12-Bit, 400 MSPS A/D Converter

AD12401

Rev. A

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FEATURES

Up to 400 MSPS sample rate

SNR of 63 dBFS @128 MHz

SFDR of 70 dBFS @128 MHz

VSWR of 1:1.5

High or low gain grades

Wideband ac-coupled input signal conditioning

Enhanced spurious-free dynamic range

Single-ended or differential ENCODE signal

LVDS output levels

Twos complement output data

APPLICATIONS

Communications test equipment

Radar and satellite subsystems

Phased array antennas, digital beams

Multichannel, multimode receivers

Secure communications

Wireless and wired broadband communications

Wideband carrier frequency systems

FUNCTIONAL BLOCK DIAGRAM

ADC

A

DATA

READY

A

DATA

READY

B

DA0–DA11

DR_EN

CLK DISTRIBUTION

AD12401

POST-

PROCESSING

ADC

B

CLOCK DISTRIBUTION

DIVIDE BY 2

ENC

ENC

OROUT

DB0–DB11

Figure 1.

GENERAL DESCRIPTION

The AD12401 is a 12-bit analog-to-digital converter (ADC)

with a transformer-coupled analog input and digital post-

processing for enhanced SFDR. The product operates at up to

400 MSPS conversion rate with outstanding dynamic performance

in wideband carrier systems.

The AD12401 requires a 3.7 V analog supply and 3.3 V and

1.5 V digital supplies, and provides a flexible ENCODE signal

that can be differential or single ended. No external reference is

required.

The AD12401 package style is an enclosed 2.9" × 2.6" × 0.6"

module. Performance is rated over a 0°C to 60°C case

temperature range.

PRODUCT HIGHLIGHTS

1. Guaranteed sample rate up to 400 MSPS.

2. Input signal conditioning with optimized dynamic

performance to 175 MHz.

3. High and low gain grades available.

4. Additional performance options available (sample rates

>400 MSPS or second Nyquist zone operation); contact

sales.

5. Proprietary Advanced Filter Bank (AFB™) digital post-

processing from V Corp Technologies, Inc.