REV. C

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 that

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

under any patent or patent rights of Analog Devices.

a

10-Bit 60 MSPS

A/D Converter

AD9020

FUNCTIONAL BLOCK DIAGRAM

1024

10

D

E

C

O

D

E

L

O

G

I

C

R

R

R

R

R

R

R

R

ANALOG IN

512

384

C

O

M

P

A

R

A

T

O

R

L

A

T

C

H

E

S

257

256

129

128

2

1

MSB

INVERT

LSBS

INVERT

OVERFLOW

OVERFLOW

OVERFLOW

385

GROUND

R/2

R/2

R/2

R/2

R/2

R/2

R/2

R/2

ENCODE

AD9020

L

A

T

C

H

FEATURES

Monolithic 10-Bit/60 MSPS Converter

TTL Outputs

Bipolar ( 1.75 V) Analog Input

56 dB SNR @ 2.3 MHz Input

Low (45 pF) Input Capacitance

MIL-STD-883-Compliant Versions Available

APPLICATIONS

Digital Oscilloscopes

Medical Imaging

Professional Video

Radar Warning/Guidance Systems

Infrared Systems

GENERAL DESCRIPTION

The AD9020 A/D converter is a 10-bit monolithic converter

capable of word rates of 60 MSPS and above. Innovative archi-

tecture using 512 input comparators instead of the traditional

1024 required by other flash converters reduces input capaci-

tance and improves linearity.

Encode and outputs are TTL-compatible, making the AD9020

an ideal candidate for use in low power systems. An over-

flow bit is provided to indicate analog input signals greater

Voltage sense lines are provided to insure accurate driving of the

resistor ladder help optimize the integral linearity of the unit.

Either 68-pin ceramic leaded (gull wing) packages or ceramic

LCCs are available and are specifically designed for low thermal

impedances. Two performance grades for temperatures of both

0

°C to 70°C and –55°C to +125°C ranges are offered to allow

the user to select the linearity best suited for each application.

Dynamic performance is fully characterized and production

tested at 25

°C. MIL-STD-883 units are available.

The AD9020 A/D Converter is available in versions compliant

with MIL-STD-883. Refer to the Analog Devices Military Prod-

ucts Databook or current AD9020/883B data sheet for detailed

specifications.

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., 2001