AD7899ARS-1REEL

Overview

The AD7899ARS-1REEL is a 14-bit successive-approximation analog-to-digital converter (ADC) from Analog Devices, packaged in a 28-lead Shrink Small Outline (SSOP). It operates on a single 5 V supply and delivers a maximum throughput rate of 400 kSPS with a conversion time of 2.2 µs. The device features an internal 2.5 V reference and accepts bipolar input ranges of ±5 V or ±10 V. It includes overvoltage protection on analog inputs and supports both internal clock oscillation and external clocking via the CLKIN pin.

Feature Summary

• High-speed parallel interface compatible with 3 V and 5 V logic levels
• Integrated track/hold amplifier with 0.3 µs acquisition time
• Overvoltage protection allows analog inputs to exceed range limits without damage
• Power-saving standby mode accessible via the STBY pin

Applications

• Industrial process control systems requiring high accuracy
• Portable instrumentation powered by single supplies
• Data acquisition systems interfacing with microprocessors
• Signal conditioning circuits for sensor data digitization

Procurement Notes

Verify the specific suffix REEL indicates tape-and-reel packaging when sourcing components. Confirm that the ARS designation corresponds to the SSOP package variant rather than the standard SOIC. Ensure the -1 suffix matches the required ±5 V or ±10 V input range configuration for the target application design.

Selection Notes

Select this component when a 14-bit resolution and 400 kSPS speed are required within a single-supply architecture. Choose the -1 version specifically for bipolar input requirements. Consider the SSOP package if board space constraints favor the shrink outline form factor over the standard SOIC footprint.

Part Context

This part belongs to the AD7899 family of fast, low-power ADCs. The -1 suffix denotes the bipolar input range variant, while the ARS suffix specifies the Shrink Small Outline Package. The REEL suffix indicates bulk tape-and-reel shipping for automated assembly processes.

Replacement Considerations

Direct replacements include other AD7899 variants such as AD7899AR-1REEL for standard SOIC packaging or AD7899SR-1REEL for extended temperature ranges. Verify pin compatibility and input range specifications before substituting.