NTE1237 [NTE]
Integrated Circuit AM Radio without Audio Stage; 集成电路AM收音机无音频平台
| 型号： | NTE1237 |
| 厂家： | 
NTE ELECTRONICS |
| 描述： | Integrated Circuit AM Radio without Audio Stage |
| 文件： | 总2页 (文件大小：24K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NTE1237
Integrated Circuit
AM Radio without Audio Stage
Features:
D Small External Part Count
D Tuning Meter Circuit
D Wide AGC Range
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Power Dissipation, PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (VCC = 12V, f = 1MHz unless otherwise specified)
Parameter
Symbol
MS
Test Conditions
Min Typ Max Unit
Maximum Sensitivity
Signal–to–Noise Ratio
fM = 400Hz, MOD = 30%, Output=50mV
37.5 40.0 42.5 dB
S/N
fM = 400Hz,
MOD = 30%
Input = 40dB/m
8
42
–
12
45
–
–
dB
dB
%
Input = 74dB/m
Total Harmonic Distortion
THD fM = 400Hz
MOD = 30%, Input = 74dB/m
MOD = 80%, Input = 74dB/m
MOD = 30%, Input =120dB/m
1.0 2.0
1.5 3.0
2.5 10
–
%
–
%
Detector Voltage
VO(DET) fM = 400Hz, MOD = 30%, Input = 74dB/m
140 170 230 mW
Tuning Meter Circuit
Quiescent Current
TM
IQ
Input = 74dB/m
50
–
–
100
%
13
21 mA
Pin Connection Diagram
Input 1
14 Tuning Meter
2
3
13 AGC Amp Input
12 Detector Input
11 Audio Output
10 VCC IF/Audio
VCC RF/OSC
CC RF
V
Converter Output 4
OSC Tank 5
6
7
9 GND
Converter Input
IF Input
8 IF Output
14
8
7
1
.827 (21.0) Max
.300 (7.62)
.197
(5.0)
Max
.100 (2.45)
.099 (2.5) Min
.600 (15.24)
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