NTE1142 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit FM Multiplex Stereo Decoder

NTE1142
Integrated Circuit
FM Multiplex Stereo Decoder
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Supply Current, I_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18mA
Lamp Driver Current, I_L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Power Dissipation, P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW
Operating Temperature Range (V_CC = 12V), T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10 to +75°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to +125°C
Electrical Characteristics: (T_A = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Standby Current
Input Impedance
Stereo Channel Seperation
I_CC
V_CC = 12V
Z_i
f = 1.0kHz
Sep f = 100kHz (Note 1)
f = 1.0kHz
− 10 18 mA
− 20 − kΩ
− 35 − dB
30 45 − dB
f = 10kHz with 15kHz LPF
− 30 − dB
Voltage Gain
Channel Balance
Total Harmonic Distortion
A_V
38kHz BEF
− −1.5 − dB
Ch. B Monoaural Input, f = 1.0kHz − 0.2 2.0 dB
THD
− 0.5 1.0 %
Audio Muting Voltage
(Required at Pin 5)
Mute On
Mute Off
0.6 0.85 −
V
− 1.08 1.5 V
Lamp Indictaor Input Level
Stereo−Monaural Switching
Voltage (Required at Pin 4)
Lamp ON
Lamp Off
Stereo
Mono
− 12 22
− 8.4 −
− 1.13 1.5
0.6 0.82 −
m^Vrms
m^Vrms
V
V
Ultrasonic Frequency Rejection
19kHz (Note 2)
− 30 − dB
38kHz (Note 2)
− 25 − dB
Inherent SCA Rejection
Attenuation in Muting Mode
SCA_rej
without filter
(Note 3)
− 55 − dB
45 55 − dB
Note 1. Measurement made with 200mVrms Standard Multiplex Composite Signal Containing Left
(45%) and Right (45%) audio information with a 10% (19kHz) pilot signal. Modulation fre-
quency is 1.0kHz unless otherwise specified.
Note 2. Referenced to 1.0kHz output signal with Standard Multiplex Composite Input Signal.
Note 3. Referenced to 1.0kHz output signal with either Standard Multiplex Composite or Monoaural
Input Signal.