ANALOG DEVICES ADA4432-1, ADA4433-1 Service Manual
with Output Short-to-Battery Protection
ADA4432-1/ADA4433-1
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
Trademarks and registered trademarks are the property of their respective owners.
Fax: 781.461.3113 ©2012 Analog Devices, Inc. All rights reserved.
IN
GND
STB
(LFCSP ONLY)ENA +V
S
×1
×2
STB
ADA4432-1
OFFSET
SD
OUT
10597-001
+IN
GND
STBENA +V
S
R
R
2R
2R
×1
STB
STB
ADA4433-1
SD
–OUT
+OUT
10597-002
–IN
×1
SD
+
–
Data Sheet
FEATURES
Qualified for automotive applications
Output overvoltage (short-to-battery) protection up to 18 V
Short-to-battery output flag for wire diagnostics
Output short-to-ground protection
Fifth-order, low-pass video filter
0.1 dB flatness to 3 MHz
−3 dB bandwidth of 10 MHz
45 dB rejection at 27 MHz
Ultralow power-down current: 13.5 µA typical
Low quiescent current
7.6 mA typical (ADA4432-1)
13.2 mA typical (ADA4433-1)
Low supply voltage: 2.6 V to 3.6 V
Small packaging
8-lead, 3 mm × 3 mm LFCSP
6-lead SOT-23 (ADA4432-1 only)
Wide operating temperature range: −40°C to +125°C
APPLICATIONS
Automotive rearview cameras
Automotive video electronic control units (ECUs)
Surveillance video systems
GENERAL DESCRIPTION
The ADA4432-1 (single-ended output) and ADA4433-1
(differential output) are fully integrated video reconstruction
filters that combine overvoltage protection (short-to-battery [STB]
protection) and short-to-ground (STG) protection on the outputs,
with excellent video specifications and low power consumption.
The combination of STB protection and robust ESD tolerance
allows the ADA4432-1 and the ADA4433-1 to provide superior
protection in the hostile automotive environment.
The ADA4432-1 is a single-ended input/single-ended output
video filter capable of driving long back-terminated cables.
The ADA4433-1 is a fully differential video filter that can be
used as a fully differential input to a differential output or as a
single-ended input to a differential output, allowing it to easily
connect to both differential and single-ended sources. It is
capable of driving twisted pair or coaxial cable with minimal
line attenuation. Differential signal processing reduces the effects
of ground noise, which can plague ground referenced systems.
The ADA4433-1 is ideal for differential signal processing (gain
and filtering) throughout the signal chain, simplifying the
conversion between single-ended and differential components.
Rev. A
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of thi rd parties that may result from its use. Specifications subject to change with out notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SD Video Filter Amplifiers
FUNCTIONAL BLOCK DIAGRAMS
Figure 1.
Figure 2.
The short-to-battery protection integrated into the ADA4432-1
and ADA4433-1 protects against both dc and transient
overvoltage events, caused by an accidental short to a battery
voltage up to 18 V. The Analog Devices, Inc., short-to-battery
protection eliminates the need for large output coupling capacitors
and other complicated circuits used to protect standard video
amplifiers, saving space and cost.
The ADA4432-1 and ADA4433-1 feature a high-order filter with
−3 dB cutoff frequency response at 10 MHz and 45 dB of rejection
at 27 MHz. The ADA4432-1 and ADA4433-1 feature an internally
fixed gain of 2 V/V. This makes the ADA4432-1 and ADA4433-1
ideal for SD video applications, including NTSC and PAL.
The ADA4432-1 and ADA4433-1 operate on single supplies as
low as 2.6 V and as high as 3.6 V while providing the dynamic
range required by the most demanding video systems.
The ADA4432-1 and ADA4433-1 are offered in an 8-lead, 3 mm ×
3 mm LFCSP package. The ADA4432-1 is also available in a
6-lead SOT-23 package. All are rated for operation over the
wide automotive temperature range of −40°C to +125°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
ADA4432-1/ADA4433-1 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagrams ............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
ADA4432-1 Specifications .......................................................... 3
ADA4433-1 Specifications .......................................................... 4
Absolute Maximum Ratings ............................................................ 6
Thermal Resistance ...................................................................... 6
Maximum Power Dissipation ..................................................... 6
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 9
ADA4432-1 Typical Performance Characteristics ................... 9
ADA4433-1 Typical Performance Characteristics ................. 12
Theory of Operation ...................................................................... 15
Short Circuit (Short-to-Ground) Protection .............................. 15
Overvoltage (Short-to-Battery) Protection ................................ 15
Short-to-Battery Output Flag ................................................... 15
ESD Protection ........................................................................... 16
Enable/Disable Modes (ENA Pin) ........................................... 16
Operating Supply Voltage Range.............................................. 16
Applications Information .............................................................. 17
Methods of Transmission .......................................................... 17
Printed Circuit Board (PCB) Layout ....................................... 17
Configuring the ADA4433-1 for Single-Ended Input Signals ... 18
Pin-Compatible ADA4432-1 and ADA4433-1 ...................... 19
Typical Application Circuits ..................................................... 20
Fully DC-Coupled Transmission Line .................................... 22
Low Power Considerations....................................................... 23
Outline Dimensions ....................................................................... 24
Ordering Guide .......................................................................... 25
Automotive Products ................................................................. 25
REVISION HISTORY
5/12—Rev. 0 to Rev. A
Added ADA4432-1 and 6-Lead SOT-23 ......................... Universal
Added Figure 1; Renumbered Sequentially .................................. 1
Added Table 1; Renumbered Sequentially .................................... 3
Changes to Table 2 ............................................................................ 4
Added Figure 4, Figure 5, Table 5, and Table 6 ............................. 7
Added Figure 7 to Figure 24............................................................ 9
Changes to Operating Supply Voltage Range Section ............... 16
Added Methods of Transmission Section, Pseudo Differential
Mode (Unbalanced Source Termination) Section, Figure 43,
Pseudo Differential Mode (Balanced Source Impedance)
Section and Figure 44 ..................................................................... 17
Changed Fully Differential Transmission Mode Section to Fully
Differential Mode Section ............................................................. 17
Added Pin Compatible ADA4432-1 and ADA4433-1 Section,
Example Configuration for Package-Compatible PCB Section,
and Figure 48 to Figure 51 ............................................................ 19
Added Figure 52 ............................................................................. 20
Added Figure 54 ............................................................................. 22
Added Low Power Consideration, Figure 56, and Figure 57.... 23
Updated Outline Dimensions ....................................................... 24
Changes to Ordering Guide .......................................................... 25
4/12—Revision 0: Initial Version
Rev. A | Page 2 of 28
Data Sheet ADA4432-1/ADA4433-1
OUTPUT CHARACTERISTICS
Quiescent Current
No input signal, no load
7.6
10
mA
SPECIFICATIONS
ADA4432-1 SPECIFICATIONS
TA = 25°C, +VS = 3.3 V, RL = 150 Ω, unless otherwise specified.
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth V
−3 dB Large Signal Bandwidth V
ADA4432-1W only: T
1 dB Flatness V
ADA4432-1W only: T
0.1 dB Flatness V
Out-of-Band Rejection f = 27 MHz, V
ADA4432-1W only: T
Differential Gain Modulated 10-step ramp, sync tip at 0 V 0.38 %
Differential Phase Modulated 10-step ramp, sync tip at 0 V 0.69 Degrees
Group Delay Variation f = 100 kHz to 5 MHz 8 ns
Pass Band Gain 5.80 6 6.24 dB
ADA4432-1W only: T
NOISE/HARMONIC PERFORMANCE
Signal-to-Noise Ratio 100% white signal, f = 100 kHz to 5 MHz 70 dB
INPUT CHARACTERISTICS
Input Voltage Range Limited by the output voltage range 0 to 1.34 0 to 1.4 0 to 1.45 V
ADA4432-1W only: T
Input Resistance >1.0 GΩ
Input Capacitance 8 pF
Input Bias Current 35 pA
= 0.2 V p-p 10.5 MHz
OUT
= 2 V p-p 9.3 10.5 MHz
OUT
to T
MIN
MAX
= 2 V p-p 8.3 9.4 MHz
OUT
to T
MIN
MAX
= 2 V p-p 3.3 MHz
OUT
= 2 V p-p 37 43 dB
OUT
to T
MIN
MAX
to T
MIN
MAX
to T
MIN
MAX
8.6 MHz
7.6 MHz
35 dB
5.57 6.44 dB
0 to 1.3 0 to 1.47 V
Output Offset Voltage VIN = 0 V 192 280 mV
ADA4432-1W only: T
MIN
to T
MAX
300 mV
Output Voltage Swing RL = 150 Ω 0.28 +VS − 0.42 V
ADA4432-1W only: T
MIN
to T
MAX
0.30 +VS − 0.45 V
Linear Output Current ±37 mA
Short-Circuit Output Current ±50 mA
SHORT-TO-BAT TERY
Overvoltage Protection Range +VS 18 V
ADA4432-1W only: T
MIN
to T
MAX
+VS 18 V
STB Output Trigger Threshold Back termination = 75 Ω 6.3 7.2 8.1 V
ADA4432-1W only: T
MIN
to T
MAX
6.0 8.4 V
Disconnect Time After the fault is applied 150 ns
Reconnect Time After the fault is removed 300 ns
POWER SUPPLY
Power Supply Range1 2.6 3.6 V
ADA4432-1W only: T
MIN
to T
MAX
13 mA
Quiescent Current, Disabled ENA = 0 V 14 20 µA
ADA4432-1W only: T
MIN
to T
MAX
25 µA
Quiescent Current, Short-to-Battery Short-to-battery fault condition: 18 V 4.6 mA
Quiescent Current, Short to Ground Short on far end of output termination (75 Ω) 47 mA
PSRR Δ+V
= ±0.3 V, f = dc −63 dB
S RIPPLE
ENABLE PIN
Input Leakage Current ENA = high/low +0.3/−14 µA
Rev. A | Page 3 of 28
ADA4432-1/ADA4433-1 Data Sheet
ENA V
Input voltage to disable device
≤0.6 V
ADA4433-1W only: T
to T
39
dB
ADA4433-1W only: T
to T
5.71 6.28
dB
Input Resistance
Differential
800 kΩ
Parameter Test Conditions/Comments Min Typ Max Unit
LOGIC OUTPUT/INPUT LEVELS
STB V
OH
STB V
OL
ENA V
IH
IL
OPERATING TEMPERATURE RANGE −40 +125 °C
1
Recommended range for optimal performance. Exceeding this range is not recommended.
ADA4433-1 SPECIFICATIONS
TA = 25°C, +VS = 3.3 V, V
Table 2.
Parameter Test Conditions/Comments Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth V
−3 dB Large Signal Bandwidth V
ADA4433-1W only: T
1 dB Flatness V
ADA4433-1W only: T
0.1 dB Flatness V
Out-of-Band Rejection f = 27 MHz 41 45 dB
Differential Gain Modulated 10-step ramp, sync tip at 0 V 0.5 %
Differential Phase Modulated 10-step ramp, sync tip at 0 V 1.7 Degrees
Group Delay Variation f = 100 kHz to 5 MHz 8 ns
Pass Band Gain 5.89 6 6.15 dB
NOISE/HARMONIC PERFORMANCE
Signal-to-Noise Ratio 100% white signal, f = 100 kHz to 5 MHz 67 dB
INPUT CHARACTERISTICS
Input Common-Mode Voltage Range 0 to 2.1 0 to 2.2 0 to 2.3 V
ADA4433-1W only: T
= 0.5 V, RL = 150 Ω, unless otherwise specified.
−IN
V
≥ 7.2 V (fault condition) 3.3 V
OUT
V
≤ 3.1 V (normal operation) 0.02 mV
OUT
Input voltage to enable device ≥2.4 V
= 0.2 V p-p 9.9 MHz
OUT
= 2 V p-p 8.8 9.9 MHz
OUT
to T
MIN
MAX
= 2 V p-p 7.7 8.7 MHz
OUT
to T
MIN
MAX
= 2 V p-p 3 MHz
OUT
MIN
MAX
MIN
MAX
to T
MIN
MAX
8.2 MHz
7.2 MHz
0 to 2.0 0 to 2.5 V
Common mode 400 kΩ
Input Capacitance Common mode 1.8 pF
Input Bias Current 30 pA
CMRR V
OUTPUT CHARACTERISTICS
Output Offset Voltage V
ADA4433-1W only: T
Output Voltage Swing Each single-ended output, R
ADA4433-1W only: T
Linear Output Current ±29 mA
Short-Circuit Output Current ±60 mA
Output Balance Error DC to f = 100 kHz, VIN = 0.5 V p-p −50 dB
SHORT-TO-BAT TERY
Protection Range +VS 18 V
ADA4433-1W only: T
STB Output Trigger Threshold Each output back termination = 37.5 Ω 5.0 5.4 5.7 V
ADA4433-1W only: T
Disconnect Time After the fault is applied 150 ns
Reconnect Time After the fault is removed 300 ns
−IN
+IN
= V
= 0.1 V to 1.1 V −55 dB
+IN
= V
= 0 V 1.65 1.9 V
−IN
to T
MIN
MAX
= 150 Ω 0.54 +VS − 0.55 V
L, dm
to T
MIN
MAX
to T
MIN
MAX
to T
MIN
MAX
Rev. A | Page 4 of 28
1.9 V
0.6 +VS – 0.6 V
+VS 18 V
4.9 6.0 V
Data Sheet ADA4432-1/ADA4433-1
Quiescent Current, Disabled
ENA = 0 V
13.5
22
µA
ENA V
Input voltage to disable device
≤0.6 V
Parameter Test Conditions/Comments Min Typ Max Unit
POWER SUPPLY
Power Supply Range1 2.6 3.6 V
Quiescent Current No input signal, no load 13.2 18 mA
ADA4433-1W only: T
MIN
to T
MAX
19 mA
ADA4433-1W only: T
MIN
to T
MAX
30 µA
Quiescent Current, Short-to-Battery Short-to-battery fault condition: 18 V 18 mA
Quiescent Current, Short-to-Ground Short on far end of output termination (37.5 Ω) 60 mA
PSRR Δ+V
= ±0.3 V, f = dc −80 dB
S RIPPLE
ENABLE PIN
Input Leakage Current ENA = high/low +0.3/−14 µA
LOGIC OUTPUT/INPUT LEVELS
STB V
STB V
ENA V
OH
OL
IH
IL
V
≥ 5.7 V (fault condition) 3.3 V
OUT
V
≤ 3 V (normal operation) 0.02 V
OUT
Input voltage to enable device ≥2.4 V
OPERATING TEMPERATURE RANGE −40 +125 °C
1
Recommended range for optimal performance. Exceeding this range is not recommended.
Rev. A | Page 5 of 28
ADA4432-1/ADA4433-1 Data Sheet
0
1
2
3
4
5
–40 –20 0 20 40 60 80 100 120
MAXIMUM POWER DISSIPATION (W)
AMBIENT T E M P E RATURE (ºC)
TJ = 150°C
LFCSP
SOT-23
10597-003
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
Supply Voltage 4 V
Output Common-Mode Voltage 22 V
Input Differential Voltage +V
S
Power Dissipation See Figure 3
Storage Temperature Range −65°C to +125°C
Operating Temperature Range −40°C to +125°C
Lead Temperature (Soldering, 10 sec) 260°C
Junction Temperature 150°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 RESISTANCE
θJA is specified for the device soldered to a high thermal
conductivity 4-layer (2s2p) circuit board, as described in
EIA/JESD 51-7.
The power dissipated in the package (P
quiescent power dissipation and the power dissipated in the
package due to the load drive for all outputs. The quiescent
power is the voltage between the supply pins (V
quiescent current (I
). The power dissipated due to the load drive
S
depends on the particular application. For each output, the
power due to load drive is calculated by multiplying the load
current by the associated voltage drop across the device. The
power dissipated due to the loads is equal to the sum of the
power dissipations due to each individual load. RMS voltages
and currents must be used in these calculations.
Airflow increases heat dissipation, effectively reducing θ
Figure 3 shows the maximum power dissipation in the package
vs. the ambient temperature for the 6-lead SOT-23 (170°C/W)
and the 8-lead LFCSP (50°C/W) on a JEDEC standard 4-layer
board. θ
values are approximate.
JA
) is the sum of the
D
) times the
S
.
JA
Table 4.
Package Type θJA θJC Unit
6-Lead SOT-23 170 Not applicable °C/W
8-Lead LFCSP 50 5 °C/W
MAXIMUM POWER DISSIPATION
The maximum safe power dissipation in the ADA4432-1 and
ADA4433-1 packages are limited by the associated rise in
junction temperature (T
which is the glass transition temperature, the plastic changes its
properties. Exceeding a junction temperature of 150°C for an
extended time can result in changes in the silicon devices,
potentially causing failure.
) on the die. At approximately 150°C,
J
Figure 3. Maximum Power Dissipation vs.
Ambient Temperature for a 4-Layer Board
ESD CAUTION
Rev. A | Page 6 of 28
Data Sheet ADA4432-1/ADA4433-1
5
ENA
Enable Function. Connect to +VS or float for
NOTES
1. NC = NO CONNE C T.
2. THE EXPOSED PAD CAN BE CONNECTED
TO THE GROUND P LANE.
3+V
S
4OUT
1NC
2STB
6 GND
5 NC
8 IN
7 ENA
ADA4432-1
TOP VIEW
(Not to
Scale)
10597-004
IN
1
GND
NOTES:
1. NC = NO CONNE C T.
2
NC
3
+V
S
6
ENA
5
OUT
4
ADA4432-1
TOP VIEW
(Not to S cale)
10597-005
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 4. ADA4432-1 LFCSP Pin Configuration, Top View
Table 5. ADA4432-1 LFCSP Pin Function Descriptions
Pin
Mnemonic Description
No.
1 NC No Connect. Do not connect to this pin.
2 STB Short-to-Battery Indicator Output. A logic
high indicates a short-to-battery condition,
and a logic low indicates normal operation.
3 +VS Positive Power Supply. Bypass with 0.1 µF
capacitor to GND.
4 OUT Amplifier Output.
5 NC No Connect. Do not connect to this pin.
6 GND Power Supply Ground Pin.
7 ENA Enable Function. Connect to +VS or float for
normal operation; connect to GND for
device disable.
8 IN Input.
EPAD The exposed pad can be connected to the
ground plane.
Figure 5. ADA4432-1 SOT-23 Pin Configuration, Top View
Table 6. ADA4432-1 SOT-23 Pin Function Descriptions
Pin
Mnemonic Description
No.
1 IN Input.
2 GND Power Supply Ground Pin.
3 NC No Connect. Do not connect to this pin.
4 OUT Amplifier Output.
normal operation; connect to GND for
device disable.
6 +VS Positive Power Supply. Bypass with 0.1 µF
capacitor to GND.
Rev. A | Page 7 of 28
ADA4432-1/ADA4433-1 Data Sheet
5
−OUT
Inverting Output.
ADA4433-1
NOTES
1. THE EXPOSED
1–IN
2STB
TOP VIEW
(Not to
3+V
S
TO THE GROUND P LANE.
Scale)
4+OUT
PAD CAN BE CONNECTED
8 +IN
7 ENA
6 GND
5 –OUT
10597-006
Figure 6. ADA4433-1 LFCSP Pin Configuration, Top View
Table 7. ADA4433-1 LFCSP Pin Function Descriptions
Pin No. Mnemonic Description
1 −IN Inverting Input.
2 STB Short-to-Battery Indicator Output. A logic high indicates a short-to-battery condition, and a logic low indicates
normal operation.
3 +VS Positive Power Supply. Bypass with a 0.1 µF capacitor to GND.
4 +OUT Noninverting Output.
6 GND Ground.
7 ENA Enable Function. Connect to +VS or float for normal operation; connect to GND for device disable.
8 +IN Noninverting Input.
EPAD The exposed pad can be connected to the ground plane.
Rev. A | Page 8 of 28
Data Sheet ADA4432-1/ADA4433-1
–66
–60
–54
–48
–42
–36
–30
–24
–18
–12
–6
0
6
12
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
V
OUT
= 2.0V p-p
V
OUT
= 0.2V p-p
10597-040
–66
–60
–54
–48
–42
–36
–30
–24
–18
–12
–6
0
6
12
0.1 1 10 100
GAIN (dB)
+125°C
+25°C
–40°C
FREQUENCY (MHz)
V
OUT
= 2.0V p-p
10597-041
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
0.1 1 10
GAIN (dB)
FREQUENCY (MHz)
R
LOAD
= 75Ω
R
LOAD
= 100Ω
R
LOAD
= 150Ω
V
OUT
= 2.0V p-p
10597-042
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
V
OUT
= 2.0V p-p
V
OUT
= 0.2V p-p
10597-048
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
V
OUT
= 2.0V p-p
+125°C
–40°C
+25°C
10597-049
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100
GROUP DELAY (ns)
FREQUENCY (MHz)
10597-050
TYPICAL PERFORMANCE CHARACTERISTICS
ADA4432-1 TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, +VS = 3.3 V, RL = 150 Ω, unless otherwise specified.
Figure 7. Frequency Response at Various Output Amplitudes
Figure 8. Large Signal Frequency Response at Various Temperatures
Figure 10. 1 dB Flatness Response at Various Output Amplitudes
Figure 11. 1 dB Flatness Response at Various Temperatures
Figure 9. 1 dB Flatness Response at Various Load Resistances
Figure 12. Group Delay vs. Frequency
Rev. A | Page 9 of 28
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