AD9248BCPZ-40

Overview

The AD9248BCPZ-40 is a dual-channel, 14-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates at a maximum sampling rate of 40 MSPS and requires a single 3 V supply voltage. The device features a multistage differential pipelined architecture with output error correction logic to ensure no missing codes across the full operating temperature range. It includes dual high-performance sample-and-hold amplifiers and an integrated voltage reference. The ADC supports flexible analog input ranges from 1 V p-p to 2 V p-p and offers selectable data formats including offset binary or two's complement.

Feature Summary

• Dual-channel integration with independent clock inputs for simultaneous conversion cycles
• Built-in duty cycle stabilizer to maintain performance under varying clock conditions
• Multiplexed data output option enabling single-port operation from either channel
• High crosstalk immunity exceeding 85 dB between channels

Applications

• Ultrasound equipment
• Direct conversion or IF sampling receivers
• Battery-powered instruments
• Hand-held scopemeters
• Low cost digital oscilloscopes

Procurement Notes

Verify the specific speed grade suffix in the part number to confirm the 40 MSPS rating. Ensure the LFCSP package variant matches the design footprint requirements. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this component when dual-channel 14-bit resolution is required at moderate sampling speeds. Consider the power consumption characteristics relative to the 40 MSPS operating point. Evaluate the need for the internal voltage reference versus external precision references based on system noise requirements.

Part Context

This model belongs to the AD9248 family, which also includes variants rated for 20 MSPS and 65 MSPS. All variants share pin compatibility and architectural similarities, allowing for design flexibility regarding speed and power trade-offs within the same product line.

Replacement Considerations

The AD9238 serves as a pin-compatible alternative offering 12-bit resolution. Verify interface compatibility and performance margins when substituting lower-resolution devices in existing designs.