ADS7828E/2K5G4

Analog To Digital Converters (ADC) Overview

The ADS7828E/2K5G4 is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features an internal multiplexer supporting eight single-ended or four pseudo-differential input channels. The device operates with a sampling rate of 50 kSPS and communicates via an I2C-compatible serial interface. It supports dual power supplies ranging from 2.7 V to 5.25 V for both analog and digital domains. Key performance metrics include a signal-to-noise ratio of 72 dB, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±2 LSB. Power consumption is specified at 675 µW during operation and 5 mW maximum dissipation. The component is housed in a 16-pin TSSOP package and functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel analog multiplexer with a built-in 12-bit SAR ADC core for multi-point data acquisition.
• Supports flexible input configurations including single-ended and pseudo-differential modes through a standard I2C interface.
• Features an internal voltage reference option alongside external reference capability to simplify circuit design.
• Automatically transitions to low-power standby mode following conversion cycles to minimize energy usage.

Analog To Digital Converters (ADC) Applications

• Battery-powered portable instrumentation and handheld meters
• Industrial process control systems requiring multi-channel sensor monitoring
• Medical equipment involving physiological signal acquisition
• Data acquisition modules in automated testing environments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the /2K5 designation corresponds to the standard tape-and-reel packaging quantity of 2,500 units. Ensure the ordering part number matches the exact electrical grade and package variant required for the target application to avoid compatibility issues with existing board layouts.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of moderate speed and high channel count is required without external multiplexers. The I2C interface reduces pin count compared to SPI alternatives, making it suitable for space-constrained designs. Consider the internal reference noise characteristics if high precision is needed, or opt for an external reference source for improved accuracy in noisy environments.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADS7828 family of micro-power ADCs from Texas Instruments. It shares architectural similarities with the ADS7823 and ADS7822 but offers distinct channel counts and interface options. The E/2K5G4 variant specifically denotes the commercial temperature range, TSSOP-16 package, and reel packaging format within the broader product line.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7828EB/2K5G4 is a documented similar part within the same family, potentially differing in specific electrical grades or revision levels. Verify pinout compatibility and parameter equivalence before substitution. Other family members like the ADS7822 offer different channel counts or interface types and are not direct pin-for-pin replacements.