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参数资料
| 型号： | LA1776M |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 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： | 8/41页 |
| 文件大小： | 547K |
| 代理商： | LA1776M |
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No.8085-16/41
LA1776M
Continued on next page.
Continued from preceding page.
37
36
35
34
Quadrature
detector
VCC
R2
VCC
IF limitter amplifier
34
35
36
Vref: 2.7 V
QD output
Null voltage
When tuned, the voltage between pins 34 and 37,
V34 – 37, will be 0 V.
The band muting function turns on when |V34 – 37| ≥
0.7 V.
38
37
34
Band
muting
C38
500
R1
C34
During FM
reception: on
+
38
Band muting time
constant switching
R1: Resistor that determines the width of the band
muting function
When R1 is larger ... The band becomes narrower
When R1 is smaller ... The band becomes wider
The band muting time constants are determined by
the following components.
During reception: R1, C34, and C38
During seek: R1 and C34
The band muting time constant can be made smaller
by reducing the value of C34. Degradation of total
harmonic distortion characteristics at low
temperatures can be prevented by make C38 larger.
39
5 V
19
AM/FM
SD
Stereo
indicator
Seek/stop
switching
39
AM/FM SD pin
Stereo indicator
V23 is switched by the voltage mode as described
below.
FM mode
5 V: V23 operates in conjunction with the SD
pin and IF counter buffer.
2.5 V: V23 operates as the forcible SD mode
pin.
0 V: Reception mode
AM mode (There are two modes: 0 V or 5 V.)
5 V: Linked operation with the seek SD pin.
2.5 V: Reception mode, no function.
0 V: Reception mode
Pin No.
Pin
Description
Equivalent circuit
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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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