ADS7844E/2K5

Analog To Digital Converters (ADC) Overview

The ADS7844E/2K5 is a 12-bit, 8-channel serial output sampling analog-to-digital converter manufactured by Texas Instruments. It utilizes a successive approximation register (SAR) architecture and supports pseudo-differential or single-ended input types. The device operates with an analog supply voltage range of 2.7 V to 5.25 V and a digital supply voltage range of 1.9 V to 5.5 V. It achieves a maximum sampling rate of 200 kS/s with a typical power consumption of 1.8 mW. Key performance metrics include a differential nonlinearity (DNL) of +/- 0.8 LSB, integral nonlinearity (INL) of +/- 2 LSB, and a signal-to-noise and distortion ratio (SINAD) of 72 dB. The component is housed in a QSOP-20 package and functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an onboard multiplexer for efficient multi-channel data acquisition
• Supports synchronous serial interface compatible with standard SPI protocols
• Designed for low-power operation suitable for battery-driven applications

Analog To Digital Converters (ADC) Applications

• Battery-operated personal digital assistants
• Portable multichannel data loggers
• General-purpose measurement equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '2K5' against the manufacturer's current datasheet to confirm packaging details, as this often denotes tape-and-reel quantities. Ensure the QSOP-20 package variant matches the design requirements. Cross-reference the revision history for any updates to electrical characteristics or pin definitions before finalizing procurement specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-channel ADC with 12-bit resolution and 200 kSPS throughput is required. It is appropriate for systems needing external reference configurations and low power dissipation. Verify that the input voltage ranges align with the sensor outputs and that the serial interface timing meets the host controller's capabilities.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS7844 family of high-speed, low-power analog-to-digital converters. It shares architectural similarities with other devices in the series but is distinguished by its 8-channel configuration and specific packaging options. The device is designed to interface directly with microcontrollers and digital signal processors in embedded systems.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7844N is a pin-compatible alternative within the same family. Confirm functional equivalence regarding electrical parameters and interface compatibility before substitution.