ADS1258MPHPTEP

Overview

The ADS1258MPHPTEP is a 16-channel, 24-bit analog-to-digital converter (ADC) utilizing sigma-delta architecture. It features a flexible input multiplexer supporting eight differential or sixteen single-ended inputs with a full-scale differential range of 5 V and a true bipolar range of ±2.5 V. The device operates at a fixed channel sampling rate of 125 kS/s and an automatic scan rate of 23.7 kS/s per channel. It includes an internal oscillator, GPIOs, and a temperature sensor. Power consumption is 42 mW. The component is housed in a 48-lead HTQFP package and supports an analog supply voltage of 4.75 V to 5.25 V and a digital supply voltage of 2.7 V to 5.25 V.

Feature Summary

• Integrated system monitoring registers for power supply, temperature, reference voltage, gain, and offset data readback.
• Onboard PLL generates a system clock from a 32.768 kHz crystal or accepts an external clock source.
• Programmable sensor bias current sources enable sensor biasing and integrity verification.

Applications

• Medical equipment
• Aerospace systems
• Process control instrumentation

Procurement Notes

Verify the specific suffix 'EP' indicates extended product lifecycle and qualification status. Confirm the HTQFP-48 package matches the design footprint. Check export documentation requirements as indicated by distributor listings. Ensure the operating temperature range aligns with the -55°C to +125°C specification for military-grade applications.

Selection Notes

Select this model when high reliability and extended lifecycle are required for multi-channel signal acquisition. The 24-bit resolution and low noise performance suit precision measurement tasks. Consider the 125 kS/s fixed rate for single-channel speed or 23.7 kS/s per channel for multi-channel scanning. Verify interface compatibility with SPI controllers.

Part Context

This part belongs to the ADS1258 family of high-precision ADCs. The 'M' denotes the military temperature range (-55°C to +125°C), while 'E' signifies enhanced product reliability and lifecycle support. The 'P' indicates the HTQFP-48 package type. This variant is distinct from industrial grade parts which typically operate within a narrower temperature range.

Replacement Considerations

ADS1258IPHPREP is a verified substitute part number for the ADS1258MPHPTEP. Both share the same HTQFP-48 package and core functionality. Verify that the industrial temperature rating of the IPHPREP variant meets the application's thermal requirements before substitution.