AD9057-60 AD [Analog Devices], AD9057-60 Datasheet

no-image

AD9057-60

Manufacturer Part Number
AD9057-60
Description
8-Bit 40 MSPS/60 MSPS/80 MSPS A/D Converter
Manufacturer
AD [Analog Devices]
Datasheet
a
REV. B
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.
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 a 40 MSPS, 60 MSPS or 80 MSPS encode rates capabil-
ity and full-power analog bandwidth of 120 MHz, the compo-
nent 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
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 power-down function may be exercised to bring total con-
sumption 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 surface mount plastic pack-
age (20 SSOP) and is specified over the industrial (–40 C to
+85 C) temperature range.
FEATURES
8-Bit, Low Power ADC: 200 mW Typical
120 MHz Analog Bandwidth
On-Chip +2.5 V Reference and T/H
1 V p-p Analog Input Range
Single +5 V Supply Operation
+5 V or +3 V Logic Interface
Power-Down Mode: < 10 mW
Three Performance Grades (40 MSPS, 60 MSPS, 80 MSPS)
APPLICATIONS
Digital Communications (QAM Demodulators)
RGB & YC/Composite Video Processing
Digital Data Storage Read Channels
Medical Imaging
Digital Instrumentation
40 MSPS/60 MSPS/80 MSPS A/D Converter
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
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 SSOP) and is specified over the
industrial temperature range.
VREF OUT
BIAS OUT
VREF IN
FUNCTIONAL BLOCK DIAGRAM
AIN
VREF OUT
BIAS OUT
ENCODE
VREF IN
PWRDN
PIN CONFIGURATION
V
GND
GND
D
AIN
V
V
+2.5V
T/H
World Wide Web Site: http://www.analog.com
D
D
GND
10
AD9057
1
2
3
4
5
6
7
8
9
1k
(Not to Scale)
PWRDN
TOP VIEW
AD9057
ENCODE
ADC
20
19
18
17
16
15
14
13
12
11
V
© Analog Devices, Inc., 1997
DD
D0 (LSB)
D1
D2
D3
GND
V
D4
D5
D6
D7 (MSB)
DD
AD9057
8
D7–D0
8-Bit

Related parts for AD9057-60

AD9057-60 Summary of contents

Page 1

... VREF OUT 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 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 45.5 I –50 –62 –50 V –54 I –46 –60 –46 V –54 V –52 V 0.8 V 1.0 VI 2.0 2 4.5 IV 9.0 166 6.7 IV 9.0 166 6.7 –2– AD9057BRS-80 Typ Max Min Typ Max Units 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 – ppm ...

Page 3

... APERTURE DELAY A t PULSE WIDTH HIGH EH t PULSE WIDTH LOW EL t OUTPUT VALID TIME 4 OUTPUT PROP DELAY Figure 1. Timing Diagram –3– AD9057 AD9057BRS-80 Typ Max Min Typ Max Output Coding 5.5 6.5 7.4 8.8 205 260 220 281 6 10 ...

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 Figure 4. SINAD/SNR vs. AIN Frequency REV. B Typical Performance Characteristics–AD9057 –30 ENCODE = 60MSPS –35 AIN = –0.5dBFS –40 –45 –50 –55 –60 –65 – Figure 5. Harmonic Distortion vs. AIN Frequency 0 – ...

Page 6

... AD9057–Typical Performance Characteristics 350 300 V = +5V DD 250 200 150 100 AIN = 10.3MHz, –0.5dBFS ENCODE RATE – MSPS Figure 8. Power Dissipation vs. Encode Rate 46.5 46.0 45.5 45.0 44.5 44.0 43.5 ENCODE = 60MSPS AIN = 10.3MHz, –0.5dBFS 43.0 42.5 42.0 41.5 – TEMPERATURE – C Figure 9. SINAD/SNR vs. Temperature 0 – ...

Page 7

... Decode logic combines the multistage data and aligns the 8-bit word for strobed outputs on the rising edge of the ENCODE command. The MagAmp/Flash architec- ture of the AD9057 results in three pipeline delays for the out- put data. USING THE AD9057 ...

Page 8

... HIGH/LOW specifications) will cause no degradation in ADC performance (see Figure 1 timing diagram). Power Dissipation The power dissipation of the AD9057 is specified to reflect a typical application setup under the following conditions: analog input is –0.5 dBFS at 10.3 MHz digital outputs are loaded with 7 pF typical (10 pF maximum) ...

Page 9

... The encode signal source should be TTL/CMOS compatible and capable of driving a 50 termination (R7). The digital outputs of the AD9057 are buffered through latches on the evaluation board (U3) and are available for the user at connec- tor Pins 30–37. Latch timing is derived from the ADC EN- CODE clock and a digital clocking signal is provided for the board user at connector Pins 2 and 21 ...

Page 10

... AD9057 C17 0.1µF ANALOG IN U2 AD8041Q DIS NC 1k BNC – BNC J3 ENCODE J7 C10 C11 0.1µF 10µF J4, GND C7 C8 0.1µF 0.1µF J5, + 0.1µF 0.1µF 0.1µF DECOUPLING CAPS E7 +5V PWRDN ...

Page 11

... REV. B Figure 20. Evaluation Board Layout –11– AD9057 ...

Page 12

... AD9057 0.078 (1.98) 0.068 (1.73) 0.008 (0.203) 0.002 (0.050) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 20-Lead SSOP (RS-20) 0.295 (7.50) 0.271 (6.90 0.07 (1.78) PIN 1 0.066 (1.67) 0.037 (0.94) 8 0.0256 0 0.022 (0.559) SEATING 0.009 (0.229) (0.65) PLANE BSC 0.005 (0.127) –12– REV. B ...

Related keywords