Texas Instruments ADS9110IRGET

Overview

ADS9110IRGET from Texas Instruments is an 18-bit, 2-MSPS successive approximation register (SAR) analog-to-digital converter optimized for high-precision industrial data acquisition. It delivers ±0.5 LSB INL, 100 dB SNR, and –118 dB THD at full throughput, with unipolar differential input range up to ±5 V and operation across –40°C to +125°C. It serves as the front-end digitizer in motor control feedback loops requiring low-latency, no-missing-code performance.

For engineers reviewing the ADS9110IRGET datasheet, ADS9110IRGET pinout, ADS9110IRGET application, or ADS9110IRGET equivalent, this page provides verified specifications, validated package mapping, confirmed SPI and enhanced-SPI timing behavior, real-world application context for test equipment and medical imaging systems, and two technically documented alternative parts with explicit functional and interface differences.

Technical Context

The ADS9110IRGET implements a charge-redistribution SAR architecture with internal conversion clocking, enabling deterministic 300–340 ns conversion time and true no-latency output. Its converter module fully disconnects AINP/AINM during conversion and reacquires in <150 ns, supporting oversampling for dynamic range enhancement without pipeline delay.

Its interface module supports three protocols: standard SPI (140 MHz SCLK), enhanced-SPI (multiSPI™, 40 MHz SCLK with parity), and source-synchronous modes (external or internal strobe). All digital I/Os comply with JESD8-7A at 1.8 V DVDD, and RVS provides real-time ADC status indication independent of CS state.

Key Specifications

Pinout & Package

ADS9110IRGET is housed in a 4 mm × 4 mm, 24-pin VQFN package (RGE) with exposed thermal pad. The package supports fine-pitch routing and efficient heat dissipation via GND-connected thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS9110IRGET, ADS9120IRGET trades 2-bit resolution and 5 dB SNR for 25% higher throughput in the same footprint, while AD7616BSTZ sacrifices single-channel linearity and speed to deliver integrated multi-channel functionality-neither is pin-compatible nor functionally interchangeable without redesign.

Availability

ADS9110IRGET is available at Aetrix Electronics and suitable for test and measurement equipment, motor control systems, and medical imaging subsystems requiring stable component supply across extended temperature and long production lifecycles.

Supply support for ADS9110IRGET 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade IC design.

The ADS9110IRGET belongs to TI's high-performance SAR ADC product line, engineered specifically for applications demanding simultaneous high speed, high resolution, and robust operation in harsh thermal environments.

FAQ

What is the maximum supported reference voltage for ADS9110IRGET?

The ADS9110IRGET accepts an external reference voltage from 2.5 V to 5 V on the REFP pin relative to REFM. At 5 V reference, the device achieves its full ±5 V unipolar differential input range and optimal AC performance (100 dB SNR, –118 dB THD). Operation outside this range violates absolute maximum ratings and may cause permanent damage or parametric failure. The ADS9110IRGET reference input is independent of AVDD voltage level.

Does ADS9110IRGET support true no-latency operation, and how is it implemented?

Yes, ADS9110IRGET provides true no-latency output: the final 18-bit conversion result is available immediately after conversion completes, with no pipeline stages or internal FIFO buffering. This is achieved through its charge-redistribution SAR architecture and synchronous timing-conversion ends, data appears on SDO-x lines, and RVS asserts-all within defined timing windows (e.g., td_CKDO = 6.5 ns max). No additional latency is added by digital interface protocol overhead in enhanced-SPI mode.

What are the power supply requirements for ADS9110IRGET, and how does power scaling work?

ADS9110IRGET requires two independent 1.8 V supplies: AVDD (analog) and DVDD (digital), each regulated within 1.65 V to 1.95 V. Total active power is 15 mW at 2 MSPS (9 mW AVDD + 6 mW DVDD). Power scales dynamically: NAP mode draws 500 µA (900 µW), and PD mode draws just 1 µA (1.8 µW). These modes are controlled via SPI register writes and do not require external pin assertion-enabling firmware-driven power optimization without hardware changes.

How does the enhanced-SPI (multiSPI™) interface of ADS9110IRGET differ from standard SPI?

The enhanced-SPI interface of ADS9110IRGET operates at 40 MHz SCLK (vs 140 MHz for standard SPI at 2 MSPS), reducing EMI and easing PCB layout. It transmits 18-bit conversion data plus 1 parity bit per frame, enabling host-side error detection. Unlike standard SPI, enhanced-SPI uses deterministic timing aligned to RVS strobe and supports both SDR and DDR data capture-making it especially robust for FPGA-based hosts where clock domain crossing is a concern. ADS9110IRGET remains backward-compatible with standard SPI controllers.

Is ADS9110IRGET pin-compatible with any other devices in the same family?

Yes, ADS9110IRGET is pin-compatible with ADS9120IRGET-a 16-bit, 2.5 MSPS variant sharing identical 24-pin VQFN (RGE) packaging, pin functions, and power sequencing. This allows drop-in replacement where resolution requirements permit relaxation. However, ADS9110IRGET is not pin-compatible with ADS8900 or ADS8910 series devices due to differing pin counts, package footprints, and interface signal assignments.