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參數(shù)資料
| 型號： | LA1781M |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封裝： | 14 X 14 MM, QIP-64 |
| 文件頁數(shù)： | 34/48頁 |
| 文件大小： | 508K |
| 代理商： | LA1781M |
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LA1781M
No.6038-4/48
Package Dimensions
unit : mm (typ)
3159A
Function List
1. FM Front End (Equivalent to the Sanyo LA1193)
4. Multiplex Functions
(1) Double input type double balanced mixer
(1) Adjustment-free VCO circuit
(2) Pin diode drive AGC output
(2) Level follower type pilot canceller circuit
(3) MOSFET second gate drive AGC output
(3) HCC (high cut control)
(4) Keyed AGC adjustment pin
(4) Automatic stereo/mono switching
(5) Differential IF amplifier
(5) VCO oscillation stop function (AM mode)
(6) Wide band AGC sensitivity setting pin, and narrow
(6) Forced monaural
band AGC sensitivity setting pin
(7) SNC (stereo noise controller)
(7) Local oscillator
(8) Stereo display pin
(9) Anti-birdie filter
2. FM IF
(1) IF limiter amplifier
5. AM
(2) S-meter output (also used for AM) 6-stage pickup
(1) Double balanced mixer (1st, 2nd)
(3) Multipath detection pin (shared FM signal meter)
(2) IF amplifier
(4) Quadrature detection
(3) Detection
(5) AF preamplifier
(4) RF AGC (narrow/wide)
(6) AGC output
(5) Pin diode drive pin
(7) Band muting
(6) IF AGC
(8) Weak input muting
(7) Signal meter output (also used for FM)
(9) Soft muting adjustment pin
(8) Local oscillator circuits (first and second)
(10) Muting attenuation adjustment pin
(9) Local oscillator buffer output
(11) IF counter buffer output (also used for AM)
(10) IF counter buffer output (also used by the FM IF)
(12) SD (IF counter buffer on level) adjustment pin
(11) SD (IF counter buffer on level) adjustment pin
(13) SD output (active high) (also used for AM)
(12) SD output (active high) (also used for AM)
(13) Wide AGC
3. Noise Canceller
(14) Detection output frequency characteristics
(1) High-pass filter (first order)
adjustment pin (low cut, high deemphasis)
(2) Delay circuit based low-pass filter (fourth order)
(15) AM stereo buffer
(3) Noise AGC
(4) Pilot signal compensation circuit
6. MRC (multipath noise rejection circuit)
(5) Noise sensitivity setting pin
(6) Function for disabling the noise canceller in AM
7. AM/FM switching output (linked to the FM VCC)
mode
SANYO : QIP64E(14X14)
14.0
17.2
14.
0
17.
2
0.15
0.35
0.
8
(2.
7)
3.
0max
0.
1
0.8
(1.0)
116
17
32
33
48
49
64
Pd max -- Ta
0
400
300
600
500
800
900
950
700
200
100
1000
--40
--20
80
60
20
40
0
100
Ambient temperature, Ta --
°C
Allowable
power
dissipation,
Pd
max
-
mW
Mounted on a specified board :
40
× 80 × 1.3mm3
glass epoxy board
Independent IC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1781M_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Car Radios Single-Chip Tuner IC |
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| LA1781MD-B-MPB-E | 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LA1781ML-MPB-E | 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
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