AD7893ARZ-3REEL7

Overview

The AD7893ARZ-3REEL7 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 a high-speed serial interface. It accepts a bipolar input voltage range of ±2.5 V with an external reference input. 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 25°C.

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
• Medical equipment signal conditioning
• Automotive sensor interfaces

Procurement Notes

Verify the specific suffix 'REEL7' indicates tape-and-reel packaging when sourcing. Confirm the '-3' designation matches the required ±2.5 V input range for your application. Ensure the operating temperature range aligns with the 'A' version specifications (-40°C to +85°C). Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain consistent with your design requirements.

Selection Notes

Select this component if a compact 8-pin solution is required for 12-bit precision applications. The AD7893ARZ-3 variant is specifically designed for bipolar signals within the ±2.5 V range. Consider the 117 kHz throughput limit when designing system timing. Verify that the external reference voltage stability meets the gain error requirements, as the part relies on an external REF IN pin rather than an internal reference.

Part Context

This component belongs to the AD7893 family of fast, low-power ADCs from Analog Devices. The family includes variants with different input ranges, such as the AD7893-10 for ±10 V inputs and the AD7893-5 for unipolar 0 V to +5 V inputs. All variants share the same 8-pin package and core architecture but differ in internal signal scaling networks to accommodate their specific voltage ranges.

Replacement Considerations

Public confirmed substitute part numbers: AD7893ARZ-10REEL7, AD7893ARZ-5REEL7.