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參數(shù)資料
| 型號： | LA1776M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PQFP64 |
| 封裝： | 14 X 14 MM, QFP-64 |
| 文件頁數(shù)： | 12/41頁 |
| 文件大?。?/td> | 547K |
| 代理商： | LA1776M |
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No.8085-2/41
LA1776M
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum Recommended supply voltage
VCC
Pins 5, 9, 40, 46, 54, 59, 60, and 61
8
V
VCCST IND
Pin 39
5
V
Operating supply voltage range
VCC op
7.5 to 8.5
V
Function List
FM Front End (Equivalent to the Sanyo LA1193)
Double input type double balanced mixer, base injection
Pin diode drive AGC output
MOSFET second gate drive AGC output
Keyed AGC adjustment pin
Differential IF amplifier
Wide band AGC sensitivity setting pin, and narrow band AGC sensitivity setting pin
FM IF
IF limiter amplifier
S-meter output (also used for AM) 6-stage pickup
Multipath detection pin (shared FM signal meter)
Quadrature detection
AF preamplifier
AGC output
Band muting
Soft muting adjustment pin
Muting attenuation adjustment pin
IF counter buffer output (also used for AM)
SD (IF counter buffer on level) adjustment pin
SD output (active high) (also used for AM)
Time constant switching during band muting
S-meter shifter
Noise Canceller
High-pass filter (first order)
Delay circuit based low-pass filter (fourth order)
Noise AGC
Pilot signal compensation circuit
Noise sensitivity setting pin
Function for disabling the noise canceller in AM mode
Multiplex Functions
Adjustment-free VCO circuit
Level follower type pilot canceller circuit
HCC (high cut control)
Automatic stereo/mono switching
VCO oscillation stop function (AM mode)
Forced monaural function
SNC (stereo noise controller)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC1 max
Pins 5, 40, and 61
9
V
VCC2 max
Pins 9, 46, 54, 59, and 60
12
V
Allowable power dissipation
Pd max
Ta
≤ 85°C
950
mW
Operating temperature
Topr
–40 to +85
°C
Storage temperature
Tstg
–40 to +150
°C
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