ADS7828E/2K5

Analog To Digital Converters (ADC) Overview

The ADS7828E/2K5 is a 12-bit successive approximation register (SAR) analog-to-digital converter featuring an internal reference and I2C interface. It integrates an 8-channel multiplexer supporting pseudo-differential or single-ended inputs. The device operates on a single supply voltage ranging from 2.7 V to 5.25 V for both analog and digital domains. It achieves a sampling rate of 50 kSPS with a signal-to-noise ratio of 72 dB. Differential nonlinearity is specified at +/- 1 LSB, while integral nonlinearity is +/- 2 LSB. Power consumption is 675 uW in active mode and drops below 1 uW in power-down mode. It is housed in a 16-pin TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel analog multiplexer with a sample-and-hold circuit for multi-point data acquisition.
• Includes an internal 2.5 V reference voltage source to reduce external component count.
• Supports standard and fast-mode I2C serial communication for simplified microcontroller interfacing.
• Features automatic power-down modes triggered by the I2C bus to minimize energy consumption.

Analog To Digital Converters (ADC) Applications

• Battery-powered portable instrumentation
• Industrial process control systems
• Medical monitoring equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the revision level matches the design requirements. Confirm RoHS compliance status through official documentation before procurement. Cross-reference the distributor part number with the Texas Instruments manufacturer number to avoid counterfeit components.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-channel input configuration is required within a compact surface-mount footprint. The internal reference simplifies board layout compared to external reference designs. Verify that the I2C clock speed requirements align with the device's maximum operating frequency. Consider the SAR architecture latency if real-time processing constraints are critical to the system design.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS782x family of low-power, 12-bit ADCs. It shares architectural similarities with the ADS7822 and ADS7824 but distinguishes itself through its 8-channel multiplexer capability. The E variant denotes extended temperature performance suitable for industrial environments. The /2K5 suffix indicates a cut-tape packaging format for prototyping and low-volume production.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7828E/250 serves as a reel-based alternative offering identical electrical characteristics. Other family members like the ADS7822 provide similar functionality with fewer channels. Verify pin compatibility and software register maps when substituting with related devices from the same product line.