ADS1288IRHBR

Analog To Digital Converters (ADC) Overview

The Texas Instruments ADS1288IRHBR is a 32-bit, low-power delta-sigma analog-to-digital converter (ADC) designed for seismic applications. It features two differential input channels with an integrated programmable gain amplifier (PGA) offering gains from 1 to 64, and a unity-gain buffer mode. The device supports data rates ranging from 125 SPS to 2000 SPS and includes a flexible digital filter system comprising sinc, FIR, and IIR filters. Power consumption is typically 5 mW in PGA operation and 3 mW in buffer operation at 3.3 V. It operates over an ambient temperature range of –40°C to +85°C and is housed in a 32-pin, 5 mm × 5 mm VQFN package.

Analog To Digital Converters (ADC) Feature Summary

• Integrated dual-channel multiplexer with selectable PGA or buffer modes
• Flexible digital filtering with selectable linear or minimum phase responses
• Built-in clock error compensation via sample rate converter
• On-chip offset and gain calibration capabilities

Analog To Digital Converters (ADC) Applications

• Energy exploration equipment
• Passive seismic monitoring systems
• Earth sciences and geology instrumentation
• Precision instrumentation requiring low power

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific IRHBR suffix against the manufacturer's current orderable information to confirm the reel packaging configuration. Ensure that the required voltage reference components and external capacitors match the datasheet recommendations for stable operation within the specified electrical limits.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high-resolution seismic data acquisition is required alongside strict power constraints. The integrated PGA eliminates the need for external amplifiers for direct geophone connection. Verify that the required data rate falls within the 125 SPS to 2000 SPS operational window and that the 32-bit resolution meets the dynamic range requirements.

Analog To Digital Converters (ADC) Part Context

The ADS1288 belongs to the Texas Instruments ADS128x family of precision ADCs tailored for seismology. This series emphasizes low noise and low power consumption to support battery-operated field deployment. The device integrates specialized features like clock error compensation and multi-stage digital filtering to handle the specific signal processing demands of seismic sensors.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1288IPWR is a pin-compatible alternative available in a TSSOP-28 package. Designers must evaluate thermal performance differences between the VQFN and TSSOP packages and verify that the pin count reduction does not impact existing board layout constraints.