ADS1216Y/2K

Overview

The ADS1216Y/2K is a 24-bit analog-to-digital converter (ADC) from Texas Instruments, housed in a 48-TQFP package. It features an 8-channel multiplexer with differential inputs and a sigma-delta architecture. The device supports SPI interface communication and offers a sampling rate of up to 780 samples per second. Operating voltages for both analog and digital supplies range from 2.7 V to 5.25 V. Key performance metrics include a differential nonlinearity (DNL) of ±1 LSB and integral nonlinearity (INL) of ±0.0015% FSR. Power consumption is specified at 600 µW, with a maximum power dissipation of 2.5 mW. The component operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated programmable gain amplifier (PGA) for signal conditioning
• Built-in excitation current sources (iDACs) for sensor biasing
• On-chip oscillator and general-purpose I/O (GPIO) capabilities
• Effective 50/60 Hz line frequency rejection

Applications

• Industrial process control systems requiring high-resolution data acquisition
• Weigh scales and load cell measurement applications
• Medical instrumentation such as ECG and physiological monitoring devices
• Precision thermocouple and RTD temperature sensing interfaces

Procurement Notes

Verify the specific suffix 'Y/2K' against the manufacturer's latest datasheet to confirm packaging configuration and reel specifications. Ensure compatibility with system voltage levels and interface timing requirements before integration. Check for RoHS compliance status and moisture sensitivity level (MSL) ratings relevant to your assembly process. Confirm that the 48-TQFP footprint matches your PCB design guidelines.

Selection Notes

Select this component when a single ADC channel with multiple differential inputs is required. The integrated PGA reduces external amplifier needs. Consider the 780 S/s speed limit for application bandwidth constraints. Evaluate the need for internal iDACs if driving active sensors. Compare pin count and package size against alternative solutions if space is limited.

Part Context

This part belongs to the ADS1216 family of precision ADCs. It shares architectural similarities with the ADS1217 and ADS1218 but differs in channel count and specific feature sets. Application reports such as SBAA107 discuss gain calibration techniques applicable to this device family. It serves as a bridge between low-level analog signals and digital processing units in embedded systems.

Replacement Considerations

Direct substitutes may include other members of the ADS121x series, such as the ADS1217 or ADS1218, depending on channel and feature requirements. Verify pinout compatibility and register mapping before substitution. Alternative packages like the Y variant without the /2K suffix may be available but require re-verification of packaging details.