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PDF ADA4432-1 Data sheet ( Hoja de datos )
| Número de pieza | ADA4432-1 | |
| Descripción | (ADA4432-1 / ADA4433-1) SD Video Filter Amplifiers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
SD Video Filter Amplifiers
with Output Short-to-Battery Protection
ADA4432-1/ADA4433-1
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.
FUNCTIONAL BLOCK DIAGRAMS
ENA
STB
+VS (LFCSP ONLY)
ADA4432-1
IN ×1
SD
OFFSET
×2
STB
OUT
ENA
ADA4433-1
+IN ×1
SD
–IN
www.DataSheet.co.kr
×1
SD
GND
Figure 1.
+VS
R
+
R
–
STB
2R
STB
STB
2R
–OUT
+OUT
GND
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.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2012 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
Data Sheet
ADA4432-1/ADA4433-1
Parameter
POWER SUPPLY
Power Supply Range1
Quiescent Current
Quiescent Current, Disabled
Quiescent Current, Short-to-Battery
Quiescent Current, Short-to-Ground
PSRR
ENABLE PIN
Input Leakage Current
LOGIC OUTPUT/INPUT LEVELS
STB VOH
STB VOL
ENA VIH
ENA VIL
OPERATING TEMPERATURE RANGE
Test Conditions/Comments
No input signal, no load
ADA4433-1W only: TMIN to TMAX
ENA = 0 V
ADA4433-1W only: TMIN to TMAX
Short-to-battery fault condition: 18 V
Short on far end of output termination (37.5 Ω)
Δ+VS RIPPLE = ±0.3 V, f = dc
ENA = high/low
VOUT ≥ 5.7 V (fault condition)
VOUT ≤ 3 V (normal operation)
Input voltage to enable device
Input voltage to disable device
1 Recommended range for optimal performance. Exceeding this range is not recommended.
Min
2.6
−40
Typ Max
3.6
13.2 18
19
13.5 22
30
18
60
−80
+0.3/−14
3.3
0.02
≥2.4
≤0.6
+125
Unit
V
mA
mA
µA
µA
mA
mA
dB
µA
V
V
V
V
°C
www.DataSheet.co.kr
Rev. A | Page 5 of 28
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Data Sheet
13
12 OVER
11 VOLTAGE
PULSE
10
9
8
7
6
5 STB OUTPUT
4
3
2
1
0
–1
0 200 400 600 800 1000
TIME (ns)
VOUT
1200 1400
1600
Figure 19. STB Output Flag Response Time
11
10
9
8
7
6
–40 –20 0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 20. Supply Current vs. Temperature
3.3
VIN = 1.0V p-p
2.7
2.1
1.5
0.9
0.3
–0.3
0
100 200 300 400 500 600 700 800 900 1000
TIME (ns)
Figure 21. Output Transient Response
ADA4432-1/ADA4433-1
4
STB OUTPUT
RESET POINT
3
2
STB OUTPUT
TRIGGER POINT
1
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
SHORT-TO-BATTERY (V)
Figure 22. STB Output Response vs. Short-to-Battery Voltage on Outputs
0
REFFERED TO OUTPUT
–10
SOT-23
–20
LFCSP
–30
–40
www.DataSheet.co.kr
–50
–60
0.1
1 10
FREQUENCY (MHz)
100
Figure 23. Power Supply Rejection Ratio (PSRR) vs. Frequency
–40
–50
LFCSP
–60
–70
–80
SOT-23
–90
–100
–110
–120
–130
0.1
1 10
FREQUENCY (MHz)
100
Figure 24. Input-to-Output Off (Disabled) Isolation vs. Frequency
Rev. A | Page 11 of 28
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet ADA4432-1.PDF ] | |
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