AD9237BCPZRL7-20

Overview

The AD9237BCPZRL7-20 is a monolithic, single-supply, 12-bit analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum sampling rate of 20 MSPS with ultralow power consumption of 85 mW. The device features a differential input with 500 MHz bandwidth and supports flexible input ranges from 1 V p-p to 4 V p-p. It utilizes a multistage differential pipelined architecture with output error correction logic to guarantee no missing codes over the full operating temperature range of −40°C to +85°C. The ADC includes an on-chip voltage reference and sample-and-hold amplifier.

Feature Summary

• Ultralow power consumption scales with speed, consuming 85 mW at 20 MSPS.
• Patented sample-and-hold amplifier maintains performance for frequencies beyond Nyquist.
• Flexible analog input configuration supports both single-ended and differential operation.
• Integrated clock duty cycle stabilizer ensures consistent performance across varying clock pulse widths.

Applications

• Ultrasound and medical imaging systems
• Battery-powered instruments and hand-held scope meters
• Low cost digital oscilloscopes
• Low power digital still cameras and copiers

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the BCP variant corresponds to the 20 MSPS speed grade. Ensure the LFCSP package thermal requirements are met during integration. Check RoHS compliance status against current manufacturing revisions.

Selection Notes

Select this component for applications requiring low power at moderate speeds. The 20 MSPS variant is suitable where 65 MSPS performance is unnecessary. Consider the separate DRVDD supply for logic level compatibility. Evaluate the internal reference options against external precision requirements.

Part Context

This part belongs to the AD9237 family, which includes variants supporting 40 MSPS and 65 MSPS rates. All members share the same 32-lead LFCSP package and pinout. The family is designed for high-performance, low-power data acquisition in portable and battery-operated environments.

Replacement Considerations

The AD9237BCPZRL7-40 and AD9237BCPZRL7-65 are direct functional replacements within the same package. They offer higher sampling rates while maintaining identical pinouts and power supply requirements. Verify that the system clock can support the increased speed if substituting with faster variants.