NTE NTE1559

NTE1559
Integrated Circuit
FM IF Amp, Demod
Functions:
D FM IF Amplifier
D Quadrature Detector
D Audio Amplifier
D Muting Circuit
D Signal–Meter Driver
D
D
D
D
D
Features:
D High Signal–to–Noise Ratio
D High Sensitivity
D Large Muting Attenuation
D Stable Operation using Full–Balanced
Differential
D Triplex Amplifier
D High Linearity of Signal Meter
D Operational Input Level of Muting is Adjustable
by Controlling External Resistance
AFC
Center–Meter Driver
Muting Controller (Bandwidth & Level)
Center–Meter Short Circuit for AM Band (Pin15)
IF Amp Killer for AM Band (Pin15)
Absolute Maximum Ratings:
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation, PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 590mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (TA = +25°C, VCC = 13V, fc = 10.7MHz, fm = 400Hz, f = 75kHz dev.
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Operating Current
ICCmax
Vin = 100dBµ, 2V supplied to Pin5,
+150kHz detuned
–
Limiting Sensitivity
Vin(lim)
Input level lower by 3dB than (Vo(AF) under
100dBµ of input voltage)
–
33
37
dBµ
Recovered AF Voltage
Vo(AF)
Vin = 100dBµ
280
380
510
mV
Total Harmonic Distortion
THD
Vin = 100dBµ
–
Signal–to–Noise Ratio
S/N
Vin = 100dBµ
83
88
–
dB
AM Rejection
AMR
Vin = 100dBµ, fm = 1kHz, MOD = 30%
45
60
–
dB
83
100
–
dB
Muting Attenuation
Mute(ATT) (Output Voltage under 100dBµ if Vin and with
Pin5 Open) = 0dB, 2V fed to Pin5 via 12kΩ
30.5 39.3
0.01 0.08
mA
%
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 13V, fc = 10.7MHz, fm = 400Hz,
f = 75kHz dev. unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Muting Bandwidth
BW(Mute) The sum of plus and minus side ∆fc’s for
V12 = 1.4V under 100dBµ if Vin
60
100
160
kHz
Muting Sensitivity
Vin(Mute)
36
43
60
dBµ
Muting Sensitivity Control Range
∆Vin(Mute) Max Input Level for Muting Level Control
75
–
–
dBµ
Without muting level control, Pin16 Open,
V12 = 1.4V
Meter Driven Voltage (1)
V13–0
Vin = 0dBµ
–
0
–
V
Meter Driven Voltage (2)
V13–70
Vin = 70dBµ
0.9
1.6
–
V
Meter Driven Voltage (3)
V13–110
Vin = 110dBµ
4.5
5.5
–
V
Recovered AF Voltage Attenuation
(for AM Band)
VO(AM)
Vin = 100dBµ, Pin15 Open, 13V supplied to
Pin15 via 4.7kΩ
60
81
–
dB
Center–Meter Voltage
(For AM Band)
VCM(AM)
Vin = 100dBµ, +150kHz detuned, the voltage –30
difference of Pin7 and Pin10 with 13V supplied to Pin15
+7
+30
mV
Pin Connection Diagram
1st IF Input 1
16 Level Control
2nd IF Input 2
3rd IF Input 3
15 Center Meter
14 GND
GND 4
13 Signal Motor Drive
Mute Control 5
12 Mute Switch
11 VCC
Audio Amp Output 6
AFC Amp Output 7
10 Quadrature Tank
Quadrature Tank 8
9 Quadrature Tank
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)