AD9245BCPZ-40

Overview

The AD9245BCPZ-40 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 40 MSPS with a typical Signal-to-Noise Ratio of 73.3 dBc and Spurious-Free Dynamic Range of 89.0 dBc. Power consumption is 165 mW at the maximum conversion rate. It supports flexible analog inputs ranging from 1 V p-p to 2 V p-p and offers offset binary or twos 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 input 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.
• Single 3 V supply operation accommodates separate digital output driver supplies to support both 2.5 V and 3.3 V logic families.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure compatibility with system power rails, specifically the 2.7 V to 3.6 V analog supply and 2.25 V to 3.6 V digital driver supply ranges. Confirm thermal management requirements for the 32-lead LFCSP package under expected operating conditions.

Selection Notes

Select this component when a 14-bit resolution and 40 MSPS sampling rate are required within a low-power, single-supply design. The device is suitable for applications needing flexible analog input configurations, including single-ended setups. Consider the pin-compatible alternatives in the AD9245 family if migration between different resolutions or sampling speeds is anticipated during the product lifecycle.

Part Context

The AD9245BCPZ-40 belongs to the AD9245 series of high-speed, low-power analog-to-digital converters manufactured by Analog Devices. This series includes variants with sampling rates of 20 MSPS, 65 MSPS, and 80 MSPS, all sharing the same 32-lead LFCSP package and architectural features. The device is designed for applications requiring high dynamic range and low power consumption in compact form factors.

Replacement Considerations

The AD9245BCP-20, AD9245BCP-65, and AD9245BCP-80 are pin-compatible alternatives within the same family. These variants offer different maximum sampling rates (20 MSPS, 65 MSPS, and 80 MSPS respectively) while maintaining the same 14-bit resolution and package outline.

FAQ

What is the pipeline delay or latency of the AD9245BCPZ-40?

The AD9245BCPZ-40 has a fixed pipeline delay of 7 cycles.

How does the device handle out-of-range signals?

The AD9245BCPZ-40 includes an Out-of-Range (OTR) output bit that indicates when the signal exceeds the selected input range. The recovery time from an out-of-range condition is typically 1 cycle.

Can the AD9245BCPZ-40 operate with single-ended inputs?

Yes, the device features a truly differential SHA that allows for user-selectable input ranges and common modes, making it suitable for single-ended applications as well as differential operation.