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

The ADS1263IPW is a high-precision, low-noise analog-to-digital converter designed for demanding industrial, instrumentation, and sensor measurement applications. Manufactured by Texas Instruments, this device integrates a delta-sigma ADC architecture with programmable gain amplification, precision voltage reference support, sensor biasing functions, and extensive diagnostic capabilities. It is optimized for applications requiring extremely high resolution and accuracy when measuring low-level analog signals.

The device supports direct interfacing to bridge sensors, thermocouples, RTDs, pressure sensors, strain gauges, and other precision transducers. Integrated system monitoring and fault detection features simplify implementation in safety-critical and high-reliability systems. Flexible input multiplexing and multiple data-rate options allow the converter to be used across a wide range of precision data acquisition applications.

The ADS1263IPW communicates through a standard SPI-compatible serial interface and operates from low-voltage analog and digital supplies. The device is packaged in a thermally efficient TSSOP package suitable for compact embedded system designs.

Electrical Characteristics

The converter utilizes a delta-sigma ADC core with extremely high effective resolution and low input-referred noise performance. It supports differential and single-ended analog input configurations with programmable gain settings for low-level sensor measurements.

The integrated programmable gain amplifier supports multiple gain selections for direct amplification of small analog signals. The converter includes internal offset and gain calibration functions to improve system-level measurement accuracy.

The device provides low drift characteristics and high common-mode rejection performance suitable for precision industrial environments.

Analog Features

The converter supports multiple analog input channels through an integrated input multiplexer. Internal sensor bias current sources are available for RTD and resistive sensor excitation applications.

Integrated digital filtering options allow optimization between noise performance and conversion speed. Simultaneous rejection of power-line interference frequencies is supported for industrial measurement systems.

The device includes internal temperature sensing and diagnostic monitoring functions for enhanced system reliability.

Digital Interface

Communication is implemented through an SPI-compatible serial interface supporting flexible host controller integration. The interface supports command-based register access, data readback, and configuration management.

Programmable data rates allow balancing between throughput and precision requirements.

Power Requirements

The device operates from separate analog and digital supply rails to improve noise isolation and measurement accuracy. Low-power operating modes are supported for energy-sensitive applications.

Protection and Diagnostics

Integrated fault detection and monitoring functions include sensor open-circuit detection, reference monitoring, supply monitoring, and internal self-test capability. These features improve reliability in industrial and safety-oriented systems.

Package Information

The ADS1263IPW is supplied in a TSSOP package with fine-pitch lead spacing suitable for high-density PCB layouts and automated assembly processes.

Typical Applications

Industrial process control systems

Precision data acquisition equipment

Temperature measurement systems

Pressure and bridge sensor interfaces

Weigh scale and load-cell instrumentation

Laboratory and test instrumentation

Medical instrumentation

Energy monitoring and metering systems

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