ANALOG DEVICES AD9051 Service Manual
10-Bit, 60 MSPS
2010
781/461-3113
C
a
FEATURES
60 MSPS Sampling Rate
9.3 Effective Number of Bits at f
250 mW Total Power at 60 MSPS
Selectable Input Bandwidth of 50 MHz or 130 MHz
On-Chip T/H and Voltage Reference
Single 5 V Supply Voltage
5 V or 3 V Logic I/O Compatible
Input Range and Output Coding Options Available
APPLICATIONS
Medical Imaging
Digital Communications
Professional Video
Instrumentation
Set-Top Box
GENERAL DESCRIPTION
The AD9051 is a complete 10-bit monolithic sampling analogto-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 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. The two-step
architecture used in the AD9051 is optimized to provide the
best dynamic performance available while maintaining low
power consumption.
= 10.3 MHz
IN
A/D Converter
AD9051
FUNCTIONAL BLOCK DIAGRAM
BWSEL
5V
AINB
AIN
ENCODE
TIMING
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 a state-of-the-art BiCMOS
process, the AD9051 is packaged in a space saving surface
mount package (SSOP) and is specified over the industrial temperature range (–40°C to +85°C).
5V GND
AD9051
T/H
SUM
AMP
IN OUT
REFERENCE
CIRCUITS
ADC
DAC
ADC
DECODE
LOGIC
10
REV.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: © Analog Devices, Inc.,
AD9051BRS/
AD9051BRSZ
AD9051BRS-2V/
AD9051BRSZ-2V
8.76
53.5
54.5
9.3
9.0
8.8
56.5
56
54
55.5
56.5
55
8.59
52.5
53.5
9.1
8.8
8.6
56.5
55
53
56.5
55.5
54
REV. C
AD9051BRS/
AD9051BRSZ
AD9051BRS-2V/
AD9051BRSZ-2V
REV. C
AD9051
WARNING!
ESD SENSITIVE DEVICE
C
ABSOLUTE MAXIMUM RATINGS*
VD, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Analog Inputs . . . . . . . . . . . . . . . . . . . . –0.5 V to V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
VREF Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature . . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . . 150°C
Maximum Case Temperature . . . . . . . . . . . . . . . . . . . . 150°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods may effect device reliability.
Table I. Digital Coding (Single-Ended Input with AIN, AINB Bypassed to GND)
+ 0.5 V
D
D
D
EXPLANATION OF TEST LEVELS
Test Level
I. 100% production tested.
II. 100% production tested at 25°C and sample tested at
specified temperatures.
III. Sample tested only.
IV. Parameter is guaranteed by design and characterization
testing.
V. Parameter is a typical value only.
VI. 100% production tested at 25°C; guaranteed by design and
characterization testing for industrial temperature range.
OR Digital Output
Analog Input Voltage Level (Out of Range) MSB... LSB
3.126 (3.50)* Positive Full Scale + 1 LSB 1 1111111111
2.5 Midscale 0 0111111111
1.874 (1.50)* Negative Full Scale – 1 LSB 1 0000000000
*(BRS-2V Version)
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD9051 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
–4–
REV.
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