AD7822BRUZ-REEL

Overview

The AD7822BRUZ-REEL is an 8-bit, 4-channel analog-to-digital converter from the AD7825 series. It features a half-flash architecture with a maximum throughput of 2 MSPS and a conversion time of 420 ns. The device operates on a single supply voltage ranging from 2.7 V to 3.3 V or 4.5 V to 5.5 V. Key specifications include a signal-to-noise ratio of 48 dB minimum, integral nonlinearity of ±0.75 LSB, and differential nonlinearity of ±0.75 LSB. Power consumption is 36 mW maximum in normal operation and 5 μA in power-down mode. It utilizes a flexible parallel interface and includes an on-chip 2.5 V reference.

Feature Summary

• Integrates a track-and-hold amplifier and an on-chip 2.5 V reference for simplified system design.
• Features automatic power-down at the end of conversion to optimize power efficiency.
• Supports channel selection without writing to the part via dedicated address inputs.
• Includes an adjustable input offset capability through the VMID pin.

Applications

• Data acquisition systems
• DSP front ends
• Disk drives
• Mobile communication systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure compatibility with the required operating temperature range and supply voltage conditions before finalizing procurement orders.

Selection Notes

Select this component when a high-speed, multi-channel ADC with a parallel interface is required. Consider the 4-channel configuration of the AD7825 variant over the single-channel AD7822 if multiple inputs are needed. Verify that the microprocessor interface supports the necessary control signals like CONVST and EOC.

Part Context

This component belongs to the AD7822/AD7825/AD7829 family of sampling ADCs manufactured by Analog Devices. These devices share a common half-flash architecture and operational characteristics, differing primarily in the number of analog input channels available (1, 4, or 8).

Replacement Considerations

Direct replacements within the same family include the AD7822BRUZ for single-channel applications or the AD7829BRUZ for eight-channel requirements. Verify pinout compatibility and channel count before substituting.