NTE NTE1461 Integrated circuit phase lock loop (pll) fm stereo demod Datasheet

NTE1461
Integrated Circuit
Phase Lock Loop (PLL) FM Stereo Demod
Description:
The NTE1461 is a multiplex integrated circuit in a 16−Lead SIP type package designed for use in FM
car stereo applications. Due to its low distortion factor, this device can be used as a multiplex stereo
demodulator appropriate for car component stereo units.
Functions:
D Stereo Noise Control (SNC Pin):
Through controlling the quality of sound from stereo mode to monaural mode with the voltage applied to the control pin, the FM stereo noise in the weak electic field is reduced by this function.
D High−Cut Control Function (HCC Pin):
The FM noise in weak electric field is reduced through the attenuation of high frequency thereof.
Such attenuation can be changed smoothly from “Normal” to “High−Cut” by controlling the voltage
applied to the control pin. The volume of “High−Cut” can be selected by using a capacitor
installed at the outside of he unit.
D Stereo/Monaural Automatic Conversion:
This conversion operates in priority to the stereo noise control. Preference on the pilot input.
D Stoppage of VCO Oscillation:
When a voltage higher than 6V is applied on the HCC pin, the oscillation of VCO can be discontinued. An erroneous operation of stereo lamp does not happen even at this stage.
D With spearation control terminal
Features:
D Low Distortion Factor: 0.05% Typ, 300mV Input Mono
D The Ripple of Power Source can Effectively be Rejected
D Wide Supply Voltage Range: VCC = 6.5V to 14V
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Lamp Driving Current, IL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
Allowable Power Dissipation (TA ≤ +45°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Recommended Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 to 14V
Input Signal Voltage, Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 to 300mV
Electrical Characteristics: (TA = +25°C, VCC = 10V, Vi = 300mV, f = 1kHz, L + R = 90%, Pilot = 10%
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Quiescent Current
ICCO
−
21
27
mA
Channel Separation
Sep
40
50
−
dB
−
0.05
0.2
%
Main
−
0.05
0.2
%
L = R = 90%, Pilot = 10%
60
85
120
mV
−
3
6
dB
−
±3
−
%
140
200
280
mV
Monaural Distortion
Stereo Distortion
THDMono Mono = 300mV
THDST
Lamp Turn−On Level
VL
Hysteresis
hy
Capture Range
CR
Pilot = 30mV
Output Signal Level
Vo
Sub
Signal−to−Noise Ratio
S/N
70
78
−
dB
ri
−
20
−
kΩ
SCArej
−
80
−
dB
THD = 1%
700
800
−
mV
−8.5 −3.0 −0.3
Input Resistance
SCA Rejection
Allowable Input Voltage
Vi
SNC Output Attenuation
SNCAtt
V8 = 0.6V, L − R = 90%, Pilot = 10%
SNC Output Voltage
Vosub
V8 = 0.1V, L − R = 90%, Pilot = 10%
−
−
5
mV
HCC Output Attenuation
HCCAtt
V7 = 0.6V, L + R = 90%, Pilot = 10%
−15
−6
−0.5
dB
V7 = 1V, L + R = 90%, Pilot = 10%
−2
−
0
dB
dB
Power Ripple Rejection
RR
−
35
−
dB
VCO Stopping Voltage
VCOStop
−
6.8
−
V
CHBa
−
0.5
1.5
dB
Channel Balance
Pin Connection Diagram
(Front View)
16 OSC Constants
15 Ripple Filter
14 Ripple Filter
13 19kHz
12 Pilot Detector
11 Pilot Detector
10 Stereo Lamp
9
GND
8
Stereo Noise Control
7
High Cut Control
6
Rt Ch Output
5
Lt Ch Output
4
3
High Cut Constant
Separation Adjust
2 Composite Signal Input
1 VCC
.953 (24.1)
.257
(6.5)
.127 (3.2)
.334
(8.48)
.125 (3.17)
.059 (1.5)
.118 (3.0)
Similar pages