NTE853 [NTE]
Integrated Circuit Low Power, Narrow Band, FM IF System; 集成电路低功耗，窄带， FM IF系统
| 型号： | NTE853 |
| 厂家： | 
NTE ELECTRONICS |
| 描述： | Integrated Circuit Low Power, Narrow Band, FM IF System |
| 文件： | 总2页 (文件大小：26K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NTE853
Integrated Circuit
Low Power, Narrow Band, FM IF System
Description:
The NTE853 is a low power narrow band FM IF system which includes: Oscillator, Mixer, Limiting
Amplifier, Quadrature Discriminator, Active Filter, Squelch, Scan Control and Mute Switch. The
NTE853 is designed for use in FM dual conversion communications equipment.
Features:
D Low Drain Current (3mA Typ @ VCC = 6V)
D Excellent Sensitivity: Input Limiting Voltage (–3.0dB) = 5.0µV (Typ)
D Low Number of External Parts Required
Absolute Maximum Ratings: (TA = +25°C, unless otherwise specified)
Power Supply Voltage (Pin4), VCC(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Operating Supply Voltage Range (Pin4), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4V to 8V
Detector Input Voltage (Pin8), . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Vp–p
Input Voltage (VCC ≥ 6V, Pin16), V16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1VRMS
Mute Function (Pin14), V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5V to 5Vpk
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Electrical Characteristics: (VCC = 6V, fO = 10.7MHz, ∆f = ± 3kHz, fmod = 1kHz, TA = +25°C
unless otherwise specified)
Parameter
Pin
4
Test Conditions
Min Typ Max Unit
Drain Current, Squelch OFF
Drain Current, Squelch ON
Input Limiting Voltage
–
–
–
–
–
2
3
–
5
mA
mA
µV
4
16
9
–3dB Limiting
5
10
–
Detector Output Voltage
Detector Output Impedance
Recovered Audio Output Voltage
3
V
–
400
–
Ω
9
Vin = 10mV
200 350
–
mVrms
Electrical Characteristics (Cont’d): (VCC = 6V, fO = 10.7MHz, ∆f = ± 3kHz, fmod = 1kHz, TA = +25°C
unless otherwise specified)
Parameter
Pin
–
Test Conditions
Vin = 10mV, 10kHz
Min Typ Max Unit
Filter Gain
40
1.8
–
46
2.0
100
15
10
0
–
2.5
–
dB
V
Filter Output Voltage
Trigger Hysteresis
11
–
mV
Ω
Mute Function, LOW
Mute Function, HIGH
Scan Function, LOW
Scan Function, HIGH
Mixer Conversion Gain
Mixer Input Resistance
Mixer Input Capacitance
14
14
13
13
3
–
50
–
1
MΩ
V
Mute OFF, V12 = 2V
Mute ON, V12 = GND
–
0.5
–
5.0
–
–
V
20
3.3
2.2
–
dB
kΩ
pF
16
16
–
–
–
–
Pin Connection Diagram
Crystal OSC 1
Crystal OSC 2
Mixer Output 3
16 RF Input
15 GND
14 Audio Mute
13 Scan Control
VCC
4
Limiter Input 5
Decoupling 6
Limiter Output 7
Quad Input 8
12 Squelch Input
11 Filter Output
10 Filter Input
9 Demodulator Output
16
1
9
8
.260 (6.6) Max
.785 (19.9)
Max
.300
(7.62)
.200 (5.08)
Max
.245
(6.22)
Min
.100 (2.54)
.700 (17.7)
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