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a

AD10201

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

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

Dual-Channel, 12-Bit 105 MSPS

IF Sampling A/D Converter

FUNCTIONAL BLOCK DIAGRAM

D0B

(LSB)

D1B

D2B

D3B

D4B

D5B

D6B

D7B

D8B

D9B

D10B

D11B

(MSB)

D0A

(LSB)

D1A

D2A

D3A

D4A

D5A

D6A

D7A

D8A

D9A

D10A

D11A

(MSB)

ADC

50

T1A

ADC

50

T1B

AD10201

12

ENCODEA

ENCODEA

REF

REF_A_OUT

TIMING

ENCODEB

ENCODEB

REF

REF_B_OUT

OUTPUT

RESISTORS

T/H

T/H

TIMING

12

OUTPUT

RESISTORS

12

12

FEATURES

Two Independent 12-Bit, 105 MSPS ADCs

Channel-to-Channel Isolation, > 90 dB

AC-Coupled Signal Conditioning Included

Gain Flatness up to Nyquist, < 0.1 dB

Input VSWR 1.05:1 to Nyquist

80 dB Spurious-Free Dynamic Range

Two’s Complement Output Format

3.3 V or 5 V CMOS-Compatible Output Levels

900 mW Per Channel

Single-Ended or Differential Input

250 MHz Input Bandwidth

APPLICATIONS

Wireless and Wired Broadband Communications

Base Stations and “Zero-IF” or Direct IF Sampling

Subsystems

Wireless Local Loop (WLL)

Local Multipoint Distribution Service (LMDS)

Radar and Satellite Subsystems

PRODUCT DESCRIPTION

The AD10201 offers two complete ADC channels with on-module

signal conditioning for improved dynamic performance. Each wide

dynamic range ADC has a transformer coupled front end optimized

for direct IF sampling. The AD10201 has on-chip track-and-hold

circuitry, and uses an innovative architecture to achieve 12-bit,

105 MSPS performance. The AD10201 uses innovative high

density circuit design to achieve exceptional performance while still

maintaining excellent isolation and providing for board area savings.

The AD10201 operates with 5.0 V supply for the analog-to-digital

conversion. Each channel is completely independent, allowing

operation with independent ENCODE and analog inputs. The

AD10201 is available as a 35 mm square 385-lead BGA package.

PRODUCT HIGHLIGHTS

1. Guaranteed sample rate of 105 MSPS

2. Input signal conditioning included with full-power bandwidth

to 250 MHz

3. Industry-leading IF sampling performance