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ADS1263IPW

TIADS1263IPW

Texas Instruments
32 Bit Analog to Digital Converter 5, 10 Input 1 Sigma-Delta 28-TSSOP
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Overview

The ADS1263IPW is a high-precision, 32-bit delta-sigma ADC designed for demanding sensor measurement applications. It features a primary 32-bit ADC alongside an auxiliary 24-bit ADC, enabling simultaneous monitoring of secondary signals or diagnostic data. With an integrated low-noise PGA, internal voltage reference, and dual excitation current sources, it provides a highly integrated solution for bridge sensors and thermocouples.

Why Choose This Part

The ADS1263IPW offers exceptional DC performance with a 7nV/rtHz noise floor and 0.02 percent accuracy, making it one of the highest resolution ADCs in its class. Its dual-ADC architecture allows for background system monitoring or redundant measurements without interrupting the primary high-speed data path. Internal fault monitors and test signals significantly simplify the implementation of functional safety and diagnostic routines in industrial hardware.

Applications

High-Resolution Weigh Scales
Leverages the 32-bit resolution and low-noise PGA to resolve microvolt-level signals from load cells.
Precision Temperature Measurement
Utilizes dual excitation currents and an integrated temperature sensor for RTD and thermocouple interfacing with 50Hz/60Hz rejection.
Industrial Process Control
Ideal for 4-20mA loop monitoring and PLC analog input modules requiring single-cycle settling and high DC accuracy.
Analog Input Modules
The 11 multifunction analog inputs and internal fault monitors allow for robust, multi-channel data acquisition systems.

Key Specifications

Features PGA, Temperature Sensor
Input Type Differential, Single Ended
Architecture Sigma-Delta
Configuration MUX-PGA-ADC
Mounting Type Surface Mount
Data Interface SPI
Number of Bits 32
Package / Case 28-TSSOP (0.173", 4.40mm Width)
Reference Type External, Internal
Number of Inputs 5, 10
Operating Temperature -40degC ~ 125degC
Supplier Device Package 28-TSSOP
Number of A/D Converters 1
Voltage - Supply, Analog 5V
Voltage - Supply, Digital 2.7V ~ 5.25V
Sampling Rate (Per Second) 38k

Getting Started

Evaluation is typically performed using the ADS1263EVM-PDK, which includes a motherboard and software for performance analysis. The device is controlled via a standard 4-wire SPI interface and requires a 2.7V to 5.25V digital supply. For precision designs, ensure the analog and digital grounds are properly partitioned and use a low-noise external reference if the internal 2.5V reference does not meet specific drift requirements.

ADS1263 Family

Also available as: ADS1263IPWR

Also Consider

ADS1262IPW TITexas Instruments - Similar 32-bit performance and pinout but omits the auxiliary 24-bit ADC for cost-sensitive designs.
AD7177-2 Analog Devices - A 32-bit alternative with faster throughput rates and integrated precision output buffers.