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參數(shù)資料
| 型號： | LA1225M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | FM IF Detector IC |
| 中文描述： | 調(diào)頻中頻檢測器IC |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 55K |
| 代理商： | LA1225M |
No. 6017-2/8
LA1225M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Current drain
I
CCO
V
O
THD
No input
3.0
4.0
5.0
mA
Demodulator output
100 dBμ, 100% mod., fm = 1 kHz
70
150
220
mV
Total harmonic distortion
100 dBμ, 100% mod., fm = 1 kHz
0.5
0.8
%
Signal-to-noise ratio
S/N
100 dBμ, 100% mod., fm = 1 kHz
65
73
dB
3 dB sensitivity
–3 dBL.S
100 dBμ, 100% mod.,
fm = 1 kHz output reference, when the input is –3 dB
19
28
37
dBμ
SD sensitivity
SD
ON
V
IFBuff
0% mod.
35
50
65
dBμ
IF counter buffer output
100 dBμ
90
130
170
mV
Operating Characteristics
at Ta = 25°C, V
CC
= 3.0 V, fc = 10.7 MHz
Pin Functions and No-Signal Voltage
at V
CC
= 3.0 V
Pin No.
Function
Notes
No-signal voltage (V)
Equivalent circuit
Input impedance
R
IN
= 330
1.2
1
IF input
1
2
RIN
A11506
Vreg = 1.2 V
1.2
2
Reg
2
A11507
0
3
GND
Open collector output
The SD sensitivity can be adjusted
with an external resistor
connected to this pin.
0.1
4
S-meter output
4
A11508
3.0
5
V
CC
Output impedance
R
OUT
= 3 k
1.5
6
Demodulated output
6
ROUT
A11509
Continued on next page.
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