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
A/D Converter
AD9057
FUNCTIONAL BLOCK DIAGRAM
V
D
PWRDN
V
DD
AD9057
AIN
BIAS OUT
VREF IN
VREF OUT
2.5V
T/H
1k
ADC
8
D7–D0
GND
ENCODE
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
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.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© 2003 Analog Devices, Inc. All rights reserved.
AD9057* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
REFERENCE MATERIALS
Technical Articles
•
Correlating High-Speed ADC Performance to Multicarrier
3G Requirements
•
DNL and Some of its Effects on Converter Performance
•
MS-2210: Designing Power Supplies for High Speed ADC
DOCUMENTATION
Application Notes
•
AN-348: Avoiding Passive-Component Pitfalls
•
AN-501: Aperture Uncertainty and ADC System
Performance
•
AN-715: A First Approach to IBIS Models: What They Are
and How They Are Generated
•
AN-737: How ADIsimADC Models an ADC
•
AN-741: Little Known Characteristics of Phase Noise
•
AN-756: Sampled Systems and the Effects of Clock Phase
Noise and Jitter
Data Sheet
•
AD9057: 8-Bit, 40/60/80 MSPS A/D Converter Data Sheet
DESIGN RESOURCES
•
AD9057 Material Declaration
•
PCN-PDN Information
•
Quality And Reliability
•
Symbols and Footprints
DISCUSSIONS
View all AD9057 EngineerZone Discussions.
TOOLS AND SIMULATIONS
•
AD9057 IBIS Models
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
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AD9057–SPECIFICATIONS
(V = 5 V, V
D
DD
= 3 V; external reference, unless otherwise noted.)
AD9057BRS-60
Min
Typ
Max
8
1.9
2.0
1.9
2.0
–6
–8
0.75
0.75
1.9
2.0
1.9
2.0
–6
–8
AD9057BRS-80
Min
Typ
Max
8
0.75
0.75
1.9
2.0
1.9
2.0
Unit
Bits
LSB
LSB
LSB
LSB
% FS
% FS
ppm/∞C
Parameter
RESOLUTION
DC ACCURACY
Differential Nonlinearity
Integral Nonlinearity
No Missing Codes
Gain Error
1
Gain Tempco
1
ANALOG INPUT
Input Voltage Range
(Centered at 2.5 V)
Input Offset Voltage
Input Resistance
Input Capacitance
Input Bias Current
Analog Bandwidth
BAND GAP REFERENCE
Output Voltage
Temperature Coefficient
SWITCHING PERFORMANCE
Maximum Conversion Rate
Minimum Conversion Rate
Aperture Delay (t
A
)
Aperture Uncertainty (Jitter)
Output Valid Time (t
V
)
2
Output Propagation Delay (t
PD
)
2
DYNAMIC PERFORMANCE
3
Transient Response
Overvoltage Recovery Time
Signal-to-Noise Ratio (SINAD)
(With Harmonics)
f
IN
= 10.3 MHz
f
IN
= 76 MHz
Effective Number of Bits (ENOB)
f
IN
= 10.3 MHz
f
IN
= 76 MHz
Signal-to-Noise Ratio (SNR)
(Without Harmonics)
f
IN
= 10.3 MHz
f
IN
= 76 MHz
Second Harmonic Distortion
f
IN
= 10.3 MHz
f
IN
= 76 MHz
Third Harmonic Distortion
f
IN
= 10.3 MHz
f
IN
= 76 MHz
Two Tone Intermodulation
Distortion (IMD)
Differential Phase
Differential Gain
DIGITAL INPUTS
Logic 1 Voltage
Logic 0 Voltage
Logic 1 Current
Logic 0 Current
Input Capacitance
Encode Pulsewidth High (t
EH
)
Encode Pulsewidth Low (t
EL
)
Temp
Test
Level
AD9057BRS-40
Min Typ
Max
8
25∞C
Full
25∞C
Full
Full
25∞C
Full
Full
I
VI
I
VI
VI
I
VI
V
0.75
0.75
–6
–8
Guaranteed
–2.5
+6
+8
±
70
Guaranteed
–2.5
+6
+8
±
70
Guaranteed
–2.5
+6
+8
±
70
25∞C
25∞C
Full
25∞C
25∞C
25∞C
Full
25∞C
Full
Full
Full
Full
25∞C
25∞C
Full
Full
25∞C
25∞C
V
I
VI
V
V
I
VI
V
VI
V
VI
IV
V
V
IV
IV
V
V
–15
–25
1.0
0
150
2
6
120
+15
+25
–15
–25
1.0
0
150
2
6
120
+15
+25
–15
–25
1.0
0
150
2
6
120
+15
+25
16
25
16
25
16
25
V p-p
mV
mV
kW
pF
mA
mA
MHz
V
ppm/∞C
MSPS
MSPS
ns
ps rms
ns
ns
ns
ns
2.4
2.5
±
10
2.6
2.4
2.5
±
10
2.6
2.4
2.5
±
10
2.6
40
5
2.7
5
6.6
11.5
9
9
60
5
2.7
5
6.6
9.5
9
9
80
5
2.7
5
6.6
8.0
9
9
4.0
4.0
18.0
4.0
14.2
11.3
25∞C
25∞C
25∞C
25∞C
I
V
I
V
42
45.5
44.0
7.2
7.0
42
45
43.5
7.2
6.9
41.5
45
43.5
7.2
6.9
dB
dB
Bits
Bits
6.7
6.7
6.6
25∞C
25∞C
25∞C
25∞C
25∞C
25∞C
25∞C
25∞C
25∞C
Full
Full
Full
Full
25∞C
25∞C
25∞C
I
V
I
V
I
V
V
V
V
VI
VI
VI
VI
V
IV
IV
43
46.5
45.5
–62
–54
–60
–54
–52
0.8
1.0
43
46
45
–62
–54
–60
–54
–52
0.8
1.0
42.5
46
45
–62
–54
–60
–54
–52
0.8
1.0
dB
dB
dBc
dBc
dBc
dBc
dBc
Degrees
%
V
V
mA
mA
pF
ns
ns
–50
–50
–50
–46
–46
–46
2.0
0.8
±
1
±
1
166
166
2.0
0.8
±
1
±
1
166
166
2.0
0.8
±
1
±
1
166
166
4.5
9.0
9.0
4.5
6.7
6.7
4.5
5.5
5.5
–2–
REV. D
AD9057
Parameter
Temp
Test
Level
AD9057BRS-40
Min Typ
Max
AD9057BRS-60
Min
Typ
Max
AD9057BRS-80
Min
Typ
Max
Unit
DIGITAL OUTPUTS
Logic 1 Voltage (V
DD
= 3 V)
Logic 1 Voltage (V
DD
= 5 V)
Logic 0 Voltage
Output Coding
POWER SUPPLY
V
D
Supply Current (V
D
= 5 V)
V
DD
Supply Current (V
DD
= 3 V)
4
Power Dissipation
5, 6
Power-Down Dissipation
Power Supply Rejection Ratio
(PSRR)
Full
Full
Full
VI
IV
VI
2.95
4.95
0.05
Offset Binary Code
36
4.0
192
6
3
48
6.5
260
10
2.95
4.95
0.05
Offset Binary Code
38
5.5
205
6
3
48
6.5
260
10
2.95
4.95
0.05
Offset Binary Code
40
7.4
220
6
3
51
8.8
281
10
V
V
V
Full
Full
Full
Full
25∞C
VI
VI
VI
VI
V
mA
mA
mW
mW
mV/V
NOTES
1
Gain error and gain temperature coefficient are based on the ADC only (with a fixed 2.5 V external reference).
2
t
V
and t
PD
are measured from the 1.5 V level of the encode to the 10%/90% levels of the digital output swing. The digital output load during test is not to exceed
an ac load of 10 pF or a dc current of
±
40
mA.
3
SNR/harmonics based on an analog input voltage of –0.5 dBFS referenced to a 1.0 V full-scale input range.
4
Digital supply current based on V
DD
= 3 V output drive with <10 pF loading under dynamic test conditions.
5
Power dissipation is based on specified encode and 10.3 MHz analog input dynamic test conditions (V
D
= 5 V
±
5%, V
DD
= 3 V
±
5%).
6
Typical thermal impedance for the RS style (SSOP) 20-lead package :
q
JC
= 46∞C/W,
q
CA
= 80∞C/W, and
q
JA
= 126∞C/W.
Specifications subject to change without notice.
EXPLANATION OF TEST LEVELS
Test Level
I
II
III
IV
V
VI
Description
100% production tested.
100% production tested at 25∞C and sample
tested at specified temperatures.
Sample tested only.
Parameter is guaranteed by design and charac-
terization testing.
Parameter is a typical value only.
100% production tested at 25∞C; guaranteed
by design and characterization testing
for industrial temperature range.
N
AIN
N+3
N+1
N+2
N+4
N+5
t
A
ENCODE
t
EH
t
EL
t
V
DIGITAL
OUTPUTS
N–3
N–2
N–1
N
N+1
N+2
t
PD
MIN
t
A
t
EH
t
EL
t
V
t
PD
APERTURE DELAY
PULSEWIDTH HIGH
PULSEWIDTH LOW
OUTPUT VALID TIME
OUTPUT PROP DELAY
4.0 ns
6.6 ns
9.5 ns
TYP
2.7 ns
MAX
166 ns
166 ns
Figure 1. Timing Diagram
REV. D
–3–
AD9057
ABSOLUTE MAXIMUM RATINGS*
PIN CONFIGURATION
PWRDN 1
VREF OUT 2
VREF IN 3
GND 4
V
D
5
V
D
, V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Analog Inputs . . . . . . . . . . . . . . . . . . . . –0.5 V to V
D
+ 0.5 V
Digital Inputs . . . . . . . . . . . . . . . . . . . –0.5 V to V
DD
+ 0.5 V
VREF Input . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
D
+ 0.5 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 listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
20 D0 (LSB)
19 D1
18 D2
AD9057
17 D3
TOP VIEW 16 GND
(Not to Scale)
BIAS OUT 6
15 V
DD
AIN 7
V
D
8
GND 9
ENCODE 10
14 D4
13 D5
12 D6
11 D7 (MSB)
ORDERING GUIDE
PIN FUNCTION DESCRIPTIONS
Pin No.
Mnemonic
PWRDN
Function
Power-Down Function Select;
Logic High for Power-Down
Mode (Digital Outputs Go to
High Impedance State).
Internal Reference Output
(2.5 V typ); Bypass with 0.1
mF
to Ground.
Reference Input for ADC (2.5 V
typ,
±
10%).
Ground (Analog/Digital).
Analog 5 V Power Supply.
Bias Pin for AC Coupling
(1 kW to REF IN).
Analog Input for ADC.
Encode Clock for ADC (ADC
Samples on Rising Edge of
Encode).
Digital Outputs of ADC.
Digital Output Power Supply;
Nominally 3 V to 5
V.
Model
AD9057BRS-40
AD9057BRS-60
AD9057BRS-80
AD9057/PCB
Temperature
Range
–40∞C to +85∞C
–40∞C to +85∞C
–40∞C to +85∞C
25∞C
Package Option*
RS-20
RS-20
RS-20
Evaluation Board
1
2
VREF OUT
*RS
= Shrink Small Outline Package (SSOP).
Table I. Digital Coding (VREF = 2.5 V)
3
4, 9, 16
5, 8
6
7
10
VREF IN
GND
V
D
BIAS OUT
AIN
ENCODE
Analog Input
3.0 V
2.502 V
2.498 V
2.0 V
Voltage Level
Positive Full Scale
Midscale +1/2 LSB
Midscale –1/2 LSB
Negative Full Scale
Digital Output
1111 1111
1000 0000
0111 1111
0000 0000
11–14, 17–20
15
D7–D0
V
DD
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 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.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. D
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