AD7982BCPZ-RL

Overview

The AD7982BCPZ-RL is an 18-bit, 1 MSPS PulSAR analog-to-digital converter (ADC) 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 a dynamic range of 99 dB at a 5 V reference. Power consumption is specified at 4 mW for the core and 7 mW total at 1 MSPS throughput. It utilizes a versatile serial interface compatible with SPI, QSPI, Microwire, and DSP standards.

Feature Summary

• True differential analog input architecture providing high common-mode rejection
• Zero latency successive approximation architecture without pipeline delay
• Versatile serial interface supporting daisy-chaining and busy indicator modes
• Low power dissipation scaling linearly with throughput

Applications

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

Procurement Notes

Verify the specific package variant against the datasheet ordering guide. Confirm that the suffix corresponds to the LFCSP or MSOP form factor required for the design. Ensure the voltage reference and logic levels match the system requirements before finalizing procurement.

Selection Notes

Select this component when 18-bit resolution and 1 MSPS throughput are required in a low-power environment. Verify compatibility with external differential drivers like the ADA4940-1. Ensure the application supports the necessary external reference voltage range between 2.4 V and 5.1 V for optimal performance.

Part Context

The AD7982 belongs to the PulSAR ADC family, offering pin-for-pin compatibility with the 16-bit AD7980. It is designed for precision applications requiring high dynamic range and low power consumption. The device integrates a track-and-hold circuit and is available in compact surface-mount packages suitable for space-constrained designs.

Replacement Considerations

The AD7980 is a pin-compatible alternative offering 16-bit resolution. For higher resolution requirements, consider the AD7989. Verify interface compatibility and power specifications when substituting within the PulSAR family.