AD7899ARSZ-2REEL

Overview

The AD7899ARSZ-2REEL is a 14-bit successive-approximation analog-to-digital converter (ADC) from Analog Devices, packaged in a 28-lead Shrink Small Outline Package (SSOP). It operates on a single 5 V supply and achieves a maximum throughput rate of 400 kSPS with a conversion time of 2.2 µs. This specific variant supports unipolar input voltage ranges of 0 V to 2.5 V or 0 V to 5 V. Key electrical parameters include a typical power dissipation of 80 mW in normal mode and 100 µW in standby mode. The device features an internal 2.5 V reference, a track/hold amplifier with 0.3 µs acquisition time, and overvoltage protection on analog inputs.

Feature Summary

• Unipolar Input Range Configuration
• High-Speed Parallel Interface
• Integrated Signal Conditioning

Applications

• Industrial Process Control Systems
• Portable Data Acquisition Equipment
• Battery-Powered Instrumentation

Procurement Notes

Verify the ordering suffix REEL indicates tape-and-reel packaging rather than tube packaging. Confirm the -2 suffix corresponds to the 0 V to 5 V or 0 V to 2.5 V unipolar input range specification. Ensure the ARZ designation matches the required commercial temperature range of –40°C to +85°C for the application environment.

Selection Notes

Select this component when a single-supply 14-bit ADC with high-speed parallel output is required for unipolar signals. The AD7899-2 variant is distinct from the -1 and -3 versions due to its specific input range capabilities. Consider the 80 mW power consumption and SSOP package dimensions during thermal and layout planning.

Part Context

The AD7899 series comprises fast, low-power 14-bit ADCs designed for single-supply operation. The AD7899-2 specifically addresses applications requiring unipolar signal acquisition, distinguishing it from the bipolar ±10 V/±5 V (-1) and ±2.5 V (-3) variants. All versions share the same core architecture, including the SAR engine and parallel interface.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.