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Analog Devices - Dual 6-Bit/ 60 MSPS Monolithic A/D Converter

Numéro de référence AD9066
Description Dual 6-Bit/ 60 MSPS Monolithic A/D Converter
Fabricant Analog Devices 
Logo Analog Devices 





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FEATURES
Two Matched ADCs on Single Chip
CMOS-Compatible I/O
Low-Power (400 mW) Dissipation
Single +5 V Supply
On-Chip Voltage Reference
Self-Biased for AC-Coupled Inputs
28-Lead SOIC and SSOP Packages
APPLICATIONS
Direct Broadcast Satellite (DBS) Receivers
QAM Demodulators
Wireless LANs
VSAT Receivers
Dual 6-Bit, 60 MSPS
Monolithic A/D Converter
AD9066
FUNCTIONAL BLOCK DIAGRAM
+VS
AD9066
VT
INA
6-BIT
DAC
D0A-D5A
REF A
ENCODE
INB
6-BIT
DAC
D0B-D5B
REF B
VB
PRODUCT DESCRIPTION
The AD9066 is a dual 6-bit ADC that has been optimized for
low-cost in-phase and quadrature (I and Q) demodulators.
Primary applications include digital direct broadcast satellite
applications where broadband quadrature phase shift keying
(QPSK) modulation is used. In these receivers the recovered signal
is separated into I and Q vector components and digitized.
To reduce total system cost and power dissipation, the AD9066
provides an internal voltage reference and operates from a
single +5 volt power supply. Digital outputs are CMOS com-
patible and rated to 60 MSPS conversion rates. The digital
input (ENCODE) utilizes a CMOS input stage with a TTL
compatible (1.4 V) threshold.
The AD9066 is housed in a 28-lead SOIC and a 28-lead SSOP
package and is available in two temperature grades. The
AD9066JR is rated for operation over the 0°C to 70°C commer-
cial temperature range. The AD9066AR/ARS is rated for the
–40°C to +85°C industrial temperature range.
The internal voltage reference insures that the analog input is
biased to midscale with low offset when driven from an ac-
coupled source. In dc-coupled applications, the midscale voltage
reference can be used to control external biasing amplifiers to
minimize offsets due to variations in temperature or supply voltage.
REV. A
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.
PIN CONFIGURATIONS
ENCODE 1
28 D5A (MSB)
+VS 2
GND 3
27 D4A
26 D3A
GND 4
25 D2A
+VS 5
INA 6
AD9066
(JR/AR)
24 D1A
23 D0A (LSB)
GND 7 TOP VIEW 22 GND
+VS 8 (Not to Scale) 21 +VS
VT 9
20 D5B (MSB)
REF A 10
19 D4B
INB 11
18 D3B
REF B 12
17 D2B
VB 13
16 D1B
NC 14
15 D0B (LSB)
NC = NO CONNECT
+VS 1
28 GND
VT 2
27 INA
REF A 3
INB 4
26 +VS
25 GND
REF B 5
24 GND
VB 6
AD9066
(ARS)
23 +VS
NC 7 TOP VIEW 22 ENCODE
(LSB) D0B 8 (Not to Scale) 21 D5A (MSB)
D1B 9
20 D4A
D2B 10
19 D3A
D3B 11
18 D2A
D4B 12
17 D1A
(MSB) D5B 13
16 D0A (LSB)
+VS 14
15 GND
NC = NO CONNECT
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000

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