AD7914BRU

Overview

The AD7914BRU is a 10-bit, 4-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 four single-ended analog inputs with an integrated channel sequencer and a wide bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 8 MHz. It utilizes a flexible serial interface compatible with SPI, QSPI, Microwire, and DSP standards. Power consumption is specified at a maximum of 6 mW at 3 V and 13.5 mW at 5 V during full-speed operation.

Feature Summary

• Integrated channel sequencer allows pre-programmed sequential conversion of multiple single-ended inputs.
• VDRIVE function enables the serial interface to connect directly to 3 V or 5 V processor systems independent of the analog supply voltage.
• Flexible power management includes auto shutdown and full shutdown modes to minimize current consumption at lower throughput rates.
• No pipeline delays ensure accurate control of the sampling instant via the CS input.

Applications

• Portable battery-powered instrumentation
• Industrial process control data acquisition
• Chemical analysis solutions

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm temperature range and automotive qualification status. The 'B' suffix denotes commercial grade operation, while 'W' indicates automotive qualification. Ensure the package type matches the design requirements before procurement.

Selection Notes

Select this component for applications requiring low power consumption alongside moderate resolution and high speed. The 10-bit resolution balances accuracy and performance. Consider the external reference requirement and the available channel count when designing the system architecture.

Part Context

This part belongs to the AD7904/AD7914/AD7924 family of high-speed, low-power ADCs. The family shares identical pinouts and functional blocks, differing primarily in resolution: 8-bit (AD7904), 10-bit (AD7914), and 12-bit (AD7924). This allows for easy migration between resolutions within the same package footprint.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.