AD7923BRUZ-REEL

Overview

The AD7923BRUZ-REEL is a 12-bit, high-speed, low-power successive approximation (SAR) analog-to-digital converter featuring four single-ended inputs and an integrated channel sequencer. It operates from a single 2.7 V to 5.25 V supply with throughput rates up to 200 kSPS. The device includes a wide bandwidth track-and-hold amplifier handling input frequencies exceeding 8 MHz. Power dissipation is specified at 3.6 mW maximum at 200 kSPS with a 3 V supply and 7.5 mW maximum with a 5 V supply. It utilizes a flexible serial interface compatible with SPI, QSPI, Microwire, and DSP standards.

Feature Summary

• Four single-ended analog inputs managed by a programmable channel sequencer for sequential conversion.
• VDRIVE function enables the serial interface to connect directly to either 3 V or 5 V processor systems independent of the analog supply voltage.
• Flexible power management allows conversion rate adjustment via serial clock speed and supports auto-shutdown modes to minimize current consumption.
• No pipeline delay architecture ensures accurate control of the sampling instant via the CS input.

Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation utilizing low power consumption features
• Automotive applications qualified under AEC-Q100 standards
• Data acquisition modules interfacing with microprocessors or DSPs

Procurement Notes

Verify the specific suffix REEL against manufacturer documentation to confirm packaging format. Ensure the B version temperature range (-40°C to +125°C) matches system requirements. Confirm that the external reference voltage is set to 2.5 V ±1% for specified performance. Check RoHS compliance status as indicated in official product specifications before finalizing procurement orders.

Selection Notes

Select this component when a 12-bit resolution and 200 kSPS throughput are required for single-ended signals. The B version is suitable for industrial environments operating between -40°C and +125°C. Consider the AD7923WYRUZ variant if automotive qualification is mandatory. Ensure the application can accommodate the need for an external reference voltage and verify that the TSSOP-16 package fits the PCB layout constraints.

Part Context

The AD7923 belongs to Analog Devices' family of low-power, high-speed SAR ADCs. It shares architectural similarities with the AD7927 but offers four channels instead of eight. The BRUZ designation indicates the commercial/industrial temperature grade and TSSOP-16 packaging. This part is designed to replace older multichannel ADCs in space-constrained designs requiring moderate speed and resolution.

Replacement Considerations

The AD7923WYRUZ serves as a direct functional replacement for automotive applications due to its AEC-Q100 qualification. Verify pin compatibility and software register configuration when substituting these parts. No other direct cross-model replacements are confirmed in public documentation without additional verification.