AD7899ARZ-1REEL

Overview

The AD7899ARZ-1REEL is a single-channel, 14-bit successive-approximation analog-to-digital converter (ADC) from Analog Devices. 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 supports input ranges of ±10 V or ±5 V. It utilizes a high-speed parallel interface compatible with 3 V and 5 V logic levels via the VDRIVE pin. The component is housed in a 28-lead SOIC package and includes overvoltage protection on analog inputs.

Feature Summary

• Integrated track/hold amplifier with fast acquisition time for accurate signal sampling
• High-speed parallel data bus interface supporting direct connection to microprocessors
• Internal laser-trimmed clock oscillator with provision for external clock control
• Overvoltage protection on analog inputs prevents damage during voltage excursions

Applications

• Industrial process control systems requiring high-resolution data acquisition
• Portable instrumentation powered by single supply voltages
• Digital signal processing interfaces needing fast parallel data transfer
• Medical equipment utilizing bipolar input signal ranges

Procurement Notes

Verify the specific suffix '1' corresponds to the ±10 V or ±5 V input range variant required for the application. Confirm the REEL packaging designation matches automated assembly needs. Ensure the operating temperature range aligns with system environmental specifications before finalizing procurement orders.

Selection Notes

Select this model when a 14-bit resolution and 400 kSPS speed are necessary within a single-supply architecture. Choose the -1 suffix version specifically for bipolar input requirements. Consider the parallel interface complexity against available microprocessor GPIO resources compared to serial alternatives.

Part Context

This component belongs to the AD7899 family of 14-bit ADCs manufactured by Analog Devices. The family includes variants with different input ranges and packages. The ARZ-1REEL designation indicates the commercial temperature grade, lead-free RoHS compliant status, and reel packaging format for surface-mount assembly.

Replacement Considerations

Direct pin-compatible replacements within the same family include the AD7899BR-1 for tighter accuracy specifications. Other series members like the AD7896 offer lower resolution but serial interfaces. Verify functional equivalence regarding input ranges and timing characteristics when substituting.