NJM2268V

Video Amps And Modules Overview

The NJM2268V is a dual video amplifier with integrated 75Ω drivers, designed for S-VHS and HI-BAND VCR applications. It operates on a supply voltage of 4.85 to 9.0V with a typical operating current of 14.0mA. The device features a 7MHz bandwidth and includes one channel with a clamp function (Input Clamp Voltage: 1.79 to 2.03V) and another with a bias type (Input Bias Voltage: 2.56 to 3.12V). It provides a voltage gain of 5.7 to 6.7dB and incorporates sag corrective circuits.

Video Amps And Modules Feature Summary

• Dual-channel architecture with dedicated clamp and bias input types
• Integrated internal driver circuitry for direct connection to 75Ω loads
• Sag corrective function utilizing external capacitors to prevent signal degradation
• Bipolar technology implementation for stable operation

Video Amps And Modules Applications

• S-VHS VCRs
• HI-BAND VCRs
• Video cameras
• TV monitors
• Video disc players

Video Amps And Modules Procurement Notes

Verify the specific package variant required, as the NJM2268 series includes DIP8, DMP8, and SSOP8 options. Confirm that the selected component matches the intended mounting style and pin configuration for your PCB layout. Ensure compatibility with the specified 4.85V to 9.0V operating voltage range during system design validation.

Video Amps And Modules Selection Notes

Select this component when a dual video amplifier with built-in 75Ω drivers is required for consumer video equipment. It is suitable for designs needing both DC level fixing and bias-type amplification within a single package. Consider the 7MHz bandwidth and low power consumption characteristics for portable or battery-operated video devices.

Video Amps And Modules Part Context

The NJM2268 belongs to Nisshinbo Micro Devices' video IC lineup, specifically engineered for analog video signal processing in consumer electronics. It serves as a specialized solution for handling composite or Y signals in recording and playback devices, offering integrated functionality that reduces external component count compared to discrete solutions.

Video Amps And Modules Replacement Considerations

NJM2267V

Video Amps And Modules FAQ

What is the difference between the two input channels?

One channel features a clamp function that fixes the DC level of the video signal, while the other channel is a bias type.

How does the sag corrective function work?

It prevents signal sag caused by coupling capacitors by connecting the SAG terminal to the output terminal through an external capacitor.

Is a resistor required for the clamp type input?

Yes, a 1MΩ resistance between the INPUT and GND pin is required for the clamp type input to prevent unstable pin voltage due to minute currents.