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
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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, 2313
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