NTE NTE1579

NTE1579
Integrated Circuit
Fm−IM Amplifier/Demodulator
Features:
D Wide Range of the Operating Supply Voltage
D Low Distortion: THD = 0.06% Typ.
D High Signal−to−Noise Ratio: S/N = 75dB Typ.
D High Input SensitivityL Vin (lim) = 31dBµ Typ.
D Capable of Driving the Signal Meter Under Low Input Signal
D High Stability Against Abnormal Oscillation
Functions:
D FM IF Amplifier
D Quandrature Detector
D Audio Post−Amplifier
D Muting Circuit
D AFC, Center Meter Driver
D Muting Control Driver
D Analog Control Driver
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Power Dissipation (TA = +60°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 624W
Operating Temperature Range, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C
DC Electrical Characteristics: (TA = +25°C, VCC = 8V, Vin = 0dBµ)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
DC Voltage at Pin 1
V1
−
1.95
−
V
DC Voltage at Pin 2
V2
−
1.95
−
V
DC Voltage at Pin 3
V3
−
1.95
−
V
DC Voltage at Pin 6
V6
−
5.60
−
V
DC Voltage at Pin 7
V7
−
5.60
−
V
DC Voltage at Pin 10
V10
−
5.60
−
V
AC Electrical Characteristics: (TA = +25°C, VCC = 8V, fc = 10.7MHz, fm = 1kHz, ∆f = 75kHz dev.)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Vin = 100dBµ, Mute ON
−
32
39
mA
−
31
37
dBµ
230
300
390
mVrms
Operating Current
ICC
Limiting Sensitivity
Vin(lim)
at −3dB
Recovered Output
VO(AF)
Vin = 100dBµ
Total Harmonic Distortion
THD
−
0.06
0.3
%
Signal−to−Noise Ratio
S/N
67
75
−
dB
AM Rejection
AMR
Vin = 100dBµ, fm(AM) = 1kHz, 30% MOD
45
55
−
dB
Muting Attenuation
Mute(ATT)
Vin = 100dBµ, V5 = 2V
68
75
−
dB
Muting Band Width
BW(Mute)
Detuned Frequency under 1.4V of
Pin = 12V, Vin = 100dBµ
−
100
−
kHz
Muting Sensitivity
Vin(Mute)
Vin under 1.4V of Pin 12 Voltage
−
35
−
dBµ
V13−0
Pin 13 voltage under Vin = 0dBµ
−
0.2
−
V
V13−60
Pin 13 voltage under Vin = 60dBµ
−
1.65
−
V
V13−100
Pin 13 voltage under Vin = 100dBµ
−
4.7
−
V
V15
Pin 13 voltage under Vin = 86dBµ
−
3.7
−
V
Analogue Control Voltage
AGC Control Voltage
Pin Connection Diagram
IF Input
1
16
Substrate GND
AM FM Switch Circuit
2
15
Delayed AGC
AM FM Switch Circuit
3
14
Substrate GND
Substrate GND
4
13
Tuning Meter Circuit
Muting Switch Circuit
5
12
To MPX IC
Audio Output
6
11
VCC
AFC Output
7
10
DC Reference Bias
IF Output
8
9
Quadrature Input
16
9
.260 (6.6) Max
1
8
.785 (19.9)
Max
.300
(7.62)
.200 (5.08)
Max
.245
(6.22)
Min
.100 (2.54)
.700 (17.7)