LA1845NV Datasheet, PDF (2/10 Pages) Sanyo Semicon Device – Single-Chip Home Stereo IC

LA1845NV
Electrical Characteristics • Operating Characteristics at VCC = 8V, in the specified test circuit.
FM Mono Characteristics at fc = 10.7MHz, Vi = 100dBµ, fm = 1kHz, Modulation = 75kHz
Parameter
Current Drain
Demodulator Output
Total Harmonic Distortion
Signal-to-Noise Ratio
AM Rejection Ratio
3dB Sensitivity
SD Sensitivity
IF Counter Buffer Output
Mute Attenuation
Conditions
With no input signal
100dBµ, 100% modulation, fm = 1kHz
100dBµ, 100% modulation, fm = 1kHz
100dBµ, 100% modulation, fm = 1kHz
100dBµ, AM = 30% modulation, fm = 1kHz
100dBµ, 100% modulation, fm = 1kHz Output reference,
-3dB input
0% modulation
100dBµ
100dBµ, 100% modulation, fm = 1kHz
min
20
230
73
47
38
200
Ratings
typ
30
360
0.35
80
65
32
47
275
76
max
40
460
1.5
40
56
400
Unit
mA
mVrms
%
dB
dB
dBµ
dBµ
mVrms
dB
FM Stereo Characteristics at fc = 10.7MHz, Vi = 100dBµ, L+R = 90%, Pilot = 10%, fm = 1kHz
Parameter
Conditions
Separation
Stereo On Level
Total Harmonic Distortion
Adjacent Channel Rejection Ratio 1
Adjacent Channel Rejection Ratio 2
Carrier Leak
L+R = 90%, Pilot = 10%, fm = 1kHz
Pilot input
Pilot input
fs = 113kHz, VS = 90%, Pilot = 10% ;
The left-right modulation, demodulated output
fs = 189kHz, VS = 90%, Pilot = 10% ;
The left-right modulation, demodulated output
L+R = 90%, Pilot = 10% reference, Pilot = 10% output
Ratings
Unit
min
typ
max
30
42
dB
1.5
3.5
5.5
%
0.45
1.5
%
36
dB
41
dB
38
44
dB
AM Characteristics at fc = 1000kHz, Vi = 80dBµ, fm = 1kHz, Modulation = 30%
Parameter
Current Drain
Detector Output 1
Detector Output 2
Signal-to-Noise Ratio 1
Signal-to-Noise Ratio 2
Total Harmonic Distortion 1
Total Harmonic Distortion 2
SD Sensitivity
Local Oscillator Buffer Output
IF Counter Buffer Output
Conditions
With no input signal
23dBµ, 30% modulation, fm = 1kHz
80dBµ, 30% modulation, fm = 1kHz
23dBµ, 30% modulation, fm = 1kHz
80dBµ, 30% modulation, fm = 1kHz
80dBµ, 30% modulation, fm = 1kHz
107dBµ, 30% modulation, fm = 1kHz
0% modulation
With no input signal
23dBµ
min
13
40
90
17
46
11
100
140
Ratings
typ
27
80
160
23
52
0.4
0.5
20
140
285
max
39
160
230
1.1
1.3
29
200
400
Unit
mA
mVrms
mVrms
dB
dB
%
%
dBµ
mVrms
mVrms
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