AD7927BRUZ

Overview

The AD7927BRUZ is a 12-bit, high-speed, low-power successive approximation analog-to-digital converter featuring eight 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. Key electrical parameters include a minimum SINAD of 70 dB at 50 kHz, ±1 LSB maximum integral nonlinearity, and ±1.5 LSB maximum gain error. Power consumption reaches 7.5 mW maximum at 5 V and 3.6 mW at 3 V during operation.

Feature Summary

• Eight single-ended analog inputs managed by a programmable channel sequencer for automated sequential conversion.
• Flexible power management with normal, auto shutdown, and full shutdown modes to optimize energy efficiency.
• VDRIVE function enabling direct serial interface connection to 3 V or 5 V processor systems independent of AVDD.
• High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards without pipeline delays.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Automotive sensor interfaces meeting automotive qualification standards.
• Portable instrumentation utilizing single-supply operation and low power consumption.
• Data logging applications involving vibration monitoring or temperature sensing.

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and reel specifications. Ensure the component meets RoHS compliance requirements for your region. Confirm that the operating temperature range aligns with your system's environmental constraints before finalizing procurement.

Selection Notes

Select this component when eight single-ended channels are required within a compact TSSOP-20 footprint. Consider the AD7927 for designs needing flexible input ranges via the RANGE bit or those requiring minimal latency due to the absence of pipeline delays. Evaluate power budgets carefully as current draw varies significantly between operational and shutdown modes.

Part Context

The AD7927 belongs to Analog Devices' family of 12-bit SAR ADCs designed for general-purpose data acquisition. It shares architectural similarities with the AD7923 but offers increased channel count. The BRUZ suffix indicates a commercial temperature grade (-40°C to +85°C) in a TSSOP package, distinct from the W version which supports extended automotive temperatures.

Replacement Considerations

The AD7927BRUZ-REEL serves as the tape and reel packaging variant of the same functional component. For lower channel counts, the AD7923 provides a four-channel alternative in a smaller package. Higher speed options may require evaluating the AD7908 series.