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参数资料
| 型号： | LA1776M |
| 元件分类： | 调谐器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PQFP64 |
| 封装： | 14 X 14 MM, QFP-64 |
| 文件页数： | 16/41页 |
| 文件大小： | 547K |
| 代理商： | LA1776M |
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No.8085-23/41
LA1776M
Usage Notes
1. AM/FM Switching
Pin 5 is used for switching between AM and FM (dedicated FM oscillator VCC)
FM mode: When the pin 5 voltage is greater than 4 V.
AM mode: When the pin 5 voltage is less than 4 V.
2. Pin 39: AM/FM SD and Stereo Indicator
Pin 39 is used both for AM and FM station detection and as a stereo indicator.
FM mode
5 V: Operates as the SD pin, coupled to the IF counter buffer.
2.5 V: Operates in forced SD mode.
0 V: Reception mode
AM mode (two modes: 0 V and 5 V)
5 V: Operates coupled as the seek SD pin
2.5 V: Reception mode, no function
0 V: Reception mode
3. Front End
Notes on interface characteristics
Like the previous Sanyo products, the LA1776M includes the 3 D (triple dimension) AGC circuit. This circuit
allow the LA1776M to achieve at the same time both good three-signal interference characteristics (intermodulation
characteristics) and two-signal sensitivity suppression characteristics.
3-1. Intermodulation characteristics
The LA1776M prevents intermodulation from occurring by applying dual high-band AGC.
V5 VCC
4
3
5
FM OSC
FM/AM SW
AM/FM SW
F
E
G
N
D
F
M
O
S
C
F
M
8
V
/
50
60
70
80
90
100
110
-5
-4
-3
-2
-1
0
1
2
3
4
5
A
G
C
o
n
s
e
n
s
it
iv
it
y
Keyed AGC (10 K)
Narrow AGC (47 p)
f [MHz]
Center frequency: 98.1 MHz
Keyed AGC (43 pin) = 10 K
Wide AGC (47 p)
相关PDF资料 |
PDF描述 |
|---|---|
| LA1776M | 2-BAND, AUDIO TUNER, PQFP64 |
| LA1780M | 2-BAND, AUDIO TUNER, PQFP64 |
| LA1781M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1784M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LA1776M_09 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1776M-MPB-E | 功能描述:调谐器 RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| LA177B/HG-2 | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA177B-1-SRG | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA177B-HG-2 | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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