AD7914BRUZ

Overview

The AD7914BRUZ is a 10-bit, 4-channel successive approximation analog-to-digital converter (ADC) housed in a 16-lead TSSOP package. It operates from a single 2.7 V to 5.25 V supply with a maximum throughput rate of 1 MSPS. The device features four single-ended analog inputs managed by a programmable channel sequencer and includes an on-chip track-and-hold amplifier. Power dissipation is specified at 13.5 mW maximum at 5 V supplies and 6 mW maximum at 3 V supplies during operation. The serial interface supports SPI, QSPI, Microwire, and DSP protocols.

Feature Summary

• Integrated channel sequencer for automated sequential conversion of multiple single-ended inputs
• VDRIVE function enabling direct connection to 3 V or 5 V processor systems independent of the analog supply
• Flexible power management with auto shutdown and full shutdown modes to minimize current consumption
• No pipeline delay architecture allowing accurate control of sampling instants via the CS input

Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation benefiting from low power consumption and single-supply operation
• Data acquisition modules interfacing with microprocessors or DSPs via standard serial interfaces

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm temperature range and packaging type. The B version indicates commercial operating conditions ranging from -40°C to +85°C. Confirm that the required quantity matches the tube packaging specifications provided in the manufacturer's ordering guide.

Selection Notes

Select this component when a balance of moderate resolution and high speed is required for single-ended signals. Ensure the external reference voltage is set to 2.5 V ±1% for optimal performance. Verify that the system clock frequency allows for the desired throughput rate while maintaining signal integrity within the specified input bandwidth limits.

Part Context

This part belongs to the AD7904/AD7914/AD7924 family of high-speed, low-power ADCs. The AD7914 specifically provides 10-bit resolution, distinguishing it from the 8-bit AD7904 and the 12-bit AD7924. All members share identical pinouts, functional blocks, and interface protocols, differing primarily in resolution and dynamic performance metrics.

Replacement Considerations

The AD7914WYRUZ serves as an automotive-grade alternative within the same family, offering extended temperature capabilities. Other family members like the AD7904BRUZ and AD7924BRUZ are pin-compatible but differ in resolution.