AD7893ARZ-5

Overview

The AD7893ARZ-5 is a 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It operates from a single +5 V supply and features an on-chip track/hold amplifier, internal clock, and high-speed serial interface. The device accepts a unipolar analog input range of 0 V to +5 V with a typical power dissipation of 25 mW. Key electrical specifications include a maximum conversion time of 6 μs, a throughput rate up to 117 kHz, and a signal-to-noise ratio of 70 dB. It utilizes straight binary output coding and requires an external 2.5 V reference voltage.

Feature Summary

• Integrates a 12-bit ADC, track/hold amplifier, and control logic within an 8-pin package for space efficiency.
• Operates from a single +5 V supply with low power consumption suitable for portable applications.
• Features a two-wire high-speed serial interface for simplified microcontroller connectivity.

Applications

• Battery-powered measurement systems
• Portable data acquisition equipment
• Industrial process control monitoring

Procurement Notes

Verify the specific suffix '5' confirms the 0 V to +5 V input range and straight binary coding. Confirm the 'RZ' designation indicates the SOIC-8 plastic package and RoHS compliance status. Ensure the operating temperature range matches the 'A' version specification of -40 °C to +85 °C for your application requirements.

Selection Notes

Select this component when a single-supply 12-bit resolution is required with minimal board space. The 0 V to +5 V input range eliminates the need for external signal conditioning for standard unipolar sensors. Consider the 6 μs conversion time and 117 kHz throughput limits against system speed requirements.

Part Context

This part belongs to the AD7893 family of fast 12-bit ADCs. The 'ARZ' suffix denotes the commercial temperature grade (-40 °C to +85 °C) and the SOIC-8 plastic package. Other variants in the series include bipolar input ranges (AD7893-10, AD7893-3) and extended temperature options (AD7893SQ).

Replacement Considerations

The AD7894 is a pin-compatible upgrade offering 14-bit resolution. Verify if the increased resolution meets system needs without requiring schematic changes.