AD9051-2VPCB AD [Analog Devices], AD9051-2VPCB Datasheet

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AD9051-2VPCB

Manufacturer Part Number
AD9051-2VPCB
Description
10-Bit, 60 MSPS A/D Converter
Manufacturer
AD [Analog Devices]
Datasheet
a
GENERAL DESCRIPTION
The AD9051 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 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.
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.
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
IN
= 10.3 MHz
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 tem-
perature range (–40 C to +85 C).
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
ENCODE
AINB
AIN
FUNCTIONAL BLOCK DIAGRAM
+5V
TIMING
BWSEL
World Wide Web Site: http://www.analog.com
T/H
SUM
AMP
AD9051
+5V
10-Bit, 60 MSPS
GND
A/D Converter
© Analog Devices, Inc., 1998
ADC
ADC
DAC
REFERENCE
IN
CIRCUITS
AD9051
DECODE
LOGIC
OUT
10

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AD9051-2VPCB Summary of contents

Page 1

... 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. ...

Page 2

... + + + + 56.5 + –74 + –73 + –67 + –74 + –70 + –65 + –65 + 0.1 + 0.5 –2– AD9051BRS-2V Max Min Typ Max 10 1.50 0.75 1.50 0.90 1.50 0.75 1.50 0.90 GUARANTEED 0.3 2.5 0.3 3.0 5.0 5 2.0 26 –14 5.0 26 4.0 6.0 5 50/130 2.6 2.4 2.5 2 6 5.0 2 ...

Page 3

... C V 7.5 + 7.5 + 7.5 Full VI 4.95 Full VI 0.05 Full VI 2.95 Full VI 0.05 Offset Binary Full Full VI 250 315 + –3– AD9051 AD9051BRS-2V Min Typ Max Units 2 7.5 pF 7.5 ns 7.5 ns 4.95 V 0.05 V 2.95 V 0.05 V Offset Binary 250 315 mV/V = 3.0 V. The output ...

Page 4

... 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 ...

Page 5

... D2 ENCODE D3 D4 DIGITAL GND OUTPUTS V DD GND AINB (PIN 9) D9 (MSB) AIN (PIN 10) V –5– AD9051 = 50 MHz nominal – – – – – 1 Figure 1. Timing Diagram ...

Page 6

... AD9051 –Typical Performance Characteristics 255 250 245 240 235 230 225 220 215 210 CLOCK RATE – MSPS Figure 3. Power Dissipation vs. Clock Rate SINAD @ 60MSPS 54 SNR @ 60MSPS FREQUENCY – MHz Figure 4. SNR/SINAD vs. AIN Frequency – ...

Page 7

... Figure 13. FFT Plot 60 MSPS, 21.7 MHz 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 22.5 26 –7– AD9051 AIN = 15.2MHz ENCODE = 60 MSPS SNR = 58.29dB SINAD = 57.23dB 3.8 7.5 11.3 15.0 18.8 22.5 26.3 FREQUENCY – MHz AIN = 21.7MHz ENCODE = 60 MSPS SNR = 57.76dB SINAD = 56.27dB 3.8 7.5 11.3 15.0 18.8 22.5 26.3 FREQUENCY – ...

Page 8

... AD9051 1.2 1.0 0.8 0.6 0.4 0 ENCODE – MSPS Figure 15. Gain vs. Clock Rate ENCODE – MSPS Figure 16. Offset vs. Clock Rate SNR @ 40MSPS 54 SNR @ 60MSPS DUTY CYCLE – % Figure 17. SNR vs. Duty Cycle 6 ...

Page 9

... All components are powered from a single +5 V supply. The AD820 is used to offset the ground referenced input signal to the level required by the AD9051. AC coupling of the analog inputs of the AD9051 is easily accom- plished. Figure 22 shows capacitive coupling of a single-ended signal while Figure 23 shows transformer coupling differentially into the AD9051 ...

Page 10

... This minimizes power in the output stages, but is not realistic from a usage standpoint. The dissipation in the output stages can be minimized by inter- facing the outputs logic (refer to Using the AD9051 System). The lower output swings minimize power consump- 2 ...

Page 11

... Figure 25. Evaluation Board Top Layer Figure 26. Evaluation Board Ground Layer REV. A Figure 27. Evaluation Board Bottom Layer Figure 28. Silkscreen –11– AD9051 ...

Page 12

... U3 2 74AC00 74AC00 74AC00 74AC00 0.078 (1.98) 0.068 (1.73) 0.008 (0.203) 0.002 (0.050 C13 C15 0 AD9051 GND 1 GND1 (LSB 0 +5VA1 D1 +5VA 27 C2 0.1 F VREFOUT VREFIN +5VA BWSEL GND2 GND ...

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