- 您現在的位置：買賣IC網 > PDF目錄30714 > LA1776M (SANYO SEMICONDUCTOR CO LTD) 2-BAND, AUDIO TUNER, PQFP64 PDF資料下載
參數資料
| 型號： | LA1776M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 調諧器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PQFP64 |
| 封裝： | 14 X 14 MM, QFP-64 |
| 文件頁數： | 8/41頁 |
| 文件大小： | 547K |
| 代理商： | LA1776M |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
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
相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LA1776M_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1776M-MPB-E | 功能描述:調諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數: 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LA177B/HG-2 | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA177B-1-SRG | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA177B-HG-2 | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
發布緊急采購，3分鐘左右您將得到回復。