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参数资料
| 型号： | LA1787M |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封装： | 14 X 14 MM, QFP-64 |
| 文件页数： | 2/54页 |
| 文件大小： | 606K |
| 代理商： | LA1787M |
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No. 6655-10/54
LA1787M
Pin No.
Function
Description
Equivalent circuit
23
+
–
+
–
+
–
4.9V
50k
150
50F
1.3V
10k
51k
STOP
IF
BUFF.
Forced
SD: 2.5V
SEEK
5V
SD
SW
VCC
AM MUTE
IF counter
buffer
A13568
32
24
10k
10k
VCC
AM/FM
SW
FM
S-meter
AM
S-meter
Outputs a 1-mA
current during AM
reception
AM/FM
SW
MRC
A13569
26
100k
VDD
AM/FM
SD
Stereo
indicator
Seek/stop
switching
A13570
Continued from preceding page.
Continued on next page.
This pin functions both as the IF
counter buffer (AC output) and as
the seek/stop switch pin.
The voltage V23 switches
between the following three
modes.
23
IF counter buffer seek/stop
During FM reception:
switching
5 V:
Seek mode
2.5 V: Forced SD mode
0 V:
Reception mode
AM reception
(two modes: 0 and 5 V)
5 V:
Seek mode
0 V:
Reception mode
24
AM/FM signal meter
Fixed-current drive signal meter
output
In AM mode, pin 32 outputs a
32
Dedicated FM signal meter
1-mA current. Thus the HCC
circuit is turned off.
The voltage V23 switches
between three modes as follows.
FM reception:
5 V:
The SD pin operates linked
to the IF counter buffer.
26
Stereo indicator for the SD pin
2.5 V: Forced SD mode: operates
as the SD pin.
0.7 V: Reception mode: stereo
indicator
AM reception: (two modes: 0 and 5 V)
5 V:
Operates as the seek SD pin.
0 V:
Reception mode. Not used.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA1787M_09 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1787M-MPB-E | 功能描述:调谐器 CAR RADIO TUNER 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: |
| LA1787NM | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM_09 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM-MPB-E | 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays 制造商:ON Semiconductor 功能描述:FTRAY / ANALOG CAR RADIO TUNER |
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