Description:

The NTE1790 combines all the functions required for an NTSC color TV system on a 64–Lead DIP shrink type plastic package. This device is designed to have wide application capability, from a fundamental CTV application to a high–end MPX CTV with quasi–parallel SIF system, with minimal external parts and adjustments. A quasi–parallel SIF system assures buzz free sound reproduction.

Features:

PIF Section

• 3–Stage Variable Gain PIF Amplifier

• High Speed Peak AGC with Dual Time Constants

• Single End AFT Output with Defeat Function

• A Delayed RF AGC Output (Reverse AGC)

• Sync Positive Detected Video Output Polarity

• Internal Black/White Noise Inverter Quasi–Parallel Inter Carrier Detector

• 3–Stage Variable Gain Intercarrier IF Amplifier

• Independent Peak AGC

• Intercarrier Detector with 90 deg. Carrier Shifter

SIF Section:

• 3–Stage Limiter Amplifier

• Differential Peak Detector

• Separated Detector Output and Electronic Attenuater Input for Multiplex TV Sound Reception

• Excellent Electronic Attenuater

• Preamplifier with an NF Terminal

Video Section:

• 2nd Order Picture Sharpness (DC Control)

• Contrast Control with Uni–Color Function

• Brightness Control with Pedestal Clamping Circuit (Adjustable DC Restoration Ratio)

• Internal Vertical Blanking

Chroma Section:

• ACC Circuit

• Color Control Circuit

• Uni–Color Control Circuit

• Adjustment Free APC Circuit

• Tint Control Circuit With Sync Pulse Output

• Color Differential Outputs

Deflection Section:

• Excellent Sync Separator

• Adjustment Free Count Down System

• Stable Vertical Synchronization

• Saw–Tooth Type AFC

• Horizontal Pre–Driver

• X–Ray Protector

• Vertical Drive Amplifier