Texas Instruments ADS7066IRTER

Overview

ADS7066IRTER from Texas Instruments is a 16-bit, 8-channel successive-approximation register (SAR) ADC with integrated capless 2.5-V reference, programmable averaging filters enabling 20-bit average resolution, and configurable GPIOs supporting mixed-signal feedback in optical line cards and patient monitors.

For engineers reviewing the ADS7066IRTER datasheet, ADS7066IRTER pinout, ADS7066IRTER application, or ADS7066IRTER equivalent, this page delivers verified specifications including 250-kSPS throughput, ±1 LSB INL, 91.9 dB SNR, 60-MHz SPI interface, and –40°C to +125°C operation - all confirmed for the RTE (WQFN-16) package variant.

Technical Context

The ADS7066IRTER implements a SAR architecture with internal clocking, no latency conversion, and a low-leakage analog multiplexer supporting manual, on-the-fly, and auto-sequence channel selection modes. Its integrated LDO, reference buffer, and offset calibration logic enable stable performance across temperature and supply variations.

Each of its eight channels is independently configurable as analog input, digital input, or push-pull/open-drain digital output via dedicated registers (PIN_CFG, GPIO_CFG, GPO_DRIVE_CFG). The enhanced-SPI interface includes CRC protection for both read and write operations and supports up to 60 MHz clocking with timing margins validated over full industrial temperature range.

Key Specifications

Pinout & Package

ADS7066IRTER is packaged in a 3.00 mm × 3.00 mm, 16-pin WQFN (RTE) with exposed thermal pad. This RoHS-compliant, lead-free package supports reflow soldering and provides low thermal resistance (R_θJA = 47.3°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit SAR ADC applications.

Compared with ADS7067IRTER and AD7682BCPZ-RL7, the ADS7066IRTER uniquely integrates GPIOs, capless reference, and programmable averaging in a 3-mm WQFN - delivering smallest total solution size for space-constrained, mixed-signal telemetry applications.

Availability

ADS7066IRTER is available at Aetrix Electronics and suitable for optical transceivers, patient monitors, and industrial sensor hubs requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.

Supply support for ADS7066IRTER 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 signal chains.

The ADS7066IRTER belongs to TI's ADS70xx family of ultra-small, high-precision SAR ADCs designed specifically for space-constrained optical, medical, and industrial sensing applications where integration, reliability, and low power are critical.

FAQ

What is the maximum sample rate of the ADS7066IRTER?

The ADS7066IRTER achieves a guaranteed maximum sample rate of 250 kSPS with no latency and full 16-bit accuracy across its operating temperature range. This rate is maintained regardless of channel count or averaging configuration, and the device completes each conversion within 3200 ns as specified in the timing characteristics table of the official datasheet SBAS928C.

Does the ADS7066IRTER include an internal voltage reference?

Yes, the ADS7066IRTER features an integrated capless 2.5-V internal reference with ±19 ppm/°C temperature drift and 2.497–2.503 V output tolerance at 25°C. It is disabled by default at power-up; enabling requires setting EN_REF = 1b in the GENERAL_CFG register. A minimum 1-µF ceramic capacitor must be placed between REF and GND for stability.

How many pins on the ADS7066IRTER can be used as GPIOs?

All eight analog input channels (AIN0/GPIO0 through AIN7/GPIO7) on the ADS7066IRTER are fully configurable as general-purpose inputs or outputs via the PIN_CFG and GPIO_CFG registers. Each GPIO supports push-pull or open-drain drive modes, and their direction and state are controlled independently - providing true 8-bit I/O expansion alongside ADC functionality.

What SPI interface features does the ADS7066IRTER support?

The ADS7066IRTER implements an enhanced-SPI interface supporting up to 60 MHz clock frequency, CRC protection on all read and write transactions, and status flag reporting. It operates in standard 4-wire mode (CS, SCLK, SDI, SDO) with defined setup/hold times validated from –40°C to +125°C, and includes automatic Hi-Z control of SDO when CS is deasserted.

Is the ADS7066IRTER pin-compatible with other devices in the ADS70xx family?

Yes, the ADS7066IRTER shares identical pinout and package dimensions (3.00 mm × 3.00 mm WQFN-16) with the ADS7067IRTER. Both devices support the same register map, GPIO configuration, and SPI protocol - enabling drop-in speed upgrades from 250 kSPS to 800 kSPS without PCB redesign or firmware changes beyond throughput-related timing adjustments.