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NTE7129

Integrated Circuit IF Signal Processing (Super PLL−II VIF + SIF) Circuit for TVs & VCRs

NTE Electronics 

NTE7129

Integrated Circuit

IF Signal Processing (Super PLL−II VIF + SIF)

Circuit for TVs & VCRs

Description:

The NTE7129 is an intercarrier−type VIF + SIF integrated circuit in a 24−Lead DIP type package that

supports excellent sound and image quality. The pin assignment of the NTE7129 is identical to that

of the NTE7130, allowing the NTE7130 to be used for split systems while the NTE7129 is used for

intercarrier systems. In addition, the NTE7129 suppresses Nyaquist buzz interference by using a PLL

(Phase−Lock Loop) detection system with a buzz canceller in order to provide the best sound quality

possible.

Features:

D Excellent Buzz and Buzz−Beat Characteristics due to PLL

D Built−In APC Time Constant Switch

D Duplicate Time Constant System Suited for High−Speed AGC

D Excellent DG and DP Characteristics

D RF AGC Adjustment is Simple

Functions:

VIF Block

D VIF Amplifier

D VCO

D APC Filter

D B/W NC

D AFT

D IF AGC

SIF Block

D Limiter Amplifier

Mute

D Audio Mute (Pin2)

D IS−15 Switch (Pin13)

D PLL Detector

D Equalizer Amplifier

D Lock Detection

D RF AGC

D APC Detector

D Buzz Canceller

D FM Quadrature Detector

D AV Mute (Pin4)

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