ADA4433-1
Fully Differential SD Video Filter Amplifier with Output Short-to-Battery Protection
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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
- 13.2 mA typical
- Low supply voltage: 2.6 V to 3.6 V
- Small packaging
- 8-lead, 3 mm × 3 mm LFCSP
- Wide operating temperature range: −40°C to +125°C
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The ADA4433-1 is a differential output, fully integrated video reconstruction filter that combines 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 ADA4433-1 to provide superior protection in the hostile automotive environment.
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.
The short-to-battery protection integrated into the 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 ADA4433-1 features a high-order filter with −3 dB cutoff frequency response at 10 MHz and 45 dB of rejection at 27 MHz. The ADA4433-1 featurea an internally fixed gain of 2 V/V. This makes the ADA4433-1 ideal for SD video applications, including NTSC and PAL.
The ADA4433-1 operates 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 ADA4433-1 is offered in an 8-lead, 3 mm × 3 mm LFCSP package, rated for operation over the wide automotive temperature range of −40°C to +125°C.
Appplications
- Automotive rearview cameras
- Automotive video electronic control units (ECUs)
- Surveillance video systems
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ADA4433-1
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| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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| ADA4433-1BCPZ-R2 |
8-Lead LFCSP (3mm x 3mm w/ EP)
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| ADA4433-1BCPZ-R7 |
8-Lead LFCSP (3mm x 3mm w/ EP)
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| ADA4433-1WBCPZ-R7 |
8-Lead LFCSP (3mm x 3mm w/ EP)
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8-Lead LFCSP (3mm x 3mm w/ EP)
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8-Lead LFCSP (3mm x 3mm w/ EP)
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Ultra Librarian
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8-Lead LFCSP (3mm x 3mm w/ EP)
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PCN
Jul 29, 2014
- 13_0205
Assembly and Test Transfer of Select 3x3mm LFCSP Products to Amkor Philippines
ADA4433-1BCPZ-R7
ADA4433-1WBCPZ-R7
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Filter by Model
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Jul 29, 2014
- 13_0205
Assembly and Test Transfer of Select 3x3mm LFCSP Products to Amkor Philippines
ADA4433-1BCPZ-R7
ADA4433-1WBCPZ-R7
PRODUCTION
Software & Part Ecosystem
Evaluation Kits 1
EVAL-ADA4433-1
ADA4433-1 Evaluation Board
Product Detail
The ADA4433-1BCP-EBZ evaluation board makes it easy for designers to quickly observe the performance of the ADA4433-1 video filter in real-world applications. Input signals are applied through the SMA jacks (+IN, −IN), and outputs are taken from SMA jacks (+OUT, −OUT). Power is applied through the red +VS test point. Ground the black GND test point. The ADA4433-1 operates on a single-supply voltage ranging from 2.6 V to 3.6 V, and draws approximately 14 mA.
The evaluation board is configured with an input termination resistor (R1) of 75 Ω. Chose this resistor to provide the correct termination or load for the input signal source. For example, current-mode video digital-to-analog converter (DAC) outputs that require a 300 Ω load resistance. In this case, replace R1 with a 300 Ω resistor.
The ADA4433-1 inputs can be driven by either a balanced or an unbalanced source. For unbalanced signals, bias the unused input (−IN) to approximately 0.5 V. For a 3.3 V supply, this can be achieved by using the on-board voltage divider by setting R2 = 1.33 kΩ and R3 = 7.5 kΩ. Populate the decoupling capacitor (C3) with 0.1 μF to help eliminate noise. By default, the ADA4433-1BCP-EBZ is configured for single-ended input operation where the input signal is applied to SMA (+IN). For a balanced input configuration, R4 provides placement for the differential termination resistor.
The ADA4433-1BCP-EBZ evaluation board is configured to drive a back terminated 150 Ω differential load. Series back-termination resistors (37.5 Ω each) are installed on both outputs. These can be changed to match the actual differential load impedance.
The ADA4433-1 can be powered down (disabled) by grounding the green ENA test point at the top left of the evaluation board. On the evaluation board, this pin is pulled up to +VS through the 4.7 kÙ resistor (R7).
In normal operation, the short-to-battery output flag (STB) is held at a logic low. During a short-to-battery fault condition (where a voltage ranging from 5 V to 18 V is applied to either or both outputs), the STB output voltage is driven to a logic high state. The STB yellow test point (lower left side of the evaluation board) can be used to monitor the short-to-battery output flag function.
Evaluation Kits1
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SPICE Model
