AD7924BRUZ

Overview

The AD7924BRUZ is a 12-bit, 4-channel successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates on a single 2.7 V to 5.25 V supply with a maximum throughput rate of 1 MSPS. The device features four single-ended inputs managed by a channel sequencer and utilizes an external reference input. Key electrical parameters include a Signal-to-Noise Ratio (SNR) of 70 dB minimum at 50 kHz input frequency, ±1 LSB maximum Integral Nonlinearity (INL), and −0.9/+1.5 LSB maximum Differential Nonlinearity (DNL). Power consumption reaches 6 mW maximum at 3 V supplies and 13.5 mW maximum at 5 V supplies during operation.

Feature Summary

• Four single-ended analog inputs with a programmable channel sequencer for automated sequential conversion.
• Flexible power management with full shutdown mode reducing current consumption to 0.5 µA maximum.
• VDRIVE function allows the serial interface to operate independently of the analog supply voltage.
• No pipeline delays associated with the successive approximation conversion process.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Automotive applications qualified for extended temperature ranges.
• Battery-powered instrumentation benefiting from low power consumption modes.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your region. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before purchase.

Selection Notes

Select the AD7924BRUZ when 12-bit resolution and 1 MSPS throughput are required for single-ended signals. Consider the external reference requirement and the need for a microprocessor-compatible SPI interface. Evaluate the thermal performance in the TSSOP-16 package if operating near maximum power dissipation limits.

Part Context

This component belongs to the AD7904/AD7914/AD7924 family of high-speed, low-power ADCs. The AD7924 variant specifically provides 12-bit resolution, distinguishing it from the 8-bit AD7904 and 10-bit AD7914 models within the same series. All variants share identical pinouts, interfaces, and functional block diagrams.

Replacement Considerations

The AD7924BRU is the non-Z (lead-free) equivalent of the AD7924BRUZ. Other family members like the AD7914BRUZ or AD7904BRUZ offer lower resolutions but maintain pin compatibility. Verify automotive grade (W version) requirements if operating in high-temperature environments.