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ZXFV4089

Features: • Various TV systems, PAL, NTSC, SECAM• Buffered output using high quality video amplifier• Gain is set using two external resistors• On chip sample/hold capacitor• 300 MHz bandwidth• 0.02% differential gain• 0.02° differential phase• +/-5V...

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SeekIC No. : 004552391 Detail

ZXFV4089: Features: • Various TV systems, PAL, NTSC, SECAM• Buffered output using high quality video amplifier• Gain is set using two external resistors• On chip sample/hold capacitor&...

ZXFV4089 Data Sheet

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Part Number:
ZXFV4089
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/24

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Product Details

Description



Features:

• Various TV systems, PAL, NTSC, SECAM
• Buffered output using high quality video amplifier
• Gain is set using two external resistors
• On chip sample/hold capacitor
• 300 MHz bandwidth
• 0.02% differential gain
• 0.02° differential phase
• +/-5V supply operation
• 8 mA supply current
• Pin and function compatible with industry standard part




Application

• Black Level Clamp, providing stable intensity in
video systems such as
cameras
image capture
video mixing
displays
• DC restoration of other high frequency signals




Pinout

Connection Diagram




Specifications

Positive Supply voltage VCC to GND -0.5V to +5.5V
Negative Supply Voltage VEE to GND -5.5V to +0.5V
Input voltage, pins 1,2,3 to GNDVEE -0.5V to VCC +0.5V
Output current, pin7 60mA
Current into Vin and HOLD, pins 2 & 4 5mA
Operating Temperature Range -40 to 85 Storage -65 to +150
Operating Ambient Junction temperature TJMAX 150**

**The thermal resistance from the semiconductor die to ambient is typically 120C/W when the SO16 package is mounted on a PCB in free air. The power dissipation of the device when loaded must be designed to keep the device junction temperature below TJMAX.
*During power-up and power-down, these voltage ratings require that signals be applied only when the power supply is connected.




Description

The ZXFV4089 is a DC restoring circuit and low-distortion video amplifier. It is specially designed to provide brightness level stability as a 'black-level clamp' in video systems with very low distortion and low power consumption.

A high fidelity video amplifier is combined with a sample-hold switch circuit using an external coupling capacitor to provide level-shifting of the video output such that a time-gated sample of the waveform is set to be equal to an external reference voltage (usually zero voltage). A buffered TTL/CMOS logic input signal controls the switch.

The gain is set externally by two resistors. In a typical application, the sample-hold circuit is gated on during part of the back-porch interval of an analog video waveform. Then the video waveform is stabilised for the remainder of the line-scan interval.






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