AD7940BRMZ-REEL7

Overview

The AD7940BRMZ-REEL7 is a 14-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.5 V to 5.5 V and supports throughput rates up to 100 kSPS. The device features an internal track-and-hold amplifier with a full power bandwidth of 7 MHz typ at -3 dB. Signal-to-Noise + Distortion (SINAD) is specified at 81 dB min for a 10 kHz input frequency. Power consumption is typically 4 mW at 100 kSPS with a 3 V supply. The component utilizes a serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards.

Feature Summary

• Integrated track-and-hold amplifier supporting wide input bandwidth
• Flexible power management with shutdown mode reducing current to 0.5 µA max
• Internal reference derived from the power supply eliminating external components
• No pipeline delays associated with the conversion process

Applications

• Battery-powered systems
• Medical instruments
• Remote data acquisition systems
• Instrumentation and control systems

Procurement Notes

Verify the specific package variant upon ordering, as the AD7940 series includes both SOT-23 and MSOP options. Confirm that the REEL7 suffix indicates tape and reel packaging suitable for automated assembly processes. Ensure compatibility with the target system's logic voltage levels and supply requirements before finalizing procurement.

Selection Notes

Select this component when a compact 14-bit resolution is required in space-constrained designs. It is suitable for applications needing low power consumption during idle periods via its power-down feature. Verify that the 100 kSPS throughput rate meets the system's sampling requirements and that the single-ended input range aligns with the available signal levels.

Part Context

This part belongs to the AD7940 family of low-power ADCs from Analog Devices. It represents one of the first 14-bit ADCs available in a small footprint package. The BRMZ-REEL7 designation specifies the industrial temperature grade, MSOP package option, and reel packaging format within the broader product line.

Replacement Considerations

Direct replacements include other parts from the AD7940 family such as the AD7940ARMZ or AD7940BRUZ depending on the required package type. Cross-family alternatives should be evaluated based on pin compatibility and electrical specifications.