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参数资料
| 型号： | LA1245 |
| 元件分类： | 接收器 |
| 英文描述： | AUDIO SINGLE CHIP RECEIVER, PDIP20 |
| 封装： | 0.300 INCH, DIP-20 |
| 文件页数： | 5/12页 |
| 文件大小： | 712K |
| 代理商： | LA1245 |
LA1245
No. 737-2/12
Specifications
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
VCC max
Pin 8, 14
16
V
Output voltage
VO
Pin 5, 7
24
V
Input voltage
VI
Pin 3
5.6
V
Supply current
ICC max
Pin 5
+7+8+14
32
mA
I18
Pin 18
5mA
Output high drive current
I20
Pin 20
2mA
Allowable power dissipation
Pd max
See Figure 2
700
mA
Operating temperature
Topr
20 to +70
°C
Storage temperature
Tstg
40 to +125
°C
Recommended Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
12
V
Electrical Characteristics at Ta = 25
°C, VCC = 12V, fr = 1MHz, fm = 400Hz, at specified test circuit
(based on application circuit).
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
ICC1
quiescent
16.0
25.0
35.0
mA
Current drain
ICC2
107dB
μ input
19.0
29.0
40.0
mA
VO1
23dB
μ input, mod. 30%
27.5
23.0
18.5
dBm
Detection output
VO2
80dB
μ input, mod. 30%
15.5
12.5
9.5
dBm
S/N1
23dB
μ input, mod. 30%
16
20
dB
Signal to noise ratio
S/N2
80dB
μ input, mod. 30%
52
57
dB
THD1
80dB
μ input, mod. 30%
0.4
1.0
%
Total harmonic distortion
THD2
107dB
μ input, mod. 30%
0.3
1.0
%
VSM1
quiescent
0
0.5
V
Signal meter output
VSM3
107dB
μ input
3.0
4.5
7.0
V
Input at signal meter output = 1V
VIN1
VSM output = 1V
19.0
25.0
31.0
dB
μ
Local oscillation-buffer output
VOSC
250
350
mVrms
Reference Characteristics
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Signal meter output
VSM2
40dB
μ input
2.5
V
Total harmonic distortion
THD3
112dB
μ input, mod.30%
2
%
Local oscillation fluctuation within a
band
ΔVOSC
VOSCL (522kHz) to VOSCH (1647kHz)
10
mVrms
VSM-BW1
80dB
μ input, 1/2 output frequency
±1.5
kHz
Signal meter band width*
VSM-BW2
80dB
μ input, 1/10 output frequency
4.5/+7
kHz
Selectivity
±10kHz at 30% mod.
45
dB
IF interference
fr = 600kHz
85
dB
Image frequency interference ratio
fr = 1400kHz
40
dB
* BFB450C4 N (Murata, Co.,) was used as a narrow band filter.
(Note) 0dBm = 775mV, 0dBu = 1
μV.
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