ADS1218Y/250

Overview

The ADS1218Y/250 is an 8-channel, 24-bit analog-to-digital converter (ADC) utilizing sigma-delta architecture. It features a TQFP-48 package and supports SPI interface communication. The device operates with differential inputs and provides a sampling rate of up to 780 samples per second. Power supply requirements range from 2.7 V to 5.25 V for both analog and digital domains. It includes integrated excitation current sources, a programmable gain amplifier, and on-chip flash memory for configuration storage. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated flash memory for non-volatile configuration storage
• Built-in excitation current sources for sensor biasing
• Programmable gain amplifier with internal reference options
• High-resolution 24-bit data conversion capability

Applications

• Industrial process control systems requiring high precision
• Weigh scales and load cell measurement applications
• Medical instrumentation and patient monitoring devices
• Strain gauge and pressure sensor interfaces

Procurement Notes

Verify the specific suffix Y/250 against the manufacturer's latest datasheet to confirm package type and operating temperature grade. Ensure compatibility with existing SPI bus protocols and voltage levels in the target design. Check for any recent product change notices or end-of-life announcements prior to finalizing procurement plans.

Selection Notes

Select this component when high channel count and resolution are required without external multiplexers. Consider the integrated flash feature if system reconfiguration flexibility is needed. Evaluate power consumption constraints as the device draws current proportional to the data rate. Compare performance metrics against similar ADCs if lower channel counts suffice for the application.

Part Context

This part belongs to the ADS121x family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS1216 but adds onboard flash memory for enhanced configurability. The series is designed for applications demanding high accuracy and multiple input channels in a compact form factor.

Replacement Considerations

ADS1216Y/250 serves as a functional substitute lacking the flash memory feature. ADS1217Y/250 offers similar specifications with potential differences in pinout or feature sets. Verify electrical compatibility and software driver support before implementing any cross-model replacements.