AD9057 Analog Devices, AD9057 Datasheet

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AD9057

Manufacturer Part Number
AD9057
Description
8-Bit, 40/60/80 MSPS A/D Converter
Manufacturer
Analog Devices
Datasheet

Specifications of AD9057

Resolution (bits)
8bit
# Chan
1
Sample Rate
80MSPS
Interface
Par
Analog Input Type
SE-Uni
Ain Range
1 V p-p
Adc Architecture
Pipelined
Pkg Type
SOP

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a
REV. D
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. Trademarks and
registered trademarks are the property of their respective companies.
PRODUCT DESCRIPTION
The AD9057 is an 8-bit monolithic analog-to-digital converter
optimized for low cost, low power, small size, and ease of use.
With 40 MSPS, 60 MSPS, or 80 MSPS encode rate capability
and full-power analog bandwidth of 120 MHz, the component is
ideal for applications requiring excellent dynamic performance.
To minimize system cost and power dissipation, the AD9057
includes an internal 2.5 V reference and a track-and-hold (T/H)
circuit. The user must provide only a 5 V power supply and an
encode clock. No external reference or driver components are
required for many applications.
The AD9057’s encode input is TTL/CMOS compatible, and the
8-bit digital outputs can be operated from 5 V or 3 V supplies. A
FEATURES
8-Bit, Low Power ADC: 200 mW Typical
120 MHz Analog Bandwidth
On-Chip 2.5 V Reference and Track-and-Hold
1 V p-p Analog Input Range
Single 5 V Supply Operation
5 V or 3 V Logic Interface
Power-Down Mode: <10 mW
3 Performance Grades (40 MSPS, 60 MSPS, 80 MSPS)
APPLICATIONS
Digital Communications (QAM Demodulators)
RGB and YC/Composite Video Processing
Digital Data Storage Read Channels
Medical Imaging
Digital Instrumentation
8-Bit 40 MSPS/60 MSPS/80 MSPS
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
power-down function may be exercised to bring total consumption
to <10 mW. In power-down mode, the digital outputs are driven
to a high impedance state.
Fabricated on an advanced BiCMOS process, the AD9057 is
available in a space-saving 20-lead shrink small outline package
(20-lead SSOP) and is specified over the industrial temperature
range (–40∞C to +85∞C).
Customers desiring multichannel digitization may consider the
AD9059, a dual 8-bit, 60 MSPS monolithic based on the
AD9057 ADC core. The AD9059 is available in a 28-lead sur-
face-mount plastic package (28-lead SSOP) and is specified over
the industrial temperature range.
VREF OUT
BIAS OUT
VREF IN
FUNCTIONAL BLOCK DIAGRAM
AIN
© 2003 Analog Devices, Inc. All rights reserved.
V
D
T/H
2.5V
GND
1k
AD9057
PWRDN
A/D Converter
ENCODE
ADC
V
DD
AD9057
8
www.analog.com
D7–D0

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AD9057 Summary of contents

Page 1

... Customers desiring multichannel digitization may consider the AD9059, a dual 8-bit, 60 MSPS monolithic based on the AD9057 ADC core. The AD9059 is available in a 28-lead sur- face-mount plastic package (28-lead SSOP) and is specified over the industrial temperature range. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...

Page 2

... V –54 I –46 –60 –46 V –54 V –52 V 0.8 V 1.0 VI 2.0 2.0 VI 0.8 ± ± 4.5 IV 9.0 166 6.7 IV 9.0 166 6.7 –2– AD9057BRS-80 Typ Max Min Typ Max Unit 8 8 Bits 0.75 1.9 0.75 1.9 LSB 2.0 2.0 LSB 0.75 1.9 0.75 1.9 LSB 2.0 2.0 LSB Guaranteed –2.5 +6 –6 –2 – ± 70 ± ...

Page 3

... AD9057BRS-60 AD9057BRS-80 Typ Max Min Typ Max 2.95 4.95 0.05 0.05 Offset Binary Code 5.5 6.5 7.4 8.8 205 260 220 281 ± 5 ± 5%). 126∞C/ MAX 166 ns 166 ns AD9057 Unit mV/V ...

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 AD9057 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

... AIN = –0.5dBFS 100 ANALOG INPUT FREQUENCY (MHz) TPC 3. SINAD/SNR vs. AIN Frequency REV. D Typical Performance Characteristics–AD9057 –30 ENCODE = 60MSPS –35 AIN = –0.5dBFS –40 –45 –50 –55 –60 –65 – TPC 4. Harmonic Distortion vs. AIN Frequency 0 – ...

Page 6

... AD9057 350 300 250 200 150 100 AIN = 10.3MHz, –0.5dBFS ENCODE RATE (MSPS) TPC 7. Power Dissipation vs. Encode Rate 46.5 46.0 SNR 45.5 45.0 SINAD 44.5 44.0 ENCODE = 60MSPS 43.5 AIN = 10.3MHz, –0.5dBFS 43.0 42.5 42.0 41.5 – TEMPERATURE ( C) TPC 8. SINAD/SNR vs. Temperature 0 –0.2 –0.4 –0.6 – ...

Page 7

... VREF OUT pin should be decoupled to ground with a 0.1 mF capacitor (to minimize modulation of the reference voltage) and the bias resistor should be approxi- mately 1 kW bias resistor (± 20%) is included within the AD9057 and may be used to reduce application board size and complexity. VREF OUT VREF IN ...

Page 8

... V). The amplifier offsets the analog signal by +VREF (2.5 V typical) to center the voltage for proper ADC input drive. For dc-coupled operation, connect (analog input to R2) and E11 to E12 (amplifier output to analog input of AD9057) using the board jumper connectors. DC offset of the analog input signal can be modified by adjusting potentiometer R10. ...

Page 9

... The power-down function of the AD9057 can be done through a board jumper connection. Connect PWRDN) for power-down operation. For normal operation, connect (ground to PWRDN). The encode signal source should be TTL/CMOS compatible and capable of driving termination (R7). The digital outputs ...

Page 10

... C11 C10 10 F 0.1 F J4, GND C7 C8 0.1 F 0 0.1 F 0.1 F 0.1 F DECOUPLING CAPS E7 5V PWRDN E9 E8 J6, REF GND E4 AD9057 E5 1 PWRDN (LSB VREF OUT 2k 3 VREF R10 GND GND 5 0.1 F 500 BIAS OUT 7 AIN 8 R6 ...

Page 11

... REV. D Figure 8. Evaluation Board Layout –11– AD9057 ...

Page 12

... AD9057 0.05 MIN COPLANARITY Revision History Location 5/03—Data Sheet changed from REV REV. D. Change to SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9/01—Data Sheet changed from REV REV. C. Edit to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 OUTLINE DIMENSIONS 20-Lead Shrink Small Outline Package [SSOP] (RS-20) Dimensions shown in millimeters 7.50 7.20 6. ...

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