10-Bit, 40 MSPS, 3 V, 74 mW
Automotive Product
FEATURES
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 f
Out-of-range indicator
Adjustable on-chip voltage reference
IF undersampling up to f
Input range: 1 V to 2 V p-p differential or single-ended
Adjustable power consumption
Internal clamp circuit
Qualified for automotive applications
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
= 20 MHz
IN
= 130 MHz
IN
Analog-to-Digital Converter
AD9203W
FUNCTIONAL BLOCK DIAGRAM
CLKAVDD DRVDD
CLAMP
CLAMPIN
AINP
AINN
REFTF
REFBF
VREF
REFSENSE
SHA GAIN
A/D D/A
REFERENCE
+
–
0.5V
BANDGAP
SHA GAIN
A/D D/A
CORRECTION LOG IC
OUTPUT BUFFERS
Figure 1.
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. 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.
2. High Performance. Maintains better than 9.55 ENOB at
40 MSPS input signal from dc to Nyquist.
3. Ver y Sm a ll P a cka g e . T h e AD9203W is available in a
28-lead TSSOP.
4. Programmable Power. The AD9203W power can be
further reduced by using an external resistor at lower
sample rates.
5. Built-In Clamp Function. Allows dc restoration of video
signals.
AD9203W
10
DRVSSDFSPWRCONAVSS
STBY
A/D
3-STATE
OTR
D9 (MSB)
D0 (LSB)
10258-001
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
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
REVISION HISTORY
10/11—Revision 0: Initial Version
Thermal Characteristics ...............................................................5
ESD Caution...................................................................................5
Pin Configuration and Function Descriptions ..............................6
Outline Dimensions ..........................................................................7
Ordering Guide .............................................................................7
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
MIN
to T
cycle, T
Table 1.
Parameter Symbol Min Typ Max Unit Conditions
RESOLUTION 10 Bits
MAX CONVERSION RATE FS 40 MSPS
PIPELINE DELAY 5.5
DC ACCURACY
Differential Nonlinearity DNL ±0.25 ±0.7 LSB
Integral Nonlinearity INL ±0.65 ±1.4 LSB
Offset Error EZS ±0.6 ±2.8 % FSR
Gain Error EFS ±0.7 ±4.0 % FSR
ANALOG INPUT
Input Voltage Range AIN 1 2 V p-p
Input Capacitance CIN 1.4 pF
Aperture Delay TAP 2.0 ns
Aperture Uncertainty (Jitter) TAJ 1.2 ps rms
Input Bandwidth (–3 dB) BW 390 MHz
Input Referred Noise 0.3 mV Switched, single-ended
INTERNAL REFERENCE
Output Voltage (0.5 V Mode) VREF 0.5 V REFSENSE = VREF
Output Voltage (1 V Mode) VREF 1 V REFSENSE = GND
Output Voltage Tolerance (1 V Mode) ± 5 ± 30 mV
Load Regulation 0.65 1.2 mV 1.0 mA load
POWER SUPPLY
Operating Voltage AVDD 2.7 3.0 3.6 V
DRVDD 2.7 3.0 3.6 V
Analog Supply Current IAVDD 20.1 22.0 mA
Digital Supply Current IDRVDD 4.4 6.0 mA f
9.5 14.0 mA f
Power Consumption 74 84.0 mW f
88.8 108.0 mW f
Power-Down PD 0.65 1.2 mW
Power Supply Rejection Ratio PSRR 0.04 ± 0.25 % FSR
DYNAMIC PERFORMANCE (AIN = 0.5 dBFS)
Signal-to-Noise and Distortion1 SINAD
f = 4.8 MHz 59.7 dB
f = 20 MHz 57.2 59.3 dB
Effective Bits ENOB
f = 4.8 MHz1 9.6 Bits
f = 20 MHz 9.2 9.55 Bits
Signal-to-Noise Ratio SNR
f = 4.8 MHz1 60.0 dB
f = 20 MHz 57.5 59.5 dB
Total Harmonic Distortion THD
f = 4.8MHz −76.0 dB
f = 20 MHz −74.0 −65.0 dB
Spurious-Free Dynamic Range SFDR
f = 4.8 MHz1 80 dB
f = 20 MHz 67.8 78 dB
unless otherwise noted.
MAX
Clock
Cycles
= 4.8 MHz, output bus load = 10 pF
IN
= 20 MHz, output bus load = 20 pF
IN
= 4.8 MHz, output bus load = 10pF
IN
= 20 MHz, output bus load = 20 pF
IN
Rev. 0 | Page 3 of 8
AD9203W Automotive Product
Parameter Symbol Min Typ Max Unit Conditions
Two-Tone Intermodulation Distortion IMD 68 dB f = 44.49 MHz and 45.52 MHz
Differential Phase DP 0.2 Degree NTSC 40 IRE ramp
Differential Gain DG 0.3 %
DIGITAL INPUTS
High Input Voltage VIH 2.0 V
Low Input Voltage V
Clock Pulse Width High 11.25 ns
Clock Pulse Width Low 11.25 ns
Clock Period2 25 ns
DIGITAL OUTPUTS
High-Z Leakage I
Data Valid Delay t
Data Enable Delay t
Data High-Z Delay t
LOGIC OUTPUT (with DRVDD = 3 V)
High Level Output Voltage (IOH = 50 μA) V
High Level Output Voltage (IOH = 0.5 mA) VOH 2.80 V
Low Level Output Voltage (IOL= 1.6 mA) VOL 0.3 V
Low Level Output Voltage (IOL= 50 μA) V
1
Differential Input (2 V p-p).
2
The AD9203W converts at clock rates as low as 20 kHz.
ANALOG
INPUT
0.4 V
IL
± 5.0 μA Output = 0 to DRVDD
OZ
5 ns CL = 20 pF
OD
6 ns CL = 20 pF
DEN
6 ns CL = 20 pF
DHZ
2.95 V
OH
0.05 V
OL
N+1
N
N–1
N+2
N+3
N+4
N+5
N+6
CLOCK
DATA
OUT
N–7N–6N–5N–4
=3ns MIN
T
OD
Figure 2. Timing Diagram
N–3 N–2 N–1 N N+1
7ns MAX
(C
= 20pF)
LOAD
10258-002
Rev. 0 | Page 4 of 8
Automotive Product AD9203W
ABSOLUTE MAXIMUM RATINGS
Table 2.
With
Parameter
AVDD AVSS –0.3 to +3.9 V
DRVDD DRVSS –0.3 to +3.9 V
AVSS DRVSS –0.3 to +0.3 V
AVDD DRVDD –3.9 to +3.9 V
REFCOM AVSS –0.3 to +0.3 V
CLK AVSS –0.3 to AVDD + 0.3 V
Digital Outputs DRVSS –0.3 to DRVDD + 0.3 V
AINP AINN AVSS – 0.3 to AVDD + 0.3 V
VREF AVSS –0.3 to AVDD + 0.3 V
REFSENSE AVSS –0.3 to AVDD + 0.3 V
REFTF, REFBF AVSS –0.3 to AVDD + 0.3 V
STBY AVSS –0.3 to AVDD + 0.3 V
CLAMP AVSS –0.3 to AVDD + 0.3 V
CLAMPIN AVSS –0.3 to AVDD + 0.3 V
PWRCON AVSS –0.3 to AVDD + 0.3 V
DFS AVSS –0.3 to AVDD + 0.3 V
3-STATE AVSS –0.3 to AVDD + 0.3 V
Junction
Temperature
Storage
Temperature
Lead
Temperature
(10 s)
Respect to
150 °C
+150 °C
300 °C
Rating Unit
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
J
= 97.9°C/W
A
= 14.0°C/W
J
C
ESD CAUTION
Rev. 0 | Page 5 of 8
AD9203W Automotive Product
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
DRVSS
2
DRVDD
OTR
DFS
D1
D2
D3
D4
D5
D6
D7
D8
3
4
5
6
AD9203W
7
TOP VIEW
8
(Not to Scale)
9
10
11
12
13
14
(LSB) D0
(MSB) D9
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin Name Description
1 DRVSS Digital Ground.
2 DRVDD Digital Supply.
3 D0 Bit 0, Least Significant Bit.
4 D1 Bit 1.
5 D2 Bit 2.
6 D3 Bit 3.
7 D4 Bit 4.
8 D5 Bit 5.
9 D6 Bit 6.
10 D7 Bit 7.
11 D8 Bit 8.
12 D9 Bit 9, Most Significant Bit.
13 OTR Out-of-Range Indicator.
14 DFS Data Format Select HI: Twos Complement; LO: Straight Binary.
15 CLK Clock Input.
16 3-STATE HI: High Impedance State Output; LO: Active Digital Output Drives.
17 STBY HI: Power-Down Mode; LO: Normal Operation.
18 REFSENSE Reference Select.
19 CLAMP HI: Enable Clamp; LO: Open Clamp.
20 CLAMPIN Clamp Signal Input.
21 PWRCON Power Control Input.
22 REFTF Top Reference Decoupling.
23 VREF Reference In/Out.
24 REFBF Bottom Reference Decoupling.
25 AINP Noninverting Analog Input.
26 AINN Inverting Analog Input.
27 AVSS Analog Ground.
28 AVDD Analog Supply.
AVDD
28
AVSS
27
AINN
26
AINP
25
REFBF
24
VREF
23
REFTF
22
PWRCON
21
CLAMPIN
20
CLAMP
19
REFSENSE
18
STBY
17
3-STATE
16
CLK
15
10258-003
Rev. 0 | Page 6 of 8
Automotive Product AD9203W
C
Y
OUTLINE DIMENSIONS
9.80
9.70
9.60
28
PIN 1
0.65
0.15
0.05
OPLANARIT
0.10
BSC
0.30
0.19
COMPLIANT TO JEDEC STANDARDS MO-153-AE
Figure 4. 28-Lead Thin Shrink Small Outline Package [TSSOP]
1.20 MAX
SEATING
PLANE
15
4.50
4.40
4.30
0.20
0.09
6.40 BSC
8°
0°
0.75
0.60
0.45
141
(RU-28)
Dimensions shown in millimeters
ORDERING GUIDE
1, 2
Model
AD9203WARUZ
AD9203WARUZRL7
1
Z = RoHS Compliant Part.
2
W = Qualified for Automotive Applications.
Temperature Range Package Description Package Option
−40°C to +85°C 28-Lead Thin Shrink Small Outline [TSSOP] RU-28
−40°C to +85°C 28-Lead Thin Shrink Small Outline [TSSOP] RU-28
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
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