AD9649BCPZRL7-20

Analog To Digital Converters (ADC) Overview

The AD9649BCPZRL7-20 is a monolithic, single-channel 14-bit analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum sampling rate of 20 MSPS with a differential clock input supporting CMOS, LVDS, or LVPECL logic. The device features a multistage differential pipeline architecture with output error correction logic to ensure no missing codes across the full operating temperature range. It utilizes a single 1.8 V analog supply and a separate digital output driver supply ranging from 1.8 V to 3.3 V. Key specifications include a signal-to-noise ratio of 74.3 dBFS at a 9.7 MHz input frequency and a spurious-free dynamic range of 93 dBc under the same conditions.

Analog To Digital Converters (ADC) Feature Summary

• Multistage differential pipeline architecture with integrated output error correction logic for high accuracy.
• On-chip voltage reference and sample-and-hold circuit designed for low cost and ease of use.
• Standard serial port interface (SPI) supports configuration of data formatting, internal clock dividers, and power-down modes.
• Flexible digital output options including offset binary, gray code, or twos complement formats.

Analog To Digital Converters (ADC) Applications

• Communications systems
• Diversity radio systems
• Multimode digital receivers

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix RL7 against official documentation to confirm reel packaging and quantity details. Ensure compatibility with the required 20 MSPS sampling speed variant within the AD9649 family. Confirm RoHS compliance status and lead times through authorized distribution channels prior to procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 14-bit resolution and 20 MSPS sampling rate are required for low-power applications. Consider the AD9649 series for designs needing flexible digital output formats and on-chip reference capabilities. Evaluate the LFCSP package size and thermal characteristics against PCB layout constraints.

Analog To Digital Converters (ADC) Part Context

The AD9649 belongs to a family of 14-bit ADCs available in 20, 40, 65, and 80 MSPS variants. These devices share a common 32-lead LFCSP package and pinout, facilitating migration between different speed grades. The AD9649 specifically targets applications requiring moderate sampling rates with high linearity and low power consumption.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9649BCPZ-20 is a direct equivalent part number without the reel suffix. Other speed variants such as AD9649BCPZ-40, AD9649BCPZ-65, and AD9649BCPZ-80 are pin-compatible but offer higher sampling rates.

Analog To Digital Converters (ADC) FAQ

What is the maximum input clock frequency for the AD9649BCPZRL7-20?

The maximum input clock frequency is 80 MHz, which corresponds to the 20 MSPS conversion rate after the integer clock divider.

Does the AD9649 support external voltage references?

Yes, the device includes an on-chip voltage reference but also supports external reference inputs via the VREF and SENSE pins.

What data output formats are supported by the AD9649?

The AD9649 supports offset binary, gray code, and twos complement data formats, which can be selected via the SPI interface.