AD7982BCPZ-RL7

Overview

The AD7982BCPZ-RL7 is an 18-bit, 1 MSPS PulSAR analog-to-digital converter manufactured by Analog Devices Inc. It features a true differential analog input range of ±VREF and operates from a single 2.5 V supply with logic interfaces supporting 1.8 V to 5 V. The device achieves a typical Signal-to-Noise Ratio (SNR) of 98 dB and dynamic range of 99 dB at a 5 V reference. Power consumption is 4 mW at 1 MSPS using only the VDD supply, scaling linearly with throughput. It utilizes a versatile serial interface compatible with SPI, QSPI, Microwire, and DSP standards.

Feature Summary

• Zero latency architecture with immediate data availability after conversion completion
• Daisy-chain capability allowing multiple ADCs on a single bus via the SDI input
• Flexible digital interface supporting 1.8 V, 2.5 V, 3 V, and 5 V logic levels through a separate VIO supply
• Low power dissipation with standby current of 0.35 μA and operation down to 70 μW at 10 kSPS

Applications

• Automated test equipment
• Data acquisition systems
• Medical instruments
• Machine automation

Procurement Notes

Verify the specific suffix BCPZ-RL7 against the manufacturer's ordering guide to confirm package type and reel specifications. Ensure the external reference voltage falls within the 2.4 V to 5.1 V range for optimal performance. Confirm that the host system supports the required serial interface modes and voltage levels for VIO.

Selection Notes

Select this component when high resolution and low power are critical requirements. The AD7982 is suitable for applications requiring zero latency and daisy-chaining capabilities. Consider the LFCSP package for space-constrained designs or MSOP for standard surface mount processes. Verify compatibility with the driving amplifier and reference voltage source.

Part Context

The AD7982 belongs to the PulSAR family of precision SAR ADCs from Analog Devices. It offers pin-for-pin compatibility with the 16-bit AD7980, facilitating design upgrades. The device is designed for applications demanding high accuracy and low power consumption in a compact footprint.

Replacement Considerations

The AD7980 is a pin-compatible alternative offering 16-bit resolution. For higher resolution needs, consider the AD7986 (18-bit, 20-lead). Check the ordering guide for exact package and temperature range variations.