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参数资料
| 型号： | LA1837M |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 调谐器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PDSO30 |
| 封装： | 0.375 INCH, MFP-30 |
| 文件页数： | 5/9页 |
| 文件大小： | 645K |
| 代理商： | LA1837M |
LA1837M
No.8271-5/9
Continued from preceding page.
Pin No.
Pin
voltage
Equivalent circuit
Pin function
10
AM narrow band
ceramic filter
connection
1.3V
Recommended narrow band ceramic filter
BFU450C4N (Murata Mfg. Co., Ltd.)
When the narrow band SD function is not used, bypass this circuit
by connecting a 50
resistor and a 0.047F capacitor in series.
11
FM S-meter
output
0V
RL = 8k
12
AM S-meter
output,
AM SD
sensitivity
adjustment
0V (AM)
The AM SD sensitivity can be adjusted with an external resistor
between this pin and ground.
13
AM/FM IF buffer
output,
Output control
switch (muting
switch)
0V
V13
≤ 0.5V: Reception state
1.4V
≤ V13 ≤ 2.2V: IF buffer output on
V13
≥ 3.5V: IF buffer output and muting on
14
Phase
comparator
low-pass filter
(FM/AM
switching)
VCC-1.4
(FM)
0V (AM)
The IC switches to AM mode when this pin is connected to
ground through a resistor.
Resistor value limits: 2.7k
(when VCC = 7V)
3.9k
(8V) 5.1k (9V)
6.2k
(10V) 7.5k (11V)
15
Pilot detector
low-pass filter
(Forced
monaural)
(VCO stop)
VCC-1.0
When a current of over 50A is sourced by this pin, the IC
switches to forced monaural mode.
The VCO is stopped if this pin is connected to ground.
The resistor value limits are the same as for pin 14.
16
17
18
19
Post amplifier
I/O
Verg
Output impedance ro = 200
Pin 16: right output, pin 17: left output
Inverting input pins
Pin 18: right input, pin 19: left input
RNF = 33k
20
21
Multiplex output
3.5V
Output impedance ro = 3.3k
Pin 20: Right channel deemphasis
Pin 21: Left channel deemphasis
22
Multiplex input
2.9V
Input impedance ri = 20k
23
FM
demodulated
output
2.8V (FM)
2.8V (AM)
Output impedance ro = 3.0k
The separation can be adjusted with an external capacitor
connected between this pin and ground.
The VOsub/VOmain ratio is set to be approximately 0dB.
Continued on next page.
相关PDF资料 |
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| LA1837 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP30 |
| LA1837 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP30 |
| LA1838 | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP30 |
| LA1844M | 2-BAND, AUDIO TUNER, PDIP24 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA1837M_06 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip AM/FM Tuner IC for Home Stereo Systems |
| la1837ml-a1-tlm-e | 制造商:ON Semiconductor 功能描述:AM/FM 1CHIP HOME TUNER - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述:REEL / AM/FM 1CHIP HOME TUNER 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA1837ML-MIT-TLM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA1837ML-TLM-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: |
| LA1837M-MPB-E | 制造商:ON Semiconductor 功能描述:AM/FM 1CHIP HOME TUNER - Ammo Pack 制造商:ON Semiconductor 功能描述:FNFLD / AM/FM 1CHIP HOME TUNER |
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