Texas Instruments ADS7960SDBTR

Overview

ADS7960SDBTR from Texas Instruments is a 12-bit, 16-channel, single-ended SAR analog-to-digital converter with 1-MSPS sample rate, zero-latency operation, and 20-MHz serial interface. It operates from 2.7–5.25 V analog supply and 1.7–5.25 V I/O supply, supports dual unipolar input ranges (0 to VREF and 0 to 2×VREF), and integrates two programmable per-channel alarm thresholds. It is used in high-speed PLC analog input modules requiring deterministic timing and channel sequencing.

For engineers reviewing the ADS7960SDBTR datasheet, ADS7960SDBTR pinout, ADS7960SDBTR application, or ADS7960SDBTR equivalent, key selection considerations include its 16-channel count, 12-bit resolution, TSSOP-38 package footprint, GPIO-configurable alarm outputs, and compatibility with REF5025 reference voltage sources in multi-channel monitoring systems.

Technical Context

The ADS7960SDBTR implements a capacitor-based SAR architecture with integrated sample-and-hold, enabling zero-latency conversion cycles synchronized to CS falling edge. Its serial interface uses CS (active-low), SCLK, SDI, and SDO for microprocessor/DSP interfacing without glue logic.

It supports both auto-sequencing across preselected channels and manual channel selection per conversion cycle. Input bandwidth is 47 MHz (3 dB), and it features four individually configurable GPIOs-GPIO0 (alarm output), GPIO1 (low-alarm), GPIO2 (range select), and GPIO3 (power-down)-all implemented in the TSSOP-38 package.

Key Specifications

Pinout & Package

ADS7960SDBTR is packaged in a 38-pin TSSOP (DBT) with nominal body size 9.70 mm × 4.40 mm. All pins are electrically validated per TI SLAS605C Rev C (July 2018). NC pins (11, 12, 13, 14, 15, 16, 17, 19) must be connected to AGND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multichannel SAR ADC applications.

Compared with ADS7961SDBTR and ADS8688IPWR, ADS7960SDBTR uniquely balances 16-channel density, full GPIO configurability (including range select and power-down), and per-channel alarm support in a standard TSSOP package-making it optimal for scalable industrial I/O modules requiring both flexibility and determinism.

Availability

ADS7960SDBTR is available at Aetrix Electronics and suitable for PLC/IPC analog input modules, optical line card monitoring systems, and medical instrumentation requiring stable component supply across long production lifecycles.

Supply support for ADS7960SDBTR 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, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.

The ADS79xx family-including ADS7960SDBTR-is designed specifically for high-speed, multi-channel data acquisition in programmable logic controllers, optical networking equipment, and medical diagnostics where deterministic latency, flexible channel management, and low power are essential.

FAQ

What is the maximum supported serial clock frequency for ADS7960SDBTR?

The ADS7960SDBTR supports a maximum SCLK frequency of 20 MHz, enabling full 12-bit conversion and data readout within each 1-µs sample period. This timing is validated under recommended operating conditions (e.g., +VA = 5 V, +VBD = 3 V) and ensures reliable communication with high-speed microcontrollers and DSPs without setup/hold violations.

Does ADS7960SDBTR require an external reference voltage?

Yes, ADS7960SDBTR requires an external precision reference applied to REFP and REFM pins. The device is specified for VREF = 2.5 V ±0.1 V (e.g., REF5025), supporting input ranges of 0 to VREF or 0 to 2×VREF. No internal reference is provided; reference accuracy directly impacts total unadjusted error (TUE).

How many analog input channels does ADS7960SDBTR support in its TSSOP-38 package?

ADS7960SDBTR supports 16 single-ended analog input channels (CH0–CH15) in the TSSOP-38 (DBT) package. Pin assignments confirm CH0–CH11 on dedicated pins, with CH12–CH15 accessible via internal multiplexer routing-fully enabled per the ADS7960 device definition in TI's SLAS605C datasheet.

Can ADS7960SDBTR operate with separate analog and digital supply voltages?

Yes, ADS7960SDBTR uses independent supply domains: +VA (2.7–5.25 V) powers the analog core and reference circuitry, while +VBD (1.7–5.25 V) powers digital I/O and logic. This separation minimizes digital noise coupling into analog measurements and enables flexible power architecture design in mixed-signal systems.

What GPIO functions are available on ADS7960SDBTR?

ADS7960SDBTR provides four GPIOs in TSSOP-38: GPIO0 (programmable alarm output), GPIO1 (low-alarm indicator), GPIO2 (input range select: high = 0–2×VREF), and GPIO3 (active-low power-down control). All are software-configurable via internal registers and retain state during conversion cycles.