AD7893ARZ-3REEL

Overview

The AD7893ARZ-3REEL is a 12-bit successive approximation analog-to-digital converter (ADC) housed in an 8-pin SOIC package. It operates from a single +5 V supply and consumes 25 mW typical power. The device features an on-chip track/hold amplifier, internal clock, and high-speed serial interface. The AD7893-3 variant supports a bipolar input voltage range of ±2.5 V with two's complement output coding. Key performance metrics include a maximum conversion time of 6 μs, a throughput rate up to 117 kHz, and a signal-to-noise ratio of 70 dB minimum at a 10 kHz input frequency.

Feature Summary

• Integrated on-chip track/hold amplifier for accurate signal acquisition
• High-speed two-wire serial interface for simplified microcontroller connection
• Single +5 V supply operation with low power consumption
• Internal laser-trimmed clock oscillator eliminates external timing components

Applications

• Battery-powered portable instrumentation systems
• Industrial process control data acquisition
• Microcontroller-based measurement interfaces

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging when sourcing. Confirm the '-3' designation matches the required ±2.5 V bipolar input range for the application. Ensure the operating temperature range aligns with the commercial grade specifications provided in the datasheet.

Selection Notes

Select this component for applications requiring a compact 8-pin solution with integrated signal conditioning. The AD7893-3 is appropriate for signals centered around ground within a ±2.5 V window. Consider the 117 kHz throughput limit when designing system timing constraints relative to the CONVST and SCLK signals.

Part Context

This part belongs to the AD7893 family of fast 12-bit ADCs manufactured by Analog Devices. The series includes variants with different input ranges such as ±10 V, 0 to +5 V, and 0 to +2.5 V. All variants share the same 8-pin package footprint and core SAR architecture, differing primarily in internal signal scaling networks.

Replacement Considerations

The AD7894 is a pin-compatible 14-bit upgrade option offering higher resolution in the same package.