LA1837M Datasheet, PDF (2/9 Pages) Sanyo Semicon Device – LA1837M

Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage range
Symbol
VCC
VCC op
LA1837M
Conditions
Electrical Characteristics at Ta = 25°C VCC = 9.0V, in the specified circuit.
Parameter
Symbol
Conditions
[FM Mono Characteristics] fc = 10.7MHz, fm = 1kHz, with the coil adjusted so that VAFC - VREG = 0V.
Current drain
ICCO-FM
No input
Demodulator output
VOFM
100dBµ, 100% mod, pin 16 output
Channel balance
C.B-mono
100dBµ, 100% mod, pin 16 output / pin 17 output
Total harmonic
distortion (mono)
Signal-to-noise ratio
AM rejection ratio
THDFM1
THDFM2
S/NFM
AMR
100dBµ, 100% mod, pin 16 output
100dBµ, 200% mod, pin 16 output
100dBµ, 100% mod, pin 16 output
100dBµ, AM 30% mod, pin 16 output
Input limiting voltage
LED on sensitivity
LED on bandwidth
IF counter buffer output
S-meter output
Muting attenuation
-3dBL.S
SDON-FM
SDBW
VIFBUFF-FM
VSM _FM1
VSM _FM2
Mute Alt
Referenced to 100dBµ, 100% mod, the input for output
is -3dB down.
100dBµ
100dBµ, pin 13 output
0dBµ, pin 11 output
100dBµ, pin 11 output
100dBµ, 100% mod, the pin 16 output
[FM Stereo Characteristics] fc = 10.7MHz, 100dBμ, fm = 1kHz, L+R = 90%, pilot = 10%
Separation: L
SepL
Lmod. pin 16 output / pin 17 output
Separation: R
SepR
Rmod. pin 17 output / pin 16 output
Stereo on level
Stereo off level
Total harmonic
distortion (main)
Adjacent channel
interference rejection
ratio
[AM Characteristics]
STON
STOFF
THD main
Brej-3rd
Brej-5th
The pilot mod such that V7 < 0.7V
The pilot mod such that V7 > 4.5V
L+R mod. Pin 16 output
fs = 113kHz, Vs = 90%, Pilot = 10%
Pin 16 output, versus L-R mod. 1kHz demodulator output
fs = 189kHz, Vs = 90%, Pilot = 10%
Pin 16 output, versus L-R mod. 1kHz demodulator output
Current drain
Output detector
Signal-to-noise ratio
Total harmonic
distortion
LED-ON sensitivity
Oscillator buffer output
IF counter buffer output
ST IF output
S-meter output
ICCO-AM
VOAM1
VOAM2
S/N _AM1
S/N _AM 2
THD _AM 1
THD _AM 2
SDOn-AM
VOSC-AM
VIFBuff-AM
VSTIF-AM
VSM-AM
No input
23dBµ, 30% mod, pin 16 output
80dBµ, 30% mod, pin 16 output
23dBµ, 30% mod, pin 16 output
80dBµ, 30% mod, pin 16 output
80dBµ, 30% mod, pin 16 output
80dBµ, 80% mod, pin 16 output
No input, pin 30 output
80dBµ, non-mod, pin 13 output
80dBµ, non-mod, pin 7 output
0dBµ, non-mod
Ratings
Unit
9
V
7.0 to 11.0
V
Ratings
Unit
min
typ
max
18
31
44
mA
730 1100 1460 mVrms
-1.5
0
+1.5
dB
0.3
1.3
%
1.0
5.0
%
72
80
dB
45
65
dB
26
32
38
dBμ
51
60
69
dBμ
85
120
170
kHz
80
120
160 mVrms
0
0.1
0.5
V
3.6
4.3
5.0
V
75
85
dB
30
45
dB
30
45
dB
1.3
2.7
5.0
%
1.5
%
0.3
1.3
%
40
dB
40
dB
15
25
35
mA
100
180
360 mVrms
200
320
500 mVrms
18
22
dB
49
55
dB
0.4
1.2
%
1.0
4.0
%
17
27
37
dBμ
110
160
220 mVrms
160
220
300 mVrms
16
34
48 mVrms
0
0
0.2
V
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