AD12401-400KWS

Overview

The AD12401-400KWS is a 12-bit, 400 MSPS analog-to-digital converter module from Analog Devices Inc. It features transformer-coupled analog input and proprietary Advanced Filter Bank (AFB™) digital post-processing to enhance spurious-free dynamic range. The device operates with a 3.7 V analog supply and 3.3 V/1.5 V digital supplies. At 400 MSPS, it achieves a typical SNR of 63 dBFS at 128 MHz and an SFDR of 70 dBFS. The module includes internal signal conditioning optimized for dynamic performance up to 175 MHz and provides LVDS output data in two's complement format.

Feature Summary

• Up to 400 MSPS sample rate with 12-bit resolution
• Transformer-coupled analog input with integrated AC-coupled signal conditioning
• Advanced Filter Bank (AFB™) digital post-processing for enhanced SFDR
• LVDS digital outputs with two's complement coding
• Single-ended or differential ENCODE clock input support

Applications

• Communications test equipment
• Radar and satellite subsystems
• Phased array antennas and digital beams
• Multichannel, multimode receivers
• Secure communications and wideband carrier frequency systems

Procurement Notes

Verify the specific suffix KWS indicates the low gain grade configuration when ordering. Confirm that the required operating case temperature range of 0°C to 60°C aligns with the system thermal design. Ensure power supplies provide stable 3.7 V, 3.3 V, and 1.5 V rails as specified in the DC characteristics table.

Selection Notes

Select the AD12401-400KWS for applications requiring high dynamic performance at maximum sampling rates with lower input voltage swings. The KWS suffix denotes the low gain grade, which accepts a full-scale input voltage range of 3.2 V p-p compared to the JWS grade's 1.6 V p-p. Verify compatibility with LVDS receiver circuits for the digital output interface.

Part Context

This component belongs to the AD12401 family of high-speed ADC modules. The AD12401 series utilizes time-interleaved architecture with digital correction. Variants include different gain grades (JWS/KWS) and maximum encode rates (400 MSPS/360 MSPS/326 MSPS). The module form factor simplifies integration into wideband carrier systems compared to discrete component solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.