AD7908WYRUZ-REEL7

Overview

The AD7908WYRUZ-REEL7 is an 8-bit, 8-channel successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single supply voltage ranging from 2.7 V to 5.25 V and supports throughput rates up to 1 MSPS. The device features eight single-ended analog inputs managed by a programmable channel sequencer. It utilizes a flexible serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Power consumption reaches a maximum of 13.5 mW at 5 V and 6.0 mW at 3 V during operation. The component is housed in a 20-lead TSSOP package.

Feature Summary

• Integrated channel sequencer for automated multi-channel conversion
• VDRIVE function enabling direct connection to 3 V or 5 V processors
• Flexible power management with auto shutdown and full shutdown modes
• No pipeline delay architecture for immediate data availability

Applications

• Industrial process control systems requiring multi-point monitoring
• Portable instrumentation powered by single-cell batteries
• Data acquisition modules for environmental sensing
• Automotive sensor interfaces meeting AEC-Q100 qualification

Procurement Notes

Verify the specific suffix REEL7 corresponds to tape-and-reel packaging when sourcing components. Confirm that the W model designation meets the required signal-to-noise ratio specifications for your application. Ensure the ordering documentation matches the automotive temperature range if operating outside standard commercial limits.

Selection Notes

Select this component when eight single-ended channels are required within a compact footprint. The AD7908 provides sufficient resolution for general-purpose applications where 8-bit accuracy is adequate. Consider the VDRIVE pin configuration to simplify logic level interfacing without external translators.

Part Context

This part belongs to the AD7908/AD7918/AD7928 family of high-speed, low-power ADCs. While the AD7918 offers 10-bit resolution and the AD7928 provides 12-bit resolution, the AD7908 focuses on cost-effective 8-bit performance. All variants share identical pinouts and functional block diagrams.

Replacement Considerations

Direct substitutes include the AD7918 and AD7928 for higher resolution needs. For lower channel counts, consider the AD7904 series. Verify pin compatibility and software register configurations when migrating between these family members.