NTE1231 [NTE]
Integrated Circuit Complete 4 Watt TV Sound Channel; 集成电路完成4瓦电视音响频道
| 型号： | NTE1231 |
| 厂家： | 
NTE ELECTRONICS |
| 描述： | Integrated Circuit Complete 4 Watt TV Sound Channel |
| 文件： | 总3页 (文件大小：32K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NTE1231 & NTE1231A
Integrated Circuit
Complete 4 Watt TV Sound Channel
Description:
Capable of carrying out all of the functions of a TV sound channel, the NTE1231 and NTE1231A sili-
con monolithic integrated circuits consist of a six–stage IF amplifier/limiter, low–pass filter, differential
peak detector, DC volume control, regulated power supply, audio preamplifier, and output stage.
The audio power amplifier will deliver 4W of low–distortion audio to a 16Ω load with a supply of 24V.
When used with a 12V supply, such as is found in many portable TV sets, these devices will furnish
1.5W to an 8Ω loud speaker.
The NTE1231 is supplied in a quad in–line plastic package with a copper lead frame. This device is
designed to use the printed wiring board on which it is mounted for heat dissipation.
The NTE1231A is furnished in a 16–Lead DIP package with heat–sink contact tabs. The webbed lead
configuration (Pin4 & Pin5, Pin12 & Pin13) allows an inexpensive heat sink to be easily attached for
increased power dissipation capability and yet permits the use of a standard IC socket or printed wir-
ing board hole layout.
Features:
D High Sensitivity
D High AM Rejection
D DC Volume Control
D High Power Output
D Low Distortion
D Wide Operating Voltage Range: 9V to 28V
D Low Quiescent Current Drain
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V
Repetitive Peak Output Current, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A
Power Dissipation, PD
Tpins = +90°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3W
TA = +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Electrical Characteristics: (TA = +25°C, fo = 4.5MHz, fm = 400Hz, fd = ±7.5kHz, VCC = 12V,
RL = 8Ω, Vin = 1mV unless otherwise specified)
Parameter
Quiesecnt Output Voltage
Quiescent Supply Current
Input Limiting Threshold
AM Rejection
Symbol
VOUT
ICC
Test Conditions
Min Typ Max Unit
Vin = 0
5.1
–
6.0
19
40
55
65
120
1.0
1.4
1.5
46
30
5
6.9
33
V
RX = 22kΩ, Vin = 0
RX = 0
mA
VTH
–
100 µV
AMR
fd = ±25kHz, m = 0.3
40
50
–
–
–
–
–
–
–
–
–
–
dB
dB
mV
%
Signal–to–Noise Ratio
Recovered Audio
S + N/N POUT = 0.5W, fd = ±25kHz
Vout
THD
POUT
RX = 0
Output Distortion
POUT = 50mW
–
Output Power
THD = 2%, fd = ±25kHz
THD = 10%, fd = ±25kHz
f = 120Hz, RX = 22kΩ, RL = 4Ω
–
W
–
W
Power Supply Rejection
Input Resistance
PSR
Rin
–
dB
kΩ
pF
–
Input Capacitance
Cin
–
Electrical Characteristics: (TA = +25°C, fo = 4.5MHz, fm = 400Hz, fd = ±7.5kHz, VCC = 24V,
RL = 16Ω, Vin = 1mV unless otherwise specified)
Parameter
Quiesecnt Output Voltage
Quiescent Supply Current
Input Limiting Threshold
AM Rejection
Symbol
VOUT
ICC
Test Conditions
Min Typ Max Unit
Vin = 0
11
11
–
12
22
13
35
V
RX = 22kΩ, Vin = 0
RX = 0
mA
VTH
40
100 µV
AMR
fd = ±25kHz, m = 0.3
40
50
–
55
–
–
–
–
–
–
–
–
–
dB
dB
mV
%
Signal–to–Noise Ratio
Recovered Audio
S + N/N POUT = 1W, fd = ±25kHz
65
Vout
THD
POUT
RX = 0
120
0.75
3.5
4.2
46
Output Distortion
POUT = 50mW
–
Output Power
THD = 2%, fd = ±25kHz
THD = 10%, fd = ±25kHz
f = 120Hz, RX = 22kΩ, RL = 4Ω
–
W
–
W
Power Supply Rejection
Input Resistance
PSR
Rin
–
dB
kΩ
pF
–
30
Input Capacitance
Cin
–
5
Pin Connection Diagram
IF Input
IF Decoupling
IF Decoupling
1
2
3
12 DE–Emphasis
11 Ripple Rejection
IF Input
IF Decoupling
IF Decoupling
GND
1
2
3
4
5
16 DE–Emphasis
15 Ripple Rejection
10
14
VCC
VCC
13 GND
NTE1231
NTE1231A
GND
12
GND
FM Detector
FM Detector
4
5
9
8
AF Output
FM Detector
FM Detector
6
7
11 AF Output
Compensation
10 Compensation
DC Volume Control
6
7
AF Feedback
DC Volume Control
8
9
AF Feedback
NTE1231
.247 (6.27)
12
7
.677
(17.2)
1
6
.770 (19.5) Max
.260 (6.6)
.233
(5.9)
Max
.100 (2.54)
.099 (2.5) Min
.700 (17.78)
NTE1231A
16
1
9
.260 (6.6) Max
8
.785 (19.9)
.300
(7.62)
Max
.200 (5.08)
Max
.245 (6.22)
Min
.100 (2.54)
.700 (17.7)
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