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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
AD9005B
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
12-Bit, 10 MSPS
A/D Converter
FUNCTIONAL BLOCK DIAGRAM
AFLASH
FINE
ENCODE
SUM AMP
L
O
G
I
C
A
R
R
A
Y
5
4
TIMING
T/H
45
24
AD9005B
9
20
AINPUT
ENCODE
T/H
IN
DIGITAL
DATA
FEATURES
Complete 12-Bit A/D Converter
Includes Track-and-Hold, Reference and Timing
Bipolar Analog Input (
6
1.024 V)
Up to 10 MSPS Sampling Rate
Low Power Dissipation: 3.2 W
Low Harmonic Distortion
MlL-STD-883-Compliant Versions Available
APPLICATIONS
Radar
Digital Receivers
Electro-Optics
Medical Scanners
Signal Intelligence
Spectrum Analyzers
GENERAL DESCRIPTION
The AD9005B is a complete 12-bit A/D converter that includes
on-board track-and-hold amplifier, voltage reference, and tim-
ing circuits. Featuring sampling rates from dc to 10 MSPS, the
AD9005B uses a subranging converter architecture to achieve
high speed and high resolution. Dynamic performance includes
an SNR of 64 dB and harmonic distortion of –72 dBc with a
4.3 MHz analog input.
This unit replaces its predecessor, the AD9005A. The AD9005B
uses a higher level of integration than the earlier design to pro-
vide increased performance, better reliability and reduced cost.
The AD9005B requires only +5 V and –5.2 V supplies (elimi-
nating the +15 V and –15 V requirements of the AD9005A).
The AD9005B will operate without board modification in
AD9005A sockets because +15 V and –15 V pins are not
internally connected. All grades are fully tested for dynamic
performance.
Critical to the performance of the AD9005B is the use of ad-
vanced bipolar integrated circuits, custom designed for this
device and manufactured by Analog Devices. The AD9005B is
TTL-compatible with offset binary outputs. It is available in a
46-lead hermetic metal DIP in two temperature ranges: 0
°
C to
+70
°
C commercial range and –55
°
C to +125
°
C military range
(case temperature).