NTE NTE1441

NTE1441
Integrated Circuit
FM IF Amplifier, Detector
Function:
D IF Amplification, Limiter
D Quadrature Detector
D AF Preamplifier
D Muting at Weak Input
D Muting at the Detuning
D
D
D
D
D
Signal Meter Drive Output
AFC Tuning Meter Drive Output
Delay AGC Output
Inverting Circuit for Muting Drive Voltage
IF Amplifier Stop Circuit
Features:
D High Limiting Sensitivity: 18µV Typ.
D Low Distortion: 0.05% Typ Determined by the Linearity of Phase Characteristics in Phase
Shifting Circuit
D High Demodulation Output: 330mVrms Typ
D High S/N Ratio: 78.5dB Typ
D Muting at Detuning with Little Shock Noise
D Single Meter Drive Output Proportional with the Input Signal Level dB
D Detuning Muting Band having Good Symmetrics
D Tuning Meter Driving Output having Wide Swing Width
D Delay AGC Drive Output for Front End
D Constant Voltage Circuit is Built–In: Operating Voltage Range = 9V to 14V
D Muting Characteristics Between Adjacent Stations are Distinguished
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage (Pin11), VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Maximum Input Voltage (Pin1–2), VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1VP–P
Maximum Supply Current (Pin11), ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
Maximum Flow–In Current
Pin15, I15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA
Pin16, I16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA
Maximum Flow–Out Current
Pin10, I10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Pin12, I12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Pin13, I13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Pin15, I15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Allowable Power Dissipation, PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Recommended Operating Condition: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 10.7MHz unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
–
22
30
mA
–
26.5
33.0
mA
Quiescent Current
ICCO
Current Dissipation
ICC
VIN = 100dBµ
Demodulated Output
VO
VIN = 100dBµ, 400Hz – 100% MOD
240
330
460
mVrms
Signal–to–Noise Ratio
S/N
VIN = 100dBµ, 400Hz – 100% MOD
72.0
78.5
–
dB
Input Limiting Voltage
VIN(lim)
VO 3dB down, 400Hz – 100% MOD
–
25
31
dBµ
THD
VIN = 100dBµ, 400Hz – 100% MOD
–
0.05
0.3
%
Total Harmonic Distortion
Muting Sensitivity
VIN(mute) V12 = 1.4V
23
29
35
dBµ
Muting Attenuation
Mute(att) V5 = 2V, VIN = 100dBµ, 400Hz – 100% MOD
60
65
–
dB
Muting Bandwidth
BW(mute) VIN = 100dBµ, V12 = 1.4V
140
220
370
kHz
VIN = 100dBµ, FM: 400Hz – 100% MOD,
AM: 1kHz – 30% MOD
45
60
–
dB
Quiescent
4.0
4.9
6.0
V
VIN = 100dBµ
0
0
0.3
V
Quiescent
0
0
0.1
V
VIN = 70dBµ
1.9
3.0
4.2
V
VIN = 100dBµ
4.5
5.5
–
V
Quiescent
4.2
5.0
5.5
V
VIN = 100dBµ
0
0
0.5
V
Quiescent, V8–10 ≤ 20mV
10
35
60
µA
V16(mute) VIN = 100dBµ, V12 = 1.4V
0.7
0.84
1.0
V
AM Rejection Ratio
Muting Driving Output
Signal Meter Driving Output
AGC Output
IF OFF Current
Voltage of Muting Operation
Offset Voltage
Pin Voltage
AMR
V12
V13
V15
I15(off)
V6–10B
Quiescent, Pin6 – Pin10
–0.5
0
+0.5
V
V7–10B
Quiescent, Pin7 – Pin10, R7–10 = 5.1k
–0.25
0
+0.25
V
–
2.6
–
V
V2
–
2.6
–
V
V3
–
2.6
–
V
V6
–
5.6
–
V
V7
–
5.6
–
V
V8
–
5.4
–
V
V10
–
5.6
–
V
V12
–
4.9
–
V
V13
–
0
–
V
V15
–
5.0
–
V
V1
Quiescent
Pin Connection Diagram
Front End 1
16 Mute Level Adjust
Front End 2
15 AGC
Front End 3
14 GND
GND 4
13 Signal Meter
Mute Switch 5
12 Mute Switch
AF Output 6
11 VCC
AFC/Vref 7
10 Detector Trans
Detector Trans 8
16
9
Detector Trans
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)