Overview
The ADA4432-1BRJZ-R7, produced by Analog Devices Inc., is a single-ended input/single-ended output video filter amplifier. This component is designed to drive long back-terminated cables, making it suitable for various video signal processing applications. It features integrated overvoltage protection, specifically short-to-battery (STB) protection, which safeguards against dc and transient overvoltage events up to 18 V. This protection eliminates the need for large output coupling capacitors, enhancing the overall reliability and efficiency of the device.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Input Voltage Range | 0 to 1.34 V (typ), 0 to 1.47 V (max) | ADA4432-1W only: TMIN to TMAX |
| Input Resistance | >1.0 GΩ | |
| Input Capacitance | 8 pF | |
| Input Bias Current | 35 pA | |
| Output Offset Voltage | 192 mV to 280 mV (typ), 300 mV (max) | VIN = 0 V |
| Output Voltage Swing | 0.28 +VS − 0.42 V (typ), 0.30 +VS − 0.45 V (max) | RL = 150 Ω |
| Linear Output Current | ±37 mA | |
| Short-Circuit Output Current | ±50 mA | |
| Short-to-Battery Overvoltage Protection Range | +VS up to 18 V | |
| Operating Temperature Range | −40°C to +125°C | Recommended range for optimal performance |
Key Features
- Integrated Overvoltage Protection: Short-to-battery (STB) protection up to 18 V, eliminating the need for large output coupling capacitors.
- Single-Ended Input/Output: Designed to drive long back-terminated cables, suitable for various video signal processing applications.
- Low Input Bias Current: 35 pA, ensuring minimal impact on the input signal.
- High Input Resistance: Greater than 1.0 GΩ, reducing the load on the input source.
- Low Output Offset Voltage: 192 mV to 280 mV, ensuring accurate signal reproduction.
- Wide Operating Temperature Range: −40°C to +125°C, suitable for a variety of environmental conditions.
Applications
- Video Signal Processing: Ideal for applications requiring high-quality video signal filtering and amplification, such as in broadcast, medical imaging, and industrial video systems.
- Cable Driving: Capable of driving long back-terminated cables, making it suitable for applications where signal integrity over long distances is critical.
- Industrial and Medical Equipment: Used in various industrial and medical devices where reliable and accurate video signal processing is essential.
Q & A
- What is the primary function of the ADA4432-1BRJZ-R7?
The ADA4432-1BRJZ-R7 is a single-ended input/single-ended output video filter amplifier designed to drive long back-terminated cables and provide high-quality video signal processing.
- What kind of overvoltage protection does the ADA4432-1BRJZ-R7 have?
The ADA4432-1BRJZ-R7 features short-to-battery (STB) overvoltage protection up to 18 V, which protects against dc and transient overvoltage events.
- What is the input voltage range of the ADA4432-1BRJZ-R7?
The input voltage range is typically 0 to 1.34 V and can go up to 1.47 V under maximum conditions.
- What is the output voltage swing of the ADA4432-1BRJZ-R7?
The output voltage swing is typically 0.28 +VS − 0.42 V and can go up to 0.30 +VS − 0.45 V under maximum conditions with a load resistance of 150 Ω.
- What is the operating temperature range of the ADA4432-1BRJZ-R7?
The operating temperature range is −40°C to +125°C, with optimal performance recommended within this range.
- What are some common applications of the ADA4432-1BRJZ-R7?
Common applications include video signal processing in broadcast, medical imaging, and industrial video systems, as well as driving long back-terminated cables.
- What is the input resistance of the ADA4432-1BRJZ-R7?
The input resistance is greater than 1.0 GΩ.
- What is the short-circuit output current of the ADA4432-1BRJZ-R7?
The short-circuit output current is ±50 mA.
- How does the ADA4432-1BRJZ-R7 protect against ground noise?
While the ADA4432-1 is single-ended, the related ADA4433-1 offers differential signal processing, which reduces the effects of ground noise.
- What is the quiescent current of the ADA4432-1BRJZ-R7 under short-to-battery fault conditions?
The quiescent current under short-to-battery fault conditions is 18 mA.
