AD7920BKS-500RL7

Overview

The AD7920BKSZ-500RL7 is a 12-bit, high-speed, low-power successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.35 V to 5.25 V supply and supports throughput rates up to 250 kSPS. The device features an internal track-and-hold amplifier capable of handling input frequencies exceeding 13 MHz. It utilizes a flexible serial interface compatible with SPI, QSPI, Microwire, and DSP standards. The ADC incorporates a power-down mode with maximum current consumption of 1 μA. It is housed in a compact 6-lead SC70 surface-mount package.

Feature Summary

• Integrated track-and-hold amplifier for wide bandwidth signal acquisition
• Flexible serial interface supporting multiple standard protocols
• Internal reference derived directly from the power supply voltage
• Configurable power-down mode for optimized energy efficiency

Applications

• Battery-powered portable systems
• Medical instrumentation devices
• Mobile communications equipment
• Data acquisition systems
• Industrial control applications

Procurement Notes

Verify the specific grade and suffix against official documentation before procurement. Confirm that the ordering code matches the required resolution and package type. Ensure compatibility with existing system voltage levels and clock speeds. Check for any regional distribution restrictions or lead time variations provided by authorized suppliers.

Selection Notes

Select this component when a 12-bit resolution is required alongside low power consumption in a small footprint. Consider the AD7910 if 10-bit resolution suffices for the application. Evaluate the serial clock speed requirements to ensure they align with the desired throughput rate. Verify that the single-ended input range of 0 V to VDD meets the signal conditioning needs of the design.

Part Context

This part belongs to the AD7910/AD7920 family of 10-bit and 12-bit ADCs. Both variants share identical pinouts, interfaces, and power characteristics. The primary distinction lies in the resolution, with the AD7920 offering 12 bits compared to the AD7910's 10 bits. They are designed for similar low-power, space-constrained applications requiring moderate speed.

Replacement Considerations

The AD7910 serves as a lower-resolution alternative within the same package and interface family. No other direct cross-model replacements are confirmed in the provided documentation.