參數(shù)資料
型號： LA1837
廠商： Sanyo Electric Co.,Ltd.
英文描述： Single-Chip Home Stereo IC with Electronic Tuning Support(帶電子調(diào)諧的家庭立體聲芯片)
中文描述： 單芯片家用音響集成電路與電子調(diào)諧支持（帶電子調(diào)諧的家庭立體聲芯片）
文件頁數(shù)： 2/9頁
文件大?。?/td> 255K
代理商： LA1837
No. 5688-2/9
LA1837
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[FM Mono Characteristics] fc = 10.7 MHz, fm = 1 kHz, with the coil adjusted so that V
AFC
– V
REG
= 0 V
Current drain
I
CCO
-FM
Demodulation output
V
O
FM
Channel balance
C.B-mono
With no input
18
31
44
mA
100 dBμ, 100% mod. The pin 16 output
730
1100
1460
mVrms
100 dBμ, 100% mod. The pin 16 output/pin 17 output
–1.5
0
+1.5
dB
Total harmonic distortion (mono)
THD
FM(1)
THD
FM(2)
S/N
FM
AMR
100 dBμ, 100% mod. The pin 16 output
0.3
1.3
%
Total harmonic distortion (mono)
100 dBμ, 200% mod. The pin 16 output
1.0
5
%
Signal-to-noise ratio
100 dBμ, 100% mod. The pin 16 output
72
80
dB
AM rejection ratio
100 dBμ, AM 30 % mod. The pin 16 output
45
65
dB
Limiting input voltage
–3 dBL.S.
100 dBμ, 100% mod. Referenced to the output.
The input such that the output is down –3 dB.
26
32
38
dBμ
LED sensitivity
SD
On-FM
SD
BW
V
IFBuff-FM
V
SM-FM(1)
V
SM-FM(2)
Mute-Att
51
60
69
dBμ
LED bandwidth
100 dBμ
85
120
170
kHz
IF count buffer output
100 dBμ. The pin 13 output
80
120
160
mVrms
S-meter output
0 dBμ. The pin 11 output
0
0.1
0.5
V
100 dBμ. The pin 11 output
3.6
4.3
5.0
V
Muting attenuation
100 dBμ, 100% mod. The pin 16 output
75
85
dB
[FM Stereo Characteristics] fc = 10.7 MHz, 100 dBμ, fm = 1 kHz, L + R = 90%, Pilot = 10%
Separation (left)
Sep
L
Sep
R
ST
ON
ST
OFF
THD-main
L mod. The pin 16 output/pin 17 output
30
45
dB
Separation (right)
R mod. The pin 17 output/pin 16 output
30
45
dB
Stereo on level
The pilot modulation such that V7 is under 0.7 V.
1.3
2.7
5
%
Stereo off level
The pilot modulation such that V7 is over 4.5 V.
1.5
%
Total harmonic distortion (main)
L+R mod. The pin 16 output
0.3
1.3
%
Brej-3rd
fs = 113 kHz, Vs = 90 %, Pilot = 10 %, The pin
16 output vs. the L-R mod. 1 kHz demodulated output
40
dB
Adjacent channel interference
rejection ratio
Brej-5th
fs = 189 kHz, Vs = 90 %, Pilot = 10 %, The pin
16 output vs. the L-R mod. 1 kHz demodulated output
40
dB
[AM Characteristics] fc = 1000 kHz, fm = 1 kHz
Current drain
I
CCO-AM
V
OAM(1)
V
OAM(2)
S/N
AM(1)
S/N
AM(2)
THD
AM(1)
THD
AM(2)
SD
On-AM
V
OSC-AM
V
IFBuff-AM
V
STIF-AM
V
SM-AM
With no input
15
25
35
mA
Detector output
23 dBμ, 30% mod. The pin 16 output
100
180
360
mVrms
80 dBμ, 30% mod. The pin 16 output
200
320
500
mVrms
Signal-to-noise ratio
23 dBμ, 30% mod. The pin 16 output
18
22
dB
80 dBμ, 30% mod. The pin 16 output
49
55
dB
Total harmonic distortion (mono)
80 dBμ, 30% mod. The pin 16 output
0.4
1.2
%
80 dBμ, 80% mod. The pin 16 output
1.0
4.0
%
LED sensitivity
17
27
37
dBμ
Local oscillator buffer output
With no input. The pin 30 output
110
160
220
mVrms
IF counter buffer output
80 dBμ, no modulation. The pin 13 output
160
220
300
mVrms
ST-IF output
80 dBμ, no modulation. The pin 7 output
16
34
48
mVrms
S-meter output
0 dBμ, no modulation.
0
0
0.2
V
Electrical Characteristics
at Ta = 25°C, V
CC
= 9 V, in the specified Test Circuit
A
Ambient temperature, Ta – °C
Pd max – Ta
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