Overview
The ADA4432-1WBCPZ-R7, produced by Analog Devices Inc., is a single-ended output fully integrated video reconstruction filter. This component is designed to provide excellent video specifications, low power consumption, and robust protection features. It combines overvoltage protection (short-to-battery [STB] protection) and short-to-ground (STG) protection on the outputs, making it ideal for use in hostile environments such as automotive systems. The ADA4432-1 is capable of driving long back-terminated cables and operates on single supplies ranging from 2.6 V to 3.6 V, ensuring the dynamic range required by demanding video systems.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Supply Voltage | 2.6 V to 3.6 V | Single supply operation |
| Operating Temperature Range | −40°C to +125°C | Automotive temperature range |
| Input Resistance | >1.0 GΩ | |
| Input Capacitance | 8 pF | |
| Input Bias Current | 35 pA | |
| Output Offset Voltage | 192 mV to 300 mV | VIN = 0 V |
| Output Voltage Swing | 0.28 +VS − 0.42 V | 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 | |
| Filter Cutoff Frequency | −3 dB at 10 MHz | |
| Out-of-Band Rejection | 45 dB at 27 MHz | |
| Gain | Internally fixed gain of 2 V/V | |
| Package Options | 8-lead LFCSP (3mm x 3mm), 6-lead SOT-23 |
Key Features
- Robust Protection: Includes short-to-battery (STB) and short-to-ground (STG) protection, eliminating the need for large output coupling capacitors and other protective circuits.
- Low Power Consumption: Operates with low power, making it suitable for demanding video systems.
- High-Order Filter: Features a fifth-order, low-pass filter with a −3 dB cutoff frequency at 10 MHz and 45 dB of rejection at 27 MHz.
- Fixed Gain: Internally fixed gain of 2 V/V, ideal for SD video applications including NTSC and PAL.
- Wide Operating Temperature Range: Rated for operation over the wide automotive temperature range of −40°C to +125°C.
- Compact Packaging: Available in 8-lead LFCSP (3mm x 3mm) and 6-lead SOT-23 packages.
Applications
The ADA4432-1WBCPZ-R7 is primarily used in automotive video systems due to its robust protection features and ability to operate in harsh environments. It is suitable for various SD video applications, including:
- NTSC and PAL video systems.
- Automotive infotainment and display systems.
- Video transmission lines requiring high signal integrity and protection.
Q & A
- What is the primary function of the ADA4432-1WBCPZ-R7?
The ADA4432-1WBCPZ-R7 is a single-ended output fully integrated video reconstruction filter with built-in overvoltage protection.
- What types of protection does the ADA4432-1WBCPZ-R7 offer?
It offers short-to-battery (STB) and short-to-ground (STG) protection.
- What is the operating voltage range of the ADA4432-1WBCPZ-R7?
The component operates on single supplies ranging from 2.6 V to 3.6 V.
- What is the operating temperature range of the ADA4432-1WBCPZ-R7?
The component is rated for operation over the wide automotive temperature range of −40°C to +125°C.
- What is the cutoff frequency of the ADA4432-1WBCPZ-R7's filter?
The filter has a −3 dB cutoff frequency at 10 MHz.
- What is the out-of-band rejection of the ADA4432-1WBCPZ-R7's filter?
The filter provides 45 dB of rejection at 27 MHz.
- What is the fixed gain of the ADA4432-1WBCPZ-R7?
The component has an internally fixed gain of 2 V/V.
- In what packages is the ADA4432-1WBCPZ-R7 available?
It is available in 8-lead LFCSP (3mm x 3mm) and 6-lead SOT-23 packages.
- What are the typical applications of the ADA4432-1WBCPZ-R7?
It is used in automotive video systems, NTSC and PAL video systems, and video transmission lines requiring high signal integrity and protection.
- How does the ADA4432-1WBCPZ-R7 protect against overvoltage events?
The component integrates short-to-battery protection, which protects against dc and transient overvoltage events up to 18 V.
