AD9649W

Analog To Digital Converters (ADC) Overview

The AD9649W is a monolithic, single-channel 1.8 V supply, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc. It supports sampling rates of 20, 40, 65, and 80 MSPS. The device features a differential input with a 700 MHz bandwidth and operates on a 1.8 V analog supply with a 1.8 V to 3.3 V output supply. Key performance metrics include an SNR of 74.3 dBFS at a 9.7 MHz input and 71.5 dBFS at a 200 MHz input. SFDR is specified as 93 dBc at 9.7 MHz input and 80 dBc at 200 MHz input. Power consumption is 45 mW at 20 MSPS and 87 mW at 80 MSPS. The ADC includes an on-chip voltage reference and sample-and-hold circuit, accepting a 2 V p-p differential analog input.

Analog To Digital Converters (ADC) Feature Summary

• Supports multiple high-speed sampling rates up to 80 MSPS with low power consumption modes
• Features a wide 700 MHz bandwidth differential analog input interface
• Integrates on-chip voltage reference and sample-and-hold circuitry for simplified system design
• Offers flexible digital output formats including offset binary, gray code, or two's complement

Analog To Digital Converters (ADC) Applications

• Software-defined radio systems
• Instrumentation and test equipment
• Medical imaging systems
• Communications infrastructure

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'W' against official Analog Devices documentation to confirm package type and RoHS compliance status, as standard variants may differ. Ensure the selected part number matches the required sampling rate variant (20/40/65/80 MSPS). Cross-reference the datasheet revision date to ensure compatibility with current design specifications. Confirm that the 1.8 V supply requirements align with the target system power architecture before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the AD9649W when a 14-bit resolution and high dynamic range are required for wideband signal acquisition. Consider the 700 MHz input bandwidth for applications demanding high-frequency signal fidelity. Evaluate the power consumption profiles at different sampling rates to optimize thermal management. Ensure the system can accommodate the 1.8 V analog supply and 1.8 V to 3.3 V digital I/O levels. Verify that the serial port control options meet the host processor's interface capabilities.

Analog To Digital Converters (ADC) Part Context

The AD9649 belongs to a family of high-performance, low-power, single-channel 14-bit ADCs designed for demanding applications. It is available in a 32-lead RoHS-compliant LFCSP package and is specified over the industrial temperature range of -40°C to +85°C. The device integrates essential functions such as a sample-and-hold circuit and voltage reference, reducing external component count. It supports various data formats and clock divider options for flexible integration into complex digital systems.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers for the AD9649W are not explicitly documented in the provided source material. Users should consult Analog Devices official resources for direct replacements or pin-compatible alternatives within the same product family.