AD7880BRZ-REEL

Overview

The AD7880BRZ-REEL is a monolithic 12-bit analog-to-digital converter (ADC) fabricated in Linear Compatible CMOS (LC2MOS) technology. It operates from a single +5 V supply and features a throughput rate of 66 kHz with a conversion time of 12 μs and an acquisition time of 3 μs. The device includes an on-chip track/hold amplifier, successive-approximation logic, and three-state digital outputs. Key electrical parameters include a signal-to-noise ratio (SNR) of 70 dB minimum, integral nonlinearity (INL) of ±1 LSB maximum, and differential nonlinearity (DNL) of ±1 LSB maximum. Power consumption is typically 25 mW in normal mode and 2 mW in power save mode. It is housed in a 24-lead SOIC package.

Feature Summary

• Supports multiple input ranges including 0 to VREF, 0 to 2VREF, and ±VREF using a single +5 V supply.
• Features low power operation with a dedicated power save mode for battery-powered applications.
• Provides fast data access times suitable for direct interfacing with microprocessors and DSPs.

Applications

• Battery powered portable systems
• Digital signal processing
• Speech recognition and synthesis
• High speed modems

Procurement Notes

Verify the specific suffix REEL indicates tape and reel packaging when sourcing components. Confirm that the B version meets the required accuracy specifications regarding full-scale error and bipolar zero error limits. Ensure the operating temperature range aligns with industrial requirements of -40°C to +85°C. Cross-reference the datasheet revision to confirm pinout and timing characteristics match the design implementation.

Selection Notes

Select this component for applications requiring high-speed 12-bit conversion with low power dissipation. Consider the available input voltage ranges when designing the front-end circuitry. Evaluate the interface requirements against standard microprocessor control signals such as CS, RD, and CONVST. Verify that the external clock frequency supports the specified 66 kHz throughput rate without degrading linearity performance.

Part Context

This part belongs to the AD7880 series of single-supply 12-bit sampling ADCs. The BRZ designation identifies the industrial temperature grade variant packaged in a small outline integrated circuit (SOIC). The series is designed for applications demanding moderate resolution with fast conversion speeds and minimal external component count.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the verified documentation. Designers should consult official Analog Devices resources for current cross-reference information or equivalent product recommendations.