Dual-Channel, 12-Bit, 80 MSPS ADC

with Analog Input Signal Conditioning

AD13280

Rev. C

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2002–2008 Analog Devices, Inc. All rights reserved.

FEATURES

Dual 80 MSPS, minimum sample rate

Channel-to-channel matching, ±1% gain error

90 dB channel-to-channel isolation

DC-coupled signal conditioning

80 dB spurious-free dynamic range

Selectable bipolar inputs (±1 V and ±0.5 V ranges)

Integral single-pole, low-pass Nyquist filter

Twos complement output format

3.3 V compatible outputs

1.85 W per channel

APPLICATIONS

Radar processing (optimized for I/Q baseband operation)

Phased array receivers

Multichannel, multimode receivers

GPS antijamming receivers

Communications receivers

PRODUCT HIGHLIGHTS

1.

Guaranteed sample rate of 80 MSPS.

2.

Input signal conditioning; gain and impedance match.

3.

Single-ended, differential, or off-module filter option.

4.

Fully tested/characterized full channel performance.

FUNCTIONAL BLOCK DIAGRAM

TIMING

3

9

12

VREF

DROUT

12

ENCODEA

ENCODEA

D9A D10A D11A

(MSB)

D0B

(LSB)

D1B

D3B

D2B

D4B D5B D6B

D7B

D8B

TIMING

D9B

7

5

ENCODEB

ENCODEB

B–IN

D10B

D11B (MSB)

D0A (LSB)

D1A

D2A

D3A

D4A

D5A

D6A

D7A

D8A

AD13280

DROUTA

AMP-IN-B-2

AMP-IN-B-1

AMP-IN-A-2

AMP-IN-A-1

AMP-OUT-A

A–IN

A+IN

B+IN

AMP-OUT-B

DROUTB

VREF

DROUT

Figure 1.