AD9237BCPZ-20

Overview

The AD9237BCPZ-20 is a monolithic, single-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum sampling rate of 20 MSPS with a single 3 V supply. The device features a high-performance sample-and-hold amplifier (SHA) and an integrated voltage reference. Power consumption is specified at 85 mW at the maximum data rate. It utilizes a multistage differential pipelined architecture with output error correction logic to ensure no missing codes over the full operating temperature range.

Feature Summary

• Ultralow power consumption scales with data rate
• Patented SHA input maintains performance beyond Nyquist
• Flexible analog input range configuration
• Integrated clock duty cycle stabilizer

Applications

• Ultrasound and medical imaging systems
• Battery-powered instruments
• Hand-held scope meters
• Low cost digital oscilloscopes
• Low power communications equipment

Procurement Notes

Verify the specific suffix BCPZ corresponds to the LFCSP-32 package and industrial temperature grade (-40°C to +85°C). Confirm that the -20 designation matches the required 20 MSPS sampling speed. Check for RoHS compliance status in the latest manufacturer documentation before finalizing orders.

Selection Notes

Select this component when a single-channel 12-bit resolution is required at low data rates. Ensure the system supports a single 3 V analog supply and a separate DRVDD for logic levels. Verify that the flexible input span options meet the signal amplitude requirements of the application.

Part Context

This part belongs to the AD9237 family, which includes variants supporting 40 MSPS and 65 MSPS speeds. All members share the same 32-lead LFCSP package and core architecture. The primary distinction between family members is the maximum conversion rate and associated power dissipation characteristics.

Replacement Considerations

Direct replacements within the same family include AD9237BCPZ-40 and AD9237BCPZ-65, provided higher sampling rates are acceptable. Cross-family alternatives like the AD9235 or AD9238 offer different channel counts or pinouts and require schematic redesign.