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NTE722 PDF даташит

Спецификация NTE722 изготовлена ​​​​«NTE Electronics» и имеет функцию, называемую «Integrated Circuit FM Stereo Multiplex Decoder».

Детали детали

Номер произв NTE722
Описание Integrated Circuit FM Stereo Multiplex Decoder
Производители NTE Electronics
логотип NTE Electronics логотип 

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NTE722 Даташит, Описание, Даташиты
NTE722
Integrated Circuit
FM Stereo Multiplex Decoder
Description:
The NTE722 is a monolithic FM Stereo Multiplex Decoder System in a 14–Lead DIP type package.
This integrated circuit demodulated a stereo multiplex signal into the right and left audio channels
while inherently suppressing SCA frequency components. Internal provision is made for driving an
external stereo mode indicator lamp. The excellent performance and wide supply range requirement
make the NTE722 suitable for all line–operated and automotive FM stereo multiplex applications.
Features:
D 45dB Channel Separation
D 55dB Storcast Rejection without SCA Filters
D High Current Stereo Indicator Lamp Driver
D Operation with 8V to 14V Supplies
Absolute Maximum Ratings:
Supply Voltage (Note 1), V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Voltage at Stereo Lamp Driver Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V
Current into Stereo Lamp Driver Terminal (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Internal Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 670mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Lead Temperature (During Soldering, 10sec max), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Note 1. Power supply transients up to 22V are permissible for periods of 15 seconds. However, ex-
tended operation at voltages greater than 15V should be avoided as the maximum allowable
internal power dissipation for this device may be exceeded.
Note 2. Rating applies to steady state current. Maximum permissible surge current during turn–on
of the Stereo Indicator Lamp is 500mA.









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NTE722 Даташит, Описание, Даташиты
Electrical Characteristics: (TA = +25°C V+ = 12V, 200mVRMS standard stereo multiplex signal
applied to input, Note 3 unless otherwise specified)
Parameter
Test Conditions
Min Typ Max Unit
Supply Current
12 18 mA
Input Resistance
12 20
k
Stereo Separation
f = 100Hz
40
dB
f = 1kHz
30 45
dB
f = 10kHz
20 40
dB
Channel Balance (Monaural Input)
0.2
dB
Total Harmonic Distortion
0.5 1.0 %
Voltage Gain
1.0 V/V
67kHz Storecast Rejection
Note 4
55
dB
19kHz Pilot Level Required at Input
High Frequency Audio Components
in Left and Right Outputs
(dB Below 1kHz Output)
Stereo Indicator Lamp ON 12 22 mVRMS
Stereo Indicator Lamp OFF 4.0 8.0 mVRMS
19kHz
30
dB
38kHz
25
dB
Note 3. Standard Stereo Multiplex Signalhere refers to a 200mVRMS (0.56VPP) composite stereo
signal including 10% pilot with L = 1 and R = 1 as described in the FCC Rules of FM Broad-
casting.
Note 4. Measured with a stereo composite signal consisting of 80% stereo, 10% pilot and 10% SCA
as defined in the FCC Rules on FM Broadcasting.
14 8
Pin Connection Diagram
19kHz Filter 1
19kHz Filter 2
MPX Input 3
N.C. 4
N.C. 5
Stereo Lamp 6
GND 7
14 Decoupling
13 38kHz Filter
12 Right Output
11 Left Output
10 38kHz Filter Bias
9 V+
8 N.C.
1
.785 (19.95)
Max
.100 (2.45)
.600 (15.24)
7
.300 (7.62)
.200 (5.08)
Max
.099 (2.5) Min










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