10-Bit, 40 MSPS, 3 V, 74 mW
Analog-to-Digital Converter
AD9203W
Automotive Product
FEATURES
FUNCTIONAL BLOCK DIAGRAM
CLK
AVDD
DRVDD
CLAMP
AD9203W
CLAMPIN
AINP
STBY
A/D
AINN
SHA
A/D
GAIN
SHA
D/A
A/D
GAIN
3-STATE
D/A
REFTF
CORRECTION LOGIC
REFBF
BANDGAP
REFERENCE
VREF
OUTPUT BUFFERS
OTR
10
+
–
REFSENSE
D0 (LSB)
0.5V
AVSS
D9 (MSB)
PWRCON
DFS
DRVSS
10258-001
CMOS 10-bit, 40 MSPS sampling analog-to-digital converter
Power dissipation: 74 mW (3 V supply, 40 MSPS)
17 mW (3 V supply, 5 MSPS)
Operation between 2.7 V and 3.6 V supply
Differential nonlinearity: −0.25 LSB
Power-down (standby) mode: 0.65 mW
ENOB: 9.55 at fIN = 20 MHz
Out-of-range indicator
Adjustable on-chip voltage reference
IF undersampling up to fIN = 130 MHz
Input range: 1 V to 2 V p-p differential or single-ended
Adjustable power consumption
Internal clamp circuit
Qualified for automotive applications
Figure 1.
APPLICATIONS
Automotive
GENERAL DESCRIPTION
The AD9203W is a monolithic low power, single supply, 10-bit,
40 MSPS analog-to-digital converter, with an on-chip voltage
reference. The AD9203W uses a multistage differential pipeline
architecture and guarantees no missing codes over the full
operating temperature range. Its input range may be adjusted
between 1 V and 2 V p-p.
The AD9203W has an onboard programmable reference. An
external reference can also be chosen to suit the dc accuracy
and temperature drift requirements of an application.
An external resistor can be used to reduce power consumption
when operating at lower sampling rates. This yields power
savings for users who do not require the maximum sample
rate. This feature is especially useful at sample rates far below
40 MSPS. Excellent performance is still achieved at reduced
power. For example, 9.7 ENOB performance may be realized
with only 17 mW of power, using a 5 MHz clock.
A single clock input is used to control all internal conversion
cycles. The digital output data is presented in straight binary or
twos complementary output format by using the DFS pin. An
out-of-range signal (OTR) indicates an overflow condition that
can be used with the most significant bit to determine over- or
underrange.
The AD9203W can operate with a supply range from 2.7 V to
3.6 V, an attractive option for low power operation in high
speed portable applications.
The AD9203W is specified over industrial (−40°C to +85°C)
temperature ranges and is available in a 28-lead TSSOP package.
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
Low Power. The AD9203W consumes 74 mW on a 3 V
supply operating at 40 MSPS. In standby mode, power is
reduced to 0.65 mW.
High Performance. Maintains better than 9.55 ENOB at
40 MSPS input signal from dc to Nyquist.
Very Small Package. The AD9203W is available in a
28-lead TSSOP.
Programmable Power. The AD9203W power can be
further reduced by using an external resistor at lower
sample rates.
Built-In Clamp Function. Allows dc restoration of video
signals.
Rev. 0
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. Specifications subject to change without notice. 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 owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
AD9203W
Automotive Product
TABLE OF CONTENTS
Features .............................................................................................. 1 Thermal Characteristics ...............................................................5 Functional Block Diagram .............................................................. 1 ESD Caution...................................................................................5 General Description ......................................................................... 1 Pin Configuration and Function Descriptions..............................6 Product Highlights ........................................................................... 1 Outline Dimensions ..........................................................................7 Specifications..................................................................................... 3 Ordering Guide .............................................................................7 Absolute Maximum Ratings............................................................ 5 REVISION HISTORY
10/11—Revision 0: Initial Version
Rev. 0 | Page 2 of 8
Automotive Product
AD9203W
SPECIFICATIONS
AVDD = 3 V, DRVDD = 3 V, FS = 40 MSPS, input span from 0.5 V to 2.5 V, internal 1 V reference, PWRCON = AVDD, 50% clock duty
cycle, TMIN to TMAX unless otherwise noted.
Table 1.
Parameter
RESOLUTION
MAX CONVERSION RATE
PIPELINE DELAY
DC ACCURACY
Differential Nonlinearity
Integral Nonlinearity
Offset Error
Gain Error
ANALOG INPUT
Input Voltage Range
Input Capacitance
Aperture Delay
Aperture Uncertainty (Jitter)
Input Bandwidth (–3 dB)
Input Referred Noise
INTERNAL REFERENCE
Output Voltage (0.5 V Mode)
Output Voltage (1 V Mode)
Output Voltage Tolerance (1 V Mode)
Load Regulation
POWER SUPPLY
Operating Voltage
Analog Supply Current
Digital Supply Current
Symbol
Min
FS
40
DNL
INL
EZS
EFS
AIN
CIN
TAP
TAJ
BW
±0.7
±1.4
±2.8
±4.0
LSB
LSB
% FSR
% FSR
2
1.4
2.0
1.2
390
0.3
V p-p
pF
ns
ps rms
MHz
mV
0.5
1
±5
0.65
± 30
1.2
V
V
mV
mV
3.0
3.0
20.1
4.4
9.5
74
88.8
0.65
0.04
3.6
3.6
22.0
6.0
14.0
84.0
108.0
1.2
± 0.25
V
V
mA
mA
mA
mW
mW
mW
% FSR
1
2.7
2.7
Power Consumption
Power-Down
Power Supply Rejection Ratio
DYNAMIC PERFORMANCE (AIN = 0.5 dBFS)
Signal-to-Noise and Distortion1
f = 4.8 MHz
f = 20 MHz
Effective Bits
f = 4.8 MHz1
f = 20 MHz
Signal-to-Noise Ratio
f = 4.8 MHz1
f = 20 MHz
Total Harmonic Distortion
f = 4.8MHz
f = 20 MHz
Spurious-Free Dynamic Range
f = 4.8 MHz1
f = 20 MHz
5.5
Unit
Bits
MSPS
Clock
Cycles
±0.25
±0.65
±0.6
±0.7
VREF
VREF
AVDD
DRVDD
IAVDD
IDRVDD
Typ
10
PD
PSRR
Max
SINAD
57.2
59.7
59.3
dB
dB
9.2
9.6
9.55
Bits
Bits
57.5
60.0
59.5
dB
dB
ENOB
SNR
THD
−76.0
−74.0
−65.0
dB
dB
SFDR
67.8
80
78
Rev. 0 | Page 3 of 8
dB
dB
Conditions
Switched, single-ended
REFSENSE = VREF
REFSENSE = GND
1.0 mA load
fIN = 4.8 MHz, output bus load = 10 pF
fIN = 20 MHz, output bus load = 20 pF
fIN = 4.8 MHz, output bus load = 10pF
fIN = 20 MHz, output bus load = 20 pF
AD9203W
Automotive Product
Parameter
Two-Tone Intermodulation Distortion
Differential Phase
Differential Gain
DIGITAL INPUTS
High Input Voltage
Low Input Voltage
Clock Pulse Width High
Clock Pulse Width Low
Clock Period2
DIGITAL OUTPUTS
High-Z Leakage
Data Valid Delay
Data Enable Delay
Data High-Z Delay
LOGIC OUTPUT (with DRVDD = 3 V)
High Level Output Voltage (IOH = 50 μA)
High Level Output Voltage (IOH = 0.5 mA)
Low Level Output Voltage (IOL= 1.6 mA)
Low Level Output Voltage (IOL= 50 μA)
2
Min
VIH
VIL
2.0
Typ
68
0.2
0.3
Max
Unit
dB
Degree
%
V
V
ns
ns
ns
0.4
11.25
11.25
25
IOZ
tOD
tDEN
tDHZ
± 5.0
μA
ns
ns
ns
5
6
6
VOH
VOH
VOL
VOL
Conditions
f = 44.49 MHz and 45.52 MHz
NTSC 40 IRE ramp
2.95
2.80
Output = 0 to DRVDD
CL = 20 pF
CL = 20 pF
CL = 20 pF
V
V
V
V
0.3
0.05
Differential Input (2 V p-p).
The AD9203W converts at clock rates as low as 20 kHz.
N
N+1
N+2
N–1
N+3
ANALOG
INPUT
N+4
N+6
N+5
CLOCK
DATA
OUT
N–7
N–6
N–5
N–4
N–3
N–2
TOD = 3ns MIN
7ns MAX
(CLOAD = 20pF)
Figure 2. Timing Diagram
Rev. 0 | Page 4 of 8
N–1
N
N+1
10258-002
1
Symbol
IMD
DP
DG
Automotive Product
AD9203W
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
AVDD
DRVDD
AVSS
AVDD
REFCOM
CLK
Digital Outputs
AINP
VREF
REFSENSE
REFTF, REFBF
STBY
CLAMP
CLAMPIN
PWRCON
DFS
3-STATE
Junction
Temperature
Storage
Temperature
Lead
Temperature
(10 s)
With
Respect to
AVSS
DRVSS
DRVSS
DRVDD
AVSS
AVSS
DRVSS
AINN
AVSS
AVSS
AVSS
AVSS
AVSS
AVSS
AVSS
AVSS
AVSS
Rating
–0.3 to +3.9
–0.3 to +3.9
–0.3 to +0.3
–3.9 to +3.9
–0.3 to +0.3
–0.3 to AVDD + 0.3
–0.3 to DRVDD + 0.3
AVSS – 0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
–0.3 to AVDD + 0.3
150
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
°C
+150
°C
300
°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent 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
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL CHARACTERISTICS
28-Lead TSSOP
JA = 97.9°C/W
JC = 14.0°C/W
ESD CAUTION
Rev. 0 | Page 5 of 8
AD9203W
Automotive Product
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
DRVSS 1
28 AVDD
DRVDD 2
27 AVSS
(LSB) D0 3
26 AINN
D1 4
25 AINP
D2 5
24 REFBF
D3 6
D5 8
23 VREF
AD9203W
22 REFTF
TOP VIEW
(Not to Scale) 21 PWRCON
D6 9
20 CLAMPIN
D7 10
19 CLAMP
D8 11
18 REFSENSE
(MSB) D9 12
17 STBY
OTR 13
16 3-STATE
DFS 14
15 CLK
10258-003
D4 7
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
DRVSS
DRVDD
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
OTR
DFS
CLK
3-STATE
STBY
REFSENSE
CLAMP
CLAMPIN
PWRCON
REFTF
VREF
REFBF
AINP
AINN
AVSS
AVDD
Description
Digital Ground.
Digital Supply.
Bit 0, Least Significant Bit.
Bit 1.
Bit 2.
Bit 3.
Bit 4.
Bit 5.
Bit 6.
Bit 7.
Bit 8.
Bit 9, Most Significant Bit.
Out-of-Range Indicator.
Data Format Select HI: Twos Complement; LO: Straight Binary.
Clock Input.
HI: High Impedance State Output; LO: Active Digital Output Drives.
HI: Power-Down Mode; LO: Normal Operation.
Reference Select.
HI: Enable Clamp; LO: Open Clamp.
Clamp Signal Input.
Power Control Input.
Top Reference Decoupling.
Reference In/Out.
Bottom Reference Decoupling.
Noninverting Analog Input.
Inverting Analog Input.
Analog Ground.
Analog Supply.
Rev. 0 | Page 6 of 8
Automotive Product
AD9203W
OUTLINE DIMENSIONS
9.80
9.70
9.60
28
15
4.50
4.40
4.30
6.40 BSC
1
14
PIN 1
0.65
BSC
0.15
0.05
COPLANARITY
0.10
0.30
0.19
1.20 MAX
SEATING
PLANE
0.20
0.09
8°
0°
0.75
0.60
0.45
COMPLIANT TO JEDEC STANDARDS MO-153-AE
Figure 4. 28-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-28)
Dimensions shown in millimeters
ORDERING GUIDE
Model1, 2
AD9203WARUZ
AD9203WARUZRL7
Temperature Range
−40°C to +85°C
−40°C to +85°C
Package Description
28-Lead Thin Shrink Small Outline [TSSOP]
28-Lead Thin Shrink Small Outline [TSSOP]
Package Option
RU-28
RU-28
1
Z = RoHS Compliant Part.
W = Qualified for Automotive Applications.
2
AUTOMOTIVE PRODUCTS
The AD9203W models are available with controlled manufacturing to support the quality and reliability requirements of automotive
applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers
should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in
automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to
obtain the specific Automotive Reliability reports for these models.
Rev. 0 | Page 7 of 8
AD9203W
Automotive Product
NOTES
©2011 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10258-0-10/11(0)
Rev. 0 | Page 8 of 8