AD7982BRMZRL7

Overview

The AD7982BRMZRL7 is an 18-bit, 1 MSPS PulSAR analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.5 V supply with a separate digital interface voltage ranging from 1.8 V to 5 V. The device features true differential analog inputs and an external reference input between 2.4 V and 5.1 V. Key performance metrics include a signal-to-noise ratio of 98 dB at 1 kHz, total harmonic distortion of -119 dB, and integral nonlinearity of ±2 LSB maximum. Power consumption is 7 mW 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 supporting ±VREF or 0 V to VREF ranges
• Zero latency successive approximation architecture without pipeline delay
• Versatile serial interface supporting daisy-chaining and optional busy indicator
• Low power dissipation scaling linearly with throughput

Applications

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

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to reel packaging requirements for your assembly line. Confirm that the BRMZ variant matches the required MSOP-10 package dimensions and thermal characteristics. Ensure the component meets RoHS compliance standards applicable to your manufacturing region before finalizing procurement orders.

Selection Notes

Select this component when high resolution and moderate speed are required in a low-power environment. The 18-bit resolution supports precision applications requiring detailed signal analysis. Verify that the host system can accommodate the 1.8 V to 5 V logic interface voltage range. Consider the differential input requirement if driving the ADC directly from a differential source amplifier.

Part Context

The AD7982 belongs to the PulSAR family of SAR ADCs from Analog Devices. It shares pin compatibility with other members like the AD7980 but offers higher 18-bit resolution. The device is designed for space-constrained applications due to its compact MSOP and LFCSP packages. It serves as a bridge between high-performance data conversion and low-power system requirements.

Replacement Considerations

The AD7980 is a pin-for-pin compatible alternative offering 16-bit resolution. If lower resolution is acceptable, the AD7980 may serve as a direct substitute. Other family members like the AD7983 offer different sampling rates but may require interface adjustments.