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参数资料
| 型号： | LA3450 |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO DEMODULATOR, PDIP28 |
| 封装： | DIP-28 |
| 文件页数： | 9/16页 |
| 文件大小： | 522K |
| 代理商： | LA3450 |
LA3450
Νο.2393-2/16
Specifications
Absolute Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum Supply Voltage
VCC max
16
V
Lamp Drive Current
IL max
30
mA
Allowable Power Dissipation
Pd max
680
mW
Operating Temperature
Topg
20 to +70
°C
Storage Temperature
Tstg
40 to +125
°C
Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended Supply Voltage
VCC
13
V
Operating Voltage
VCC op
10 to 15
V
Recommended Input Signal Voltage
Vi
400
mV
Electrical Characteristics at Ta = 25
°C, VCC = 13V, Input : 400mV, f = 1kHz, L+R = 90%, Pilot = 10%
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Quiescent Current
ICCO
No input
29
39
mA
Input Resistance
ri
FM, AM input common
14
20
26
k
Ω
f = 100Hz
50
dB
f = 1kHz
45
60
dB
Channel Separation
Sep
f = 10kHz
50
dB
FM MONO
0.005
0.05
%
FM MAIN
0.015
0.08
%
Total Harmonic Distortion
THD
AM 200mV input
0.02
0.08
%
FM MONO, THD = 1%
800
1200
mV
Allowable Input Level
Vin max
AM
400
600
mV
FM MONO
770
1100
1500
mV
Output Voltage
Vo
AM 200mV input
770
1100
1500
mV
Signal-to-Noise Ratio
S/N
MONO IHF-A BPF
90
101
dB
Birdie Noise Rejection
BR
Spurious signal, VS = 100mV, fS = 115kHz
40
dB
19kHz Carrier Leak
CL19
Canceler, de-emphasis
53
dB
38kHz Carrier Leak
CL38
De-emphasis
50
dB
AM
→ FM, AM input 200mV
70
80
dB
Crosstalk
CT
FM
→ AM, FM input 400mV
70
80
dB
Channel Balance
CB
FM MONO
0
1
dB
Cal-tone OSC Frequency
400
Hz
AM
→ FM, voltage applied to pin26
0.5
V
AM/FM Select Voltage
VAM-FM
FM
→ AM, voltage applied to pin26
2.5
V
VCO Stop Voltage
Voltage applied to pin10
2.5
V
Lamp Lighting Level
VL
PILOT LEVEL
4
7.5
13
mV
Lamp Hysteresis
hy
3.5
dB
Capture Range (Note 1)
PILOT 30mV
±1.2
%
Note 1 : The capture range is represented by the value in 19kHz equivalent.
2 : The low
pass filter used to measure electrical characteristics must have 19kHz attenuation of 90dB or more negative value of dB and 38kHz
attenuation of
70dB or more negative value of dB.
3 : Be careful that the combination of pin 22
⊕ and the others causes dielectric breakdown easily.
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