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參數(shù)資料
| 型號(hào)： | LA1838 |
| 元件分類(lèi)： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP30 |
| 封裝： | SDIP-30 |
| 文件頁(yè)數(shù)： | 6/9頁(yè) |
| 文件大小： | 110K |
| 代理商： | LA1838 |
Continued from preceding page.
No. 5888-6/9
LA1838
Pin No.
Pin function
Pin voltage
Notes
Equivalent circuit
2.9 V
MPX input
22
Input impedance ri = 20 k
22
A10648
2.8 V (FM)
2.8 V (AM)
FM demodulator
output
23
Output impedance ro = 3.0 k
The channel separation can be adjusted with an
external capacitor connected between this pin and
ground.
The VO sub/VO main ratio is set to be about 0 dB.
23
A10649
0 V (FM)
0.5 V (AM)
AM detector
output
24
Output impedance ro = 3.3 k
The AM frequency characteristics can be adjusted
by modifying the time constant of the circuit
connected between this pin and pin 22 and
between this pin and ground.
A10650
24
0 V (FM)
0.5 V (AM)
AM AGC
25
The resistance of the built-in resistor R is 11 k
25
A10651
Vreg
AFC
26
The FM SD bandwidth can be adjusted with the
external resistor connected between this pin and
pin 28
26
A10652
Vreg
AM RF input
27
Must be used at the same potential as pin 28
27
A10653
Vreg
REG
28
Vreg = 3.6 V
28
A10654
Vreg
OSC
29
Connect the oscillator coil between this pin and
pin 28
29
A10655
1.6 V (FM)
1.3 V (AM)
Oscillator buffer
output,
FM SD sensitivity
adjustment
30
The FM SD sensitivity can be adjusted with an
external resistor connected between this pin and
ground.
Output impedance ro = 200
30
A10656
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA183B-1-230-A-PF | 制造商:LIGITEK 制造商全稱(chēng):LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-C-PF | 制造商:LIGITEK 制造商全稱(chēng):LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-D | 制造商:LIGITEK 制造商全稱(chēng):LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-E | 制造商:LIGITEK 制造商全稱(chēng):LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-E-PF | 制造商:LIGITEK 制造商全稱(chēng):LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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