ADS1253E/2K5

Overview

The ADS1253E/2K5 is a 24-bit analog-to-digital converter (ADC) from Texas Instruments, utilizing sigma-delta architecture. It features four differential input channels with an integrated multiplexer and operates at sampling rates up to 20 kS/s. The device supports both I2C and SPI digital interfaces for data communication. It requires external reference voltage and functions within an analog supply range of 4.75 V to 5.25 V and a digital supply range of 1.8 V to 3.6 V. Designed for surface-mount installation, it is housed in a 16-SSOP package and maintains operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a programmable gain amplifier and input buffer to enhance signal conditioning capabilities.
• Provides high-resolution 24-bit conversion with low power consumption suitable for battery-operated systems.
• Includes built-in 50 Hz and 60 Hz rejection filters to minimize noise interference.

Applications

• Industrial process control systems requiring precise measurement.
• Portable instrumentation and handheld devices.
• Weigh scales and load cell interfaces.

Procurement Notes

Verify the specific suffix 'E/2K5' against official datasheets to confirm the tape-and-reel packaging quantity and RoHS compliance status. Ensure the ordering part number matches the required package type and operating temperature grade before finalizing procurement orders.

Selection Notes

Select this component when a single ADC channel count is insufficient but multi-channel multiplexing is acceptable. Compare performance metrics such as noise density and settling time against other members of the ADS125x family to ensure compatibility with system bandwidth requirements.

Part Context

This model belongs to the ADS125x series of precision ADCs. It shares architectural similarities with the ADS1251 and ADS1252 but distinguishes itself by offering four input channels instead of one or two. This configuration allows for simplified board layouts in applications requiring multiple sensor inputs without increasing component count significantly.

Replacement Considerations

Direct pin-compatible alternatives within the same family include the ADS1251U/2K5 and ADS1252U/2K5, though these offer fewer input channels. Verify interface compatibility and pin assignments before substituting with non-TI components.