or +/-5-V industrial transducer signals directly. When designing with this device, place the decoupling capacitors as close to the AVDD and DVDD pins as possible and follow the datasheet reference-driver layout to avoid reference noise coupling into the conversion result. Use the BYTE mode pin to simplify connection to 8-bit microcontrollers and ensure the BUSY/INT signal is monitored to avoid read contention. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone TI datasheet document.

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ADS8472IBRGZR

ADS8472IBRGZR - 16-Bit 1MSPS SAR ADC, Pseudo-Bipolar | TI

The Texas Instruments ADS8472IBRGZR is a 16-bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter with a pseudo-bipolar, fully differential input range and an internal 4.096-V reference, housed in a 48-pin VQFN (RGZ) 7x7 mm package with exposed thermal pad. It delivers up to 1 MSPS throughput from a 3-V/5-V analog supply and supports both a full 16-bit parallel interface and an 8-bit bus option using two read cycles, giving designers flexible host connectivity. An SAR ADC is a precision converter that performs a binary search across an internal capacitive array, sampling the input on an internal track-and-hold capacitor and converting in a fixed number of clock cycles per conversion. SAR converters are prized for their deterministic latency, zero-pipeline delay, and excellent DC linearity, which is why 16-bit 1-MSPS SARs sit between 8-/10-/12-bit general-purpose ADCs and higher-speed delta-sigma/pipeline parts in the data-converter hierarchy (data converters -> ADCs -> SAR ADCs -> precision SAR). Key features include ±0.65 LSB (max) INL, ±0.5 LSB (typ) DNL with no missing codes, internal low-drift 4.096-V reference, single +5-V analog supply (with a separate +3-V to +5-V digital I/O supply), pseudo-bipolar fully differential inputs spanning approximately ±4.096 V or 0 V to +4.096 V depending on input configuration, and a hardware/serial-interface-friendly BYTE mode. The wide digital-host tolerance simplifies pairing with 3.3-V FPGAs, DSPs, and 5-V microcontrollers. The device uses a charge-redistribution capacitive DAC core with inherent sample-and-hold, so an external front-end buffer/amplifier is typically needed only when source impedance exceeds the datasheet guidance. Power consumption is around 110 mW at 1 MSPS and scales down at lower throughput, with explicit nap and power-down modes for duty-cycled battery or data-acquisition scenarios. Typical applications include industrial process-control data acquisition modules, multi-channel isolated measurement front ends, optical encoder/position-sensing signal chains, medical instrumentation front ends, and seismic/vibration monitoring where 16-bit noise-free resolution and DC accuracy are critical. The pseudo-bipolar differential input lets it accept both ±V sensors and unipolar transducer outputs. When designing with this part, keep analog and digital grounds joined at a single star point near the exposed pad, and allocate sufficient copper for the EP to keep junction temperature within the -40 °C to +85 °C industrial range. Choose input RC components per the datasheet front-end section to avoid degradation of THD and noise. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a faster path from selection to prototype.

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ADS8472IRGZR

ADS8472IRGZR - 16-Bit 1MSPS SAR ADC w/ 4.096V Ref | Texas Instruments

The Texas Instruments ADS8472IRGZR is a 16-bit, 1-MSPS successive-approximation-register analog-to-digital converter with an internal 4.096-V reference and a pseudo-bipolar, fully-differential input range, housed in a 48-pin VQFN (RGZ) package measuring 7x7 mm. According to TI product literature, the converter integrates a 16-bit capacitor-based SAR ADC with inherent sample-and-hold and is specified for 0.65 LSB maximum INL. The device exposes a full 16-bit parallel interface or, alternatively, an 8-bit bus mode that latches the data across two read cycles for seamless connection to 8-bit host processors. An SAR (Successive Approximation Register) ADC is a converter topology that performs a binary search against the input voltage using an internal capacitive DAC and a comparator. Compared with pipeline or delta-sigma converters, SAR architectures deliver single-cycle latency, deterministic response, and excellent dynamic performance at moderate sampling rates (kHz-to-low-MHz), making them ideal for multiplexed data-acquisition systems, industrial control loops, and instrumentation front-ends. Key features include true-differential inputs that reject common-mode noise, an internal low-drift 4.096-V reference that eliminates an external reference IC, ±5 V analog supply operation with a dedicated digital supply pin, and a hardware BYTE/WORD pin for bus-width selection. The SAR core achieves 1-MSPS throughput while the integrated reference and input driver maintain DC accuracy across the rated industrial temperature range. Typical applications include industrial process-control analog input modules, multi-channel data-acquisition systems, precision weigh scales, optical-module monitoring, and motor-control feedback sampling. The pseudo-bipolar differential input accepts ±5 V (or 0 V to +5 V) true-differential signals, allowing direct connection to bridge sensors and current-sense amplifiers without extra signal conditioning.

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ADS8481IBRGZR

ADS8481IBRGZR - 18-Bit 1MSPS SAR ADC w/Ref | Texas Instruments

The Texas Instruments ADS8481IBRGZR is an 18-bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter with an internal 4.096 V reference, packaged in a 48-pin VQFN (RGZ, 7x7 mm) with an exposed thermal pad. The device features a single pseudo-differential unipolar input, a parallel interface (with 18-bit, 16-bit, or 8-bit bus modes), and low ±0.1 mV offset error over temperature. It operates from a single 4.75 V to 5.25 V analog supply with separate logic I/O supply support. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision data-acquisition IC that resolves an analog input one bit at a time using a comparator, a DAC, and a binary search register, completing a full conversion in N clock cycles. SAR ADCs sit in the broader hierarchy of precision converters (SAR -> ADC -> data converter -> signal chain IC -> semiconductor), offering the best trade-off of speed, resolution, and power for many industrial and instrumentation applications, since they require no pipeline latency. Key features of the ADS8481IBRGZR include ±0.6 LSB typical INL/DNL, 87 dB SNR, no missing codes over the full industrial -40 °C to +85 °C range, internal 4.096 V low-drift reference, and a true 18-bit parallel data bus. The wide 1 MSPS sampling rate makes it suitable for high-throughput multichannel systems through external multiplexer switching. Architecturally, the part uses a charge-redistribution DAC array, an inherent sample-and-hold, and an internal clock. The pseudo-differential input structure simplifies front-end signal conditioning while preserving good common-mode rejection; it also simplifies PCB layout by reducing the number of true differential traces required. Typical applications include industrial process control, medical instrumentation, vibration analysis, optical encoders, and high-speed data acquisition systems. The part also fits next-generation logic-instrumentation designs where low noise and high DC accuracy are required. When designing with this device, place the decoupling capacitors (10 µF tantalum + 0.1 µF ceramic) within a few millimeters of the supply pins and provide a solid ground plane under the exposed pad. To preserve 18-bit accuracy, the reference decoupling capacitor and the input common-mode bypass must be low-ESR ceramic parts placed near the relevant pins. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ADS8481IRGZR

ADS8481IRGZR - 18-Bit 1MSPS SAR ADC w/Ref | Texas Instruments

The Texas Instruments ADS8481IRGZR is an 18-bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter with an internal 4.096-V reference and a pseudo-differential unipolar input range, housed in a 48-pin VQFN (RGZ) exposed-pad package. It delivers true 18-bit no-missing-code (NMC) performance over the industrial -40C to +85C temperature range with low +/-0.1 mV offset error and supports a parallel data interface with selectable 18-bit, 16-bit (two-cycle), or 8-bit (three-cycle) bus widths. An SAR ADC is a sampling converter that uses a charge-redistribution capacitor array and a comparator to digitize an input voltage in N successive approximation steps - one per bit of resolution. SAR ADCs occupy the broad product hierarchy: ADC (analog-to-digital converter) -> data converter -> signal chain IC -> semiconductor. The ADS8481 sits in the precision, medium-speed, single-channel SAR niche favored where high resolution and deterministic latency are required - in contrast to delta-sigma ADCs that offer higher dynamic range at lower bandwidth. The ADS8481 family is also categorized as a micropower sampling data acquisition ADC, emphasizing its low power consumption relative to its 1 MSPS throughput. Key features include 1 MSPS sampling rate, 18-bit NMC over temperature, internal 4.096-V low-drift reference, hardware-configurable output bus width, and an inherent sample-and-hold front end that accepts pseudo-differential unipolar input signals. The internal reference and reference buffer eliminate the need for an external reference IC, simplifying BOM and reducing board area in multichannel designs. The architecture combines a precision input sample-and-hold, a charge-redistribution CDAC, an internal 4.096-V bandgap reference, and a digital interface engine that packs results into 18-bit, 16-bit, or 8-bit words to fit the host's bus width. Because SAR conversion is performed in a single conversion cycle of fixed duration, throughput latency is deterministic and well-suited to multiplexed or closed-loop control applications where timing predictability is critical. Typical applications include industrial process control and data acquisition, multi-axis motor control with position feedback, test and measurement instrumentation, weigh scales and strain-gauge digitizers, and medical instrumentation signal chains. Choose this ADC when a 18-bit, 1 MSPS, single-channel SAR with an internal reference is required in a compact VQFN-48 footprint. When designing with this device, ensure the input common-mode voltage is within the pseudo-differential input range and provide adequate decoupling on REFIN/REF and AVDD pins. The exposed thermal pad (EP) must be soldered to a continuous ground copper pour to keep junction temperature within safe limits. This page synthesizes distributor stock, drop-in pin-compatible alternatives, and practical layout guidance for the 48-pin VQFN exposed-pad variant (RGZ suffix) of the ADS8481 family - complementary to the bare-die or QFP variants discussed in the broader product family datasheet.

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ADS8482IBRGZR

ADS8482IBRGZR - 18-Bit 1MSPS SAR ADC w/ Internal Ref | Texas Instruments

The Texas Instruments ADS8482IBRGZR is an 18-bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter with an internal 4.096 V reference and a pseudo-bipolar, fully differential input, housed in a 48-pin VQFN (RGZ) 7x7 mm package. The converter includes an inherent sample-and-hold front end and offers three interface modes: a full 18-bit parallel bus, a 16-bit option using two read cycles, and an 8-bit bus option using three read cycles, allowing seamless pairing with 8-bit, 16-bit, or 32-bit microcontrollers and DSPs. An SAR ADC is a type of data converter that uses a binary-search algorithm against an internal precision DAC to resolve the input voltage in a fixed number of clock cycles, producing a single-shot conversion with no pipeline latency. SAR ADCs sit within the broader data-converter hierarchy of analog-to-digital converters (ADC) -> data converters -> signal chain -> mixed-signal IC. Compared to delta-sigma or pipeline ADCs, SAR parts like the ADS8482 trade raw speed or oversampling for guaranteed single-cycle latency and deterministic DC behavior, which is why they dominate multiplexing, control-loop, and precision instrumentation front ends. Key specifications include 1 MSPS throughput, 18-bit resolution with no missing codes, an integrated low-drift 4.096 V reference, and a fully differential input that accepts pseudo-bipolar signals. The device supports 3 V or 5 V digital I/O and operates from -40C to +85C industrial temperature range. Its micropower dissipation makes it suitable for multi-channel data-acquisition boards where heat and battery life matter, and the parallel interface simplifies connection to FPGAs, ASICs, and high-speed microcontrollers without requiring a serial-port configuration. The internal architecture uses a charge-redistribution capacitor DAC array combined with a precision bandgap reference and an input sample-and-hold, achieving high DC accuracy and low aperture uncertainty. The pseudo-bipolar differential input allows the converter to digitize signals swinging around a common-mode voltage, eliminating the need for an external instrumentation amplifier in many cases. The configurable bus width (18/16/8 bits) is implemented through hardware mode pins, giving the system designer flexibility for legacy host processors without a full 18-bit port. Typical applications include medical instrumentation such as patient monitoring and diagnostic imaging front ends, industrial process control and multi-channel data-acquisition systems, optical networking power monitoring, precision weigh scales, and seismic or vibration analysis equipment. The combination of 18-bit resolution, 1 MSPS speed, and integrated reference lowers the BOM for high-accuracy systems. When designing with the ADS8482IBRGZR, provide a low-impedance input buffer and place the bypass capacitors as close to the supply pins as possible to maintain linearity at 1 MSPS. The internal reference eliminates the need for an external reference IC, but its decoupling must follow the datasheet layout recommendations for full SNR performance. This page consolidates manufacturer specifications, distributor pricing, and pin-compatible alternatives into a single engineering reference not available on the TI datasheet alone.

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ADS8482IRGZR

ADS8482IRGZR - 18-bit 1MSPS SAR ADC w/Internal Ref | TI

The Texas Instruments ADS8482IRGZR is an 18-bit, 1-MSPS successive-approximation-register (SAR) analog-to-digital converter with an internal 4.096 V reference and a pseudo-bipolar, fully differential input, housed in a 48-pin VQFN (RGZ) 7x7 mm package. The device integrates an 18-bit capacitor-based SAR core with inherent sample-and-hold, supports a parallel interface with selectable 18-bit, 16-bit (two read cycles), or 8-bit bus (three read cycles) data widths, and operates over the industrial -40C to +85C temperature range. An SAR (Successive Approximation Register) ADC is a precision data-converter architecture that uses an internal binary-search algorithm against a precision DAC to resolve a single input sample per conversion cycle. SAR ADCs occupy the middle ground between slow, ultra-precise delta-sigma ADCs and fast but lower-resolution flash ADCs, and are widely used in industrial process control, instrumentation, and medical imaging where single-shot accuracy at moderate sample rates is required. The ADS8482 family sits in the power-management-and-conversion IC hierarchy: ADC -> data converter -> signal-chain IC -> mixed-signal semiconductor. Key differentiating specifications include 1 MSPS guaranteed throughput, an internal low-drift 4.096 V reference that eliminates an external reference IC, true 18-bit no-missing-codes performance, 1 LSB (max) INL and DNL, pseudo-bipolar fully differential inputs accepting ±VREF, and a 48-pin VQFN PowerPAD that keeps theta_JA low enough for industrial operation without a heatsink. The wide digital-interface flexibility (18/16/8-bit) lets designers connect it directly to 8-bit microcontrollers, 16-bit DSPs, or 18-bit ASICs without external glue logic. Architecturally, the ADS8482 combines a charge-redistribution SAR DAC, an on-chip precision bandgap reference, a differential input front end, and a digital interface engine that supports byte, word, and full-word readback. The pseudo-bipolar input accepts signals from -VREF to +VREF around mid-scale (2.048 V), which simplifies signal conditioning for many sensor-bridge and bipolar transducer outputs. Typical applications include medical imaging front ends, industrial process-control data acquisition cards, precision weigh scales, optical sensor interfaces, and vibration analysis. The 1 MSPS throughput and 18-bit resolution make it a strong fit for multiplexed multi-channel systems where one ADC serves many slow sensors. A primary design consideration is bypassing: the reference pin and AVDD rails each require a low-ESR ceramic plus bulk capacitor placed within a few millimeters of the package to achieve the datasheet SNR and DNL. Pseudo-bipolar inputs must be DC-biased to mid-scale via high-impedance resistor networks to avoid clipping on negative excursions. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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ADS8484IBRGZR

ADS8484IBRGZR - 18-Bit 1.25MSPS SAR ADC | Texas Instruments

The Texas Instruments ADS8484IBRGZR is an 18-bit, 1.25-MSPS successive-approximation analog-to-digital converter with an internal 4.096-V reference and a pseudo-bipolar, fully differential input, housed in a 48-pin VQFN (RGZ) 7x7 mm package. It features ±1-LSB INL max, ±0.5-LSB DNL, and single +5V analog supply operation, drawing only 100 mW of power at full sample rate. An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of high-precision data converter that uses a binary search algorithm against an internal DAC to resolve each input sample to N bits in N clock cycles. SAR ADCs occupy the middle ground between flash converters (fast, low resolution) and sigma-delta converters (very high resolution, slow). They combine low latency, deterministic latency, and high accuracy - making them the dominant architecture for industrial data acquisition, instrumentation, and control loops where every microsecond counts. Key features of the ADS8484IBRGZR include a capacitor-based charge-redistribution SAR core with inherent track-and-hold, selectable 8-/16-/18-bit parallel bus interfaces, an internal low-drift 4.096-V reference, and a fully differential analog input that accepts pseudo-bipolar input ranges of ±VREF around an input common-mode of +2.5V. The device supports a hardware-friendly parallel MCU/DSP interface and offers an active-low CONVST pin for precise sampling control. Architecturally, the ADS8484IBRGZR uses a charge-redistribution SAR core with input ESD diodes and on-chip reference buffer. The differential input structure rejects common-mode noise from the analog front end, while the internal reference eliminates the need for an external precision reference - simplifying BOM cost and PCB area. This makes it suitable for high-density industrial layouts where each square centimeter matters. Typical applications include industrial process control loops, multi-channel data acquisition systems (DAQ) for factory automation, medical instrumentation including portable patient monitoring, precision weigh scales, vibration analysis, optical sensor front ends, motor control current sensing, and test and measurement equipment. The wide input common-mode tolerance also suits battery-management systems where ground potentials vary across the system. When designing with this ADC, ensure the analog and digital supply pins each have local decoupling: a 10 uF tantalum plus 0.1 uF ceramic placed within 5 mm of the AVDD/DVDD pins. Keep digital return currents (DB[17:0], CONVST, /CS, /RD) physically separated from the analog return plane to avoid code-dependent noise coupling into the SAR comparator. This page synthesizes distributor pricing, drop-in alternatives including same-package ADS8484 variants, and practical design notes not found in the manufacturer datasheet.

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ADS8505IDBRG4

ADS8505IDBRG4 - 16-Bit 250kSPS SAR ADC w/Parallel Interface | TI

The Texas Instruments ADS8505IDBRG4 is a 16-bit, 250-kSPS successive-approximation analog-to-digital converter with a standard ±10-V (also ±5 V and ±3.3 V) input range, integrated 2.5 V reference, and a parallel microprocessor interface, packaged in a 28-pin SSOP (DB) with tape-and-reel packaging. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision data-conversion architecture that uses a binary-search algorithm against an internal DAC and comparator to resolve N bits in N clock cycles. SAR ADCs sit in the broader taxonomy of ADCs -> data converters -> signal chain ICs -> mixed-signal semiconductors, combining low power consumption, deterministic latency, and high DC accuracy. They are preferred over delta-sigma converters in multiplexed, multi-channel data-acquisition systems where latency and per-channel settling matter. Key features include ±1.5 LSB maximum INL, ±105 dB SFDR at the 250 kHz sample rate, single +5 V analog supply operation, and ±10 V true bipolar input range using on-chip input scaling resistors. The device integrates a high-bandwidth track-and-hold, internal 2.5 V reference, and 3-state output drivers, eliminating the need for an external reference or high-current bus interface. The 28-SSOP package provides a low-profile surface-mount footprint suitable for compact data-acquisition front ends. Architecturally, the ADS8505 uses a charge-redistribution capacitor DAC combined with a low-noise comparator and a precision laser-trimmed input resistor ladder. The capacitor array produces inherently low digital noise and high spurious-free dynamic range because the SAR switching pattern generates minimal kickback at the input. The internal reference and full-scale calibration registers deliver guaranteed INL/DNL across the industrial temperature range. Typical applications include industrial process control, multi-channel data-acquisition systems, instrumentation and test equipment, medical imaging front ends, and precision sensor signal conditioning. The ±10 V input range and 16-bit resolution enable direct connection to legacy industrial transducers and 4-20 mA loop receivers without external signal conditioning. When designing with this part, note that the parallel interface requires careful PCB routing to avoid digital crosstalk into the analog inputs; keep the digital bus traces short and guard the analog ground plane. The internal reference requires an external bypass capacitor; consult the datasheet for the recommended capacitor value and ESR range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement and design engineers a single reference for the ADS8505IDBRG4.

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ADS8508IBDWRG4

ADS8508IBDWRG4 - 12-Bit 250kSPS Serial CMOS ADC | Texas Instruments

The Texas Instruments ADS8508IBDWRG4 is a 12-bit, 250-kSPS successive-approximation-register (SAR) analog-to-digital converter with a serial interface, housed in a 20-pin SOIC (DW) wide-body package. It accepts ±3.33V, ±5V, and ±10V bipolar input ranges through an on-chip input resistor divider, and provides 73 dB SINAD, ±0.45 LSB INL typical linearity, and a single 5V analog supply. The device integrates sample-and-hold, internal clock, internal 2.5V reference, and a high-speed synchronous serial data output. An SAR ADC is a type of data converter that uses a binary-search successive approximation algorithm to digitize an analog input one bit at a time per clock cycle. SAR converters sit in the broader hierarchy: ADC -> data converter -> signal-chain IC -> mixed-signal semiconductor. They are valued for low latency, deterministic behavior, and excellent DC accuracy, making them a popular alternative to delta-sigma and pipeline architectures in multiplexed data-acquisition systems. Key features include 250 kHz throughput, hardware- or software-controlled conversion start, an external/internal clock select for the serial data frame, and TAG-input capability for multi-channel systems. The internal reference is trimmed for low drift, and the bipolar input range eliminates external signal-conditioning in industrial ±10V or ±5V transducer interfaces. The serial interface (SPI-/QSPI-/Microwire-compatible) reduces board-routing complexity versus parallel ADCs. Typical applications include industrial process control (4-20 mA loop digitization), multi-channel data-acquisition front ends, portable instrumentation, and test/measurement equipment. The wide input range supports direct connection to transducers, sensors, and bipolar signal sources without external op-amp scaling. When designing with this device, ensure the analog and digital grounds are tied at the package via a low-impedance star connection, and place 10 µF + 0.1 µF decoupling on AVDD+ and DVDD. The BW pad is the bipolar common-mode return; keep its trace short. Do not exceed 7 V absolute on analog inputs without external clamping. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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Productos (35.000+)

ADS8401IBPFBR - 16-Bit 1.25MSPS SAR ADC w/ Ref | Texas Instruments

ADS8401IBPFBT - 16-Bit 1.25MSPS SAR ADC w/ Internal Ref | TI

ADS8401IBPFBTG4 - 16-Bit 1.25MSPS SAR ADC w/ Ref | TI

ADS8401IPFBRG4 - 16-Bit 1.25MSPS SAR ADC with Reference | TI

ADS8401IPFBTG4 - 16-Bit 1.25MSPS Parallel ADC w/Ref | TI

ADS8402IBPFBRG4 - 16-bit 1.25MSPS ADC w/Ref TQFP-48 | TI

ADS8402IPFBR - 16-Bit 1.25MSPS Pseudo-Bipolar Parallel ADC | Texas Instruments

ADS8402IPFBRG4 - 16-Bit 1.25MSPS Parallel ADC w/Ref | TI

ADS8402IPFBTG4 - 16-Bit 1.25MSPS Parallel ADC | Texas Instruments

ADS8406IPFBRG4 - 16-Bit 1.25MSPS SAR ADC | Texas Instruments

ADS8406IPFBTG4 - 16-Bit 1.25MSPS SAR ADC | Texas Instruments

ADS8412IPFBRG4 - 16-Bit 2MSPS Differential ADC | Texas Instruments

ADS8413IRGZRG4 - 16-Bit 2MSPS SAR ADC with LVDS Interface | Texas Instruments

ADS8413IRGZTG4 - 16-bit, 2-MSPS SAR ADC w/ LVDS | Texas Instruments

ADS8471IBRGZR - 16-Bit 1MSPS SAR ADC w/ Internal Ref | TI

ADS8472IBRGZR - 16-Bit 1MSPS SAR ADC, Pseudo-Bipolar | TI

ADS8472IRGZR - 16-Bit 1MSPS SAR ADC w/ 4.096V Ref | Texas Instruments

ADS8481IBRGZR - 18-Bit 1MSPS SAR ADC w/Ref | Texas Instruments

ADS8481IRGZR - 18-Bit 1MSPS SAR ADC w/Ref | Texas Instruments

ADS8482IBRGZR - 18-Bit 1MSPS SAR ADC w/ Internal Ref | Texas Instruments

ADS8482IRGZR - 18-bit 1MSPS SAR ADC w/Internal Ref | TI

ADS8484IBRGZR - 18-Bit 1.25MSPS SAR ADC | Texas Instruments

ADS8505IDBRG4 - 16-Bit 250kSPS SAR ADC w/Parallel Interface | TI

ADS8508IBDWRG4 - 12-Bit 250kSPS Serial CMOS ADC | Texas Instruments