AD7896ANZ

Overview

The AD7896ANZ is a 12-bit successive approximation register (SAR) analog-to-digital converter housed in an 8-lead SOIC package. It operates from a single 2.7 V to 5.5 V supply, consuming 9 mW typical power. The device integrates an on-chip track-and-hold amplifier and generates its own clock, utilizing the VDD input as the reference voltage. It supports a throughput rate of 100 kS/s with an 8 µs conversion time in high-speed mode. The serial interface requires only two wires for data output.

Feature Summary

• Integrates a 12-bit SAR ADC, track-and-hold amplifier, and internal clock oscillator within an 8-lead package.
• Operates from a single 2.7 V to 5.5 V supply with VDD serving as the internal reference.
• Features a high-speed 2-wire serial interface compatible with standard microcontrollers.
• Includes an automatic power-down mode that activates after conversion completion.

Applications

• Battery-powered portable instrumentation
• Industrial process control systems
• Data acquisition subsystems

Procurement Notes

Verify the specific suffix ANZ indicates the lead-free RoHS-compliant variant in the SOIC-8 package. Confirm the industrial temperature range (-40°C to +85°C) matches the application requirements. Ensure the ordering code corresponds to tube packaging rather than reel formats when sourcing bulk quantities.

Selection Notes

Select this component for applications requiring a compact solution with integrated reference and clock functions. The single-supply operation simplifies power design compared to dual-supply alternatives. Consider the 100 kHz throughput limit when designing system timing constraints relative to the serial clock frequency.

Part Context

The AD7896 belongs to Analog Devices' family of fast, low-power sampling ADCs. The ANZ suffix denotes the non-lead-containing version compliant with environmental directives. This part serves as a cost-effective alternative to discrete ADC solutions by consolidating multiple functional blocks into a small footprint.

Replacement Considerations

Direct replacements include the AD7896ARZ and AD7896BRZ variants which share identical pinouts and electrical characteristics but differ in temperature ranges or initial accuracy specifications.