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參數資料
| 型號： | LA1838 |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP30 |
| 封裝： | SDIP-30 |
| 文件頁數： | 5/9頁 |
| 文件大小： | 110K |
| 代理商： | LA1838 |
Continued from preceding page.
No. 5888-5/9
LA1838
Pin No.
Pin function
Pin voltage
Notes
Equivalent circuit
1.3 V
AM narrow band
CF connection
10
Recommended narrow band CF: BFU450 C4N
(Murata Mfg. Co., Ltd.)
When the narrow band SD function is not used,
bypass this circuit with a 50
resistor and a
0.047 F capacitor in series.
10
A10640
0 V
FM S-meter output
11
RL = 8 k
11
A10641
0 V (AM)
AM S-meter
output
12
The AM SD sensitivity is adjusted with an external
resistor connected between this pin and ground
12
28
A10642
0 V
AM/FM IF buffer
output,
Output control
switch
(mute switch)
13
V13
≤ 0.5 V: Reception state
1.4 V
≤ V13 ≤ 2.2 V: IF buffer output on
V13
≥ 3.5 V: IF buffer output and muting on
13
A10643
VCC – 1.4 (FM)
0 V (AM)
Phase comparator
low-pass filter
(AM/FM switching)
14
The device operates in AM mode when this pin is
connected to ground through a resistor.
Limit values for the resistor:
2.7 k
(When VCC = 7 V)
3.9 k
(8 V), 5.1 k (9 V)
6.2 k
(10 V), 7.5 k (11 V)
14
A10644
VCC – 1.0
Pilot detector low-
pass filter (Forced
mono) (VCO stop)
15
The device is forced to monaural when a current of
over 50 A flows from this pin.
The VCO is stopped if this pin is connected to
ground.
The limit values for the resistor are the same as
those for pin 14.
15
A10645
Vreg
Post-amplifier
inputs and outputs
16
17
18
19
Output impedance ro = 200
Pin 16: Right output, pin 17: Left output
Inverting input pins
Pin 18: Right input, pin 19: Left input
RNF = 33 k
16
18
19
17
A10646
3.5 V
MPS outputs
20
21
Output impedance ro = 3.3 k
Pin 20: Right deemphasis
Pin 21: Left deemphasis
20
21
A10647
Continued on next page.
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PDF描述 |
|---|---|
| LA1844M | 2-BAND, AUDIO TUNER, PDIP24 |
| LA1844M | 2-BAND, AUDIO TUNER, PDIP24 |
| LA1844 | 2-BAND, AUDIO TUNER, PDSO24 |
| LA1844 | 2-BAND, AUDIO TUNER, PDSO24 |
| LA1845NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LA183B-1-230-A-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-C-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-D | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-E | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA183B-1-230-E-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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