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參數(shù)資料
| 型號： | LA7577N |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 354K |
| 代理商： | LA7577N |
LA7577N
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
Ordering number: EN 4037C
Monolithic Linear IC
Super-split PLL-II VIF and SIF
IF Signal Processor for TV/VTRs
Overview
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 l-
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 amplier
PLL detector
B/W noise canceler
RF AGC
VCO
Equalizer amplier
AFT
APC detector
APC lter
Lock detector
IF AGC
Buzz canceler
1st SIF stage
Preamplier with AGC
1st SIF detector
SIF stage
SIF limiter amplier
FM quadrature detector
Mute stage
Sound mute (pin 2)
AV mute (pin 4)
IS-15 switch (pin 13)
Features
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 eld characteristics
Good differential gain and phase characteristics
RF AGC easily adjusted using a variable resistor
Package Dimensions
unit: mm
3067-DIP24S
[LA7577N]
Specications
Absolute Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
13.8
V
Allowable power dissipation
Pd max
Ta
≤ 50°C
1200
mW
Circuit voltages
V3, V13
VCC
V
V11
VCC
V
V23
VCC
V
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