AD9245BCPZ-20

Overview

The AD9245BCPZ-20 is a monolithic, single 3 V supply, 14-bit analog-to-digital converter featuring a high-performance sample-and-hold amplifier and voltage reference. It utilizes a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy and guarantee no missing codes over the full operating temperature range. The device operates at a maximum sampling rate of 20 MSPS with a typical Signal-to-Noise Ratio of 73.5 dBc and Spurious-Free Dynamic Range of 92.0 dBc. Power consumption is 90 mW at 20 MSPS. It supports flexible analog input ranges from 1 V p-p to 2 V p-p and offers offset binary or two's complement data formats.

Feature Summary

• Multistage differential pipelined architecture with output error correction logic ensures 14-bit accuracy and guarantees no missing codes across the operating temperature range.
• Patented sample-and-hold amplifier maintains excellent performance for input frequencies up to 100 MHz and can be configured for single-ended or differential operation.
• Integrated clock duty-cycle stabilizer maintains overall ADC performance over a wide range of clock pulse widths.
• Out-of-range indicator signal identifies overflow conditions that can be used with the most significant bit to determine low or high overflow.

Applications

• Medical imaging equipment
• IF sampling in communications receivers
• Battery-powered instruments

Procurement Notes

Verify the specific suffix BCPZ-20 against the manufacturer's current ordering guide to confirm the 20 MSPS speed grade. Ensure the package type matches the required 32-lead LFCSP footprint. Confirm RoHS compliance status through official documentation before finalizing procurement specifications.

Selection Notes

Select this component when a 14-bit resolution and 20 MSPS sampling rate are sufficient for the application. Consider the single 3 V supply requirement and the availability of an on-chip reference. Evaluate the parallel digital interface requirements against the target system's FPGA or processor capabilities.

Part Context

The AD9245BCPZ-20 belongs to the AD9245 family of 14-bit, 3 V analog-to-digital converters. This family includes variants with different maximum sampling rates, such as 40 MSPS, 65 MSPS, and 80 MSPS. All variants share the same pinout and architectural features, allowing for design flexibility based on bandwidth requirements.

Replacement Considerations

The AD9245BCPZ-40, AD9245BCPZ-65, and AD9245BCPZ-80 are pin-compatible alternatives within the same family. These parts offer higher sampling rates while maintaining the same 14-bit resolution and package configuration.

FAQ

What is the pipeline delay (latency) of the AD9245BCPZ-20?

The pipeline delay is 7 cycles.

Does the AD9245BCPZ-20 support both single-ended and differential inputs?

Yes, the device features a flexible analog input that supports both single-ended and differential configurations.

What is the maximum power dissipation for the AD9245BCPZ-20?

The maximum power dissipation is 414 mW.