LA1837(1997) データシートの表示（PDF） - SANYO -> Panasonic
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LA1837 Datasheet PDF : 9 Pages
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LA1837
Electrical Characteristics at Ta = 25°C, VCC = 9 V, in the specified Test Circuit
Parameter
Symbol
Conditions
[FM Mono Characteristics] fc = 10.7 MHz, fm = 1 kHz, with the coil adjusted so that VAFC – VREG = 0 V
Current drain
ICCO-FM
With no input
Demodulation output
VOFM
100 dBµ, 100% mod. The pin 16 output
Channel balance
C.B-mono 100 dBµ, 100% mod. The pin 16 output/pin 17 output
Total harmonic distortion (mono)
Total harmonic distortion (mono)
Signal-to-noise ratio
AM rejection ratio
THDFM(1)
THDFM(2)
S/NFM
AMR
100 dBµ, 100% mod. The pin 16 output
100 dBµ, 200% mod. The pin 16 output
100 dBµ, 100% mod. The pin 16 output
100 dBµ, AM 30 % mod. The pin 16 output
Limiting input voltage
–3 dBL.S.
100 dBµ, 100% mod. Referenced to the output.
The input such that the output is down –3 dB.
LED sensitivity
LED bandwidth
IF count buffer output
S-meter output
Muting attenuation
SDOn-FM
SDBW
VIFBuff-FM
VSM-FM(1)
VSM-FM(2)
Mute-Att
100 dBµ
100 dBµ. The pin 13 output
0 dBµ. The pin 11 output
100 dBµ. The pin 11 output
100 dBµ, 100% mod. The pin 16 output
[FM Stereo Characteristics] fc = 10.7 MHz, 100 dBµ, fm = 1 kHz, L + R = 90%, Pilot = 10%
Separation (left)
Separation (right)
Stereo on level
Stereo off level
Total harmonic distortion (main)
SepL
SepR
STON
STOFF
THD-main
L mod. The pin 16 output/pin 17 output
R mod. The pin 17 output/pin 16 output
The pilot modulation such that V7 is under 0.7 V.
The pilot modulation such that V7 is over 4.5 V.
L+R mod. The pin 16 output
Adjacent channel interference
rejection ratio
Brej-3rd
Brej-5th
fs = 113 kHz, Vs = 90 %, Pilot = 10 %, The pin
16 output vs. the L-R mod. 1 kHz demodulated output
fs = 189 kHz, Vs = 90 %, Pilot = 10 %, The pin
16 output vs. the L-R mod. 1 kHz demodulated output
[AM Characteristics] fc = 1000 kHz, fm = 1 kHz
Current drain
Detector output
Signal-to-noise ratio
ICCO-AM
VOAM(1)
VOAM(2)
S/NAM(1)
S/NAM(2)
Total harmonic distortion (mono)
LED sensitivity
Local oscillator buffer output
IF counter buffer output
ST-IF output
THDAM(1)
THDAM(2)
SDOn-AM
VOSC-AM
VIFBuff-AM
VSTIF-AM
S-meter output
VSM-AM
With no input
23 dBµ, 30% mod. The pin 16 output
80 dBµ, 30% mod. The pin 16 output
23 dBµ, 30% mod. The pin 16 output
80 dBµ, 30% mod. The pin 16 output
80 dBµ, 30% mod. The pin 16 output
80 dBµ, 80% mod. The pin 16 output
With no input. The pin 30 output
80 dBµ, no modulation. The pin 13 output
80 dBµ, no modulation. The pin 7 output
0 dBµ, no modulation.
min
18
730
–1.5
72
45
26
51
85
80
0
3.6
75
30
30
1.3
15
100
200
18
49
17
110
160
16
0
Ratings
typ
31
1100
0
0.3
1.0
80
65
32
60
120
120
0.1
4.3
85
45
45
2.7
1.5
0.3
40
40
25
180
320
22
55
0.4
1.0
27
160
220
34
0
Unit
max
44
1460
+1.5
1.3
5
mA
mVrms
dB
%
%
dB
dB
38 dBµ
69 dBµ
170 kHz
160 mVrms
0.5
V
5.0
V
dB
dB
dB
5
%
%
1.3
%
dB
dB
35 mA
360 mVrms
500 mVrms
dB
dB
1.2
%
4.0
%
37 dBµ
220 mVrms
300 mVrms
48 mVrms
0.2
V
Pd max – Ta
Ambient temperature, Ta – °C
No. 5688-2/9
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