AD7915BRMZ

Overview

The AD7915BRMZ is a single-channel, 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) from the Analog Devices PulSAR family. It operates with a sampling rate of 1 MSPS and accepts differential input signals. The device functions on dual 2.5 V supplies, consuming 4 mW at full speed with only the digital supply active and 7 mW total power dissipation. Key performance metrics include a signal-to-noise ratio (SNR) of 94 dB, a maximum differential nonlinearity (DNL) of 0.9 LSB, and an integral nonlinearity (INL) of 1 LSB. It utilizes an external reference and communicates via SPI, Microwire, or 3-wire serial interfaces. The component is housed in a 10-lead MSOP package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Low-power architecture enabling efficient operation in battery-powered applications
• High-resolution 16-bit data conversion with fast 1 MSPS throughput
• Flexible digital interface compatibility with standard microprocessor protocols

Applications

• Portable medical instrumentation requiring high precision and low power
• Industrial process control systems utilizing differential sensor inputs
• Data acquisition modules for harsh environments with wide temperature ranges

Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as the base model may be available in tubes or reels depending on the variant. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure that the external voltage reference selected matches the required accuracy specifications for the application. Check for any recent production change notices regarding assembly sites or material composition updates.

Selection Notes

Select this component when a balance of high resolution and moderate speed is required within a compact surface-mount footprint. Compare against the AD7916 if lower power consumption at reduced sampling rates is prioritized over the maximum 1 MSPS speed. Ensure the system design accommodates the need for an external voltage reference, as internal references are not included in this specific part number. Verify that the 10-MSOP package dimensions fit the PCB layout constraints.

Part Context

The AD7915BRMZ belongs to the AD7915/AD7916 series of PulSAR ADCs designed for low-power, medium-speed applications. It shares architectural similarities with other members of the family but is distinguished by its 1 MSPS sampling rate and 16-bit resolution. The BRMZ suffix indicates the industrial temperature grade and the MSOP-10 package type. This part serves as a bridge between high-speed converters and ultra-low-power, lower-resolution alternatives.

Replacement Considerations

The AD7916BRMZ-RL7 offers similar 16-bit resolution but operates at a lower 500 kSPS sampling rate with reduced power consumption. The AD7980BRMZRL7 provides comparable performance in the same package family. Verify pinout compatibility and electrical specifications before substituting these parts.