FUNCTIONAL BLOCK DIAGRAM

ENCODE

AD9050

T/H

ADC

SUM

AMP

DAC

ADC

+5V

DECODE

LOGIC

TIMING

AIN

AINB

+5V

GND

REFERENCE CKTS

10

REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

AD9050

FEATURES

Low Power: 315 mW @ 40 MSPS, 345 mW @ 60 MSPS

On-Chip T/H, Reference

Single +5 V Power Supply Operation

Selectable 5 V or 3 V Logic I/O

SNR: 53 dB Minimum at 10 MHz w/40 MSPS

APPLICATIONS

Medical Imaging

Instrumentation

Digital Communications

Professional Video

PRODUCT DESCRIPTION

The AD9050 is a complete 10-bit monolithic sampling analog-

to-digital converter (ADC) with an onboard track-and-hold and

reference. The unit is designed for low cost, high performance

applications and requires only +5 V and an encode clock to

achieve 40 MSPS or 60 MSPS sample rates with 10-bit resolution.

The encode clock is TTL compatible and the digital outputs

are CMOS; both can operate with 5 V/3 V logic, selected by the

user. The two-step architecture used in the AD9050 is opti-

mized to provide the best dynamic performance available while

maintaining low power consumption.

A 2.5 V reference is included onboard, or the user can provide

an external reference voltage for gain control or matching of

multiple devices. Fabricated on an advanced BiCMOS pro-

cess, the AD9050 is packaged in space saving surface mount

packages (SOIC, SSOP) and is specified over the industrial

(–40

°C to +85°C) temperature range. The 60 MSPS version

(AD9050BRS-60) is only available in the SSOP package.

+5V

10 BITS

0.1µF

0.1µF

0.1µF

ENCODE

(2)

74AC574

3

4

10

5

6

9

1, 7, 12,

21, 23

13

2, 8, 11,

20, 22

AD9050

AIN

(+3.3V

± 0.512V)

+5V

Figure 1. Typical Connections

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

Tel: 617/329-4700

World Wide Web Site: http://www.analog.com

Fax: 617/326-8703

© Analog Devices, Inc., 1997

10-Bit, 40 MSPS/60 MSPS

A/D Converter