AD7920BRMZ-REEL7

Overview

The AD7920BRMZ-REEL7 is a 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.35 V to 5.25 V supply and supports throughput rates up to 250 kSPS. The device features an internal track-and-hold amplifier capable of handling input frequencies exceeding 13 MHz. It utilizes a flexible serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Power consumption is typically 3.6 mW at 250 kSPS with a 3 V supply. The component is housed in an 8-lead MSOP package.

Feature Summary

• Integrated track-and-hold amplifier for wide bandwidth signal acquisition
• Flexible power management with low standby current consumption
• Internal reference derived directly from the power supply voltage
• Standard successive approximation architecture without pipeline delays

Applications

• Battery-powered systems
• Medical instruments
• Data acquisition systems
• Instrumentation and control systems

Procurement Notes

Verify the specific grade designation within the part number against official documentation to ensure compliance with required linearity specifications. Confirm that the ordering suffix corresponds to the intended reel packaging format. Cross-reference the manufacturer's latest datasheet revision to validate all electrical parameters before finalizing procurement orders.

Selection Notes

Select this component when a 12-bit resolution is required alongside high-speed sampling capabilities in a compact footprint. Ensure the system design accommodates the single-ended input range extending from ground to the supply voltage. Verify that the host microcontroller can provide the necessary serial clock frequency to achieve the desired throughput rate.

Part Context

This component belongs to the AD7910/AD7920 family of micropower ADCs. The AD7920 variant specifically provides 12-bit resolution compared to the 10-bit AD7910. Both share identical pinouts and operational characteristics, differing primarily in conversion accuracy and data word length.

Replacement Considerations

The AD7910 serves as a lower-resolution alternative within the same package. Other members of the AD79xx series may offer different channel counts or resolutions but require verification of pin compatibility and electrical specifications.