Texas Instruments ADS8910BRGET

Overview

ADS8910BRGET from Texas Instruments is an 18-bit, 1-MSPS successive approximation register (SAR) analog-to-digital converter with integrated reference buffer and low-dropout regulator (LDO). It delivers ±0.5-LSB INL, 102.5-dB SNR, and operates from a single 5-V analog supply (RVDD) and 1.65–5.5-V digital supply (DVDD), targeting high-precision data acquisition in test equipment and medical imaging systems.

For engineers reviewing the ADS8910BRGET datasheet, ADS8910BRGET pinout, ADS8910BRGET application, or ADS8910BRGET equivalent, key selection factors include its enhanced-SPI interface (20-MHz SCLK at 1-MSPS), integrated LDO enabling single-supply operation, differential unipolar input range of ±VREF (2.5–5 V), and extended temperature range (–40°C to +125°C).

Technical Context

The ADS8910BRGET implements a SAR architecture with no latency output and uses TI's enhanced-SPI protocol-supporting configurable parity bits and quiet-time insertion-to reduce system clocking complexity while maintaining full 18-bit throughput. Its internal LDO powers the analog core, decoupled via DECAP pins, and the reference buffer drives REFIN with <250-µV offset and no droop.

Functional modes include standard conversion triggered by CONVST, asynchronous reset via RST, and programmable power-down for ADC and reference buffer modules. The device supports both SPI-compatible and source-synchronous serial interfaces, with RVS serving as a multifunction status strobe synchronized to data output timing.

Key Specifications

Pinout & Package

The ADS8910BRGET is housed in a 24-pin VQFN package (4 mm × 4 mm, RGE suffix) with exposed thermal pad connected to GND. Pin functions are validated per TI SBAS707B Rev B datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision SAR ADC applications.

Compared with ADS8920BRGET and AD7606C-18BSTZ, the ADS8910BRGET uniquely combines 18-bit precision, integrated LDO/reference buffer, and enhanced-SPI in a compact VQFN-reducing total solution size and simplifying power delivery while maintaining deterministic timing for safety-critical DAQ.

Availability

ADS8910BRGET is available at Aetrix Electronics and suitable for test and measurement equipment, medical imaging subsystems, and high-speed industrial data acquisition requiring stable component supply and long-term production continuity.

Supply support for ADS8910BRGET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision data converters and industrial-grade signal chain solutions.

The ADS891xB family-including ADS8910BRGET-is designed for high-accuracy, high-throughput data acquisition in demanding environments where integration, reliability, and extended temperature operation are critical.

FAQ

What is the maximum sample rate supported by the ADS8910BRGET?

The ADS8910BRGET supports a maximum sample rate of 1 million samples per second (1-MSPS), with no latency output and deterministic timing controlled by the CONVST signal. This rate is achievable with a 20-MHz SCLK using TI's enhanced-SPI interface, and the device maintains full 18-bit resolution and specified AC/DC performance across its entire operating temperature range (–40°C to +125°C).

Does the ADS8910BRGET require an external reference voltage?

The ADS8910BRGET does not require an external reference voltage but supports it via the REFIN pin (2.5–5 V range). It includes an integrated low-droop reference buffer that can condition an external reference or accept a buffered internal VREF. When using the internal reference buffer, external decoupling (10–22 µF ceramic capacitor on REFBUFOUT) is mandatory for stability and accuracy.

How does the enhanced-SPI interface of the ADS8910BRGET differ from standard SPI?

The ADS8910BRGET enhanced-SPI interface adds configurable parity bit output, quiet-time insertion between conversion and data transfer, and support for both SPI-compatible and source-synchronous protocols. Unlike standard SPI, it uses four parallel SDO lines (SDO-0 to SDO-3) to output 18-bit data plus parity in fewer clock cycles, reducing required SCLK frequency to 20 MHz at 1-MSPS-simplifying PCB layout and EMI filtering.

What power supply configurations are supported by the ADS8910BRGET?

The ADS8910BRGET supports dual independent supplies: RVDD (3–5.5 V) for the analog core and DVDD (1.65–5.5 V) for the digital interface. An integrated LDO generates 2.85 V from RVDD to power internal circuitry, eliminating the need for a separate analog supply rail. Decoupling capacitors are required on RVDD, DVDD, DECAP, and REFBUFOUT pins per TI SBAS707B layout guidelines.

Is the ADS8910BRGET pin-compatible with other devices in the ADS891xB family?

Yes, the ADS8910BRGET is pin-to-pin compatible with ADS8912BRGET (500-kSPS) and ADS8914BRGET (250-kSPS) within the same RGE (24-pin VQFN) package. This allows scalable performance selection without PCB redesign-only firmware and timing configuration need adjustment to match the target sample rate and power budget of each variant.