LA7577N Datasheet, PDF (1/16 Pages) Sanyo Semicon Device – Super-split PLL-II VIF and SIF IF Signal Processor for TV/VTRs

Ordering number: EN 4037C
Monolithic Linear IC
LA7577N
Super-split PLL-II VIF and SIF
IF Signal Processor for TV/VTRs
Overview
Features
The LA7577N is a high tone quality and high picture qual-
ity, video IF and sound IF IC. It employs split processing
of the video IF signal and sound IF signal using SAW fil-
ters and a PLL detector. Further, the PLL detector incorpo-
rates a buzz canceler for Nyquist buzz interference
suppression to achieve high tone quality.
Functions
VIF stage
• VIF amplifier
• PLL detector
• B/W noise canceler
• RF AGC
• VCO
• Equalizer amplifier
• AFT
• APC detector
• APC filter
• Lock detector
• IF AGC
• Buzz canceler
• Employs split processing for wide bandwidth video
characteristics
• PLL detector with buzz canceler for excellent buzz and
buzz beat characteristics
• APC time constant switch built-in
• High-speed AGC supports double time constant method
• SIF carrier level AGC in the 1st SIF stage for good SIF
weak electric field characteristics
• Good differential gain and phase characteristics
• RF AGC easily adjusted using a variable resistor
Package Dimensions
unit: mm
3067-DIP24S
[LA7577N]
1st SIF stage
• Preamplifier with AGC
• 1st SIF detector
SIF stage
• SIF limiter amplifier
• FM quadrature detector
Mute stage
• Sound mute (pin 2)
• AV mute (pin 4)
• IS-15 switch (pin 13)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Circuit voltages
Symbol
V_CC max
Pd max
V₃, V₁₃
V₁₁
V₂₃
Conditions
Ta ≤ 50°C
Ratings
Unit
13.8
V
1200
mW
V_CC
V
V_CC
V
V_CC
V
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
60597HA(ID) / 11795TH(ID) No. 4037—1/16