1108

NTE1108
Integrated Circuit
AM−FM IF Amplifier
Features:
D Small Power Consumption ICC = 6.5mA (VCC = 5V)
D AM: Wide AGC Range (AGC = 65dB Typ.)
D FM: Excellent Limiter Characteristic
D High Integration and Many Functions
Absolute Maximum Ratings:
Supply Voltage, V4−9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5V
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −15 to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to +125°C
Minimum Operating Supply Voltage, Vccm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0V
Electrical Characteristics: (TA = +25°C, VCC = 5V, unless otherwise specified)
Parameter
Total Current Consumption
1st Block Voltage Gain
2nd Block Detection Gain
Symbol
Min
Typ
Max
Unit
−
6.5
8.8
mA
VG1(AM) f = 455kHz, RL = 1kΩ
41
46
−
dB
VG1(FM) f = 10.7, RL = 1kΩ
28
33
−
dB
VG2(DET) f = 455kHz, (f =1kHz 30% mod
Rg = 470Ω) (Note 1)
4
9
−
dB
VG2(FM) f = 10.7MHz, RL = 1kΩ, Rg = 50Ω
38
44
−
dB
24
29
−
dB
55
65
−
dB
ICC
3rd Block Voltage Gain
VG3
AGC Range
AGC
Note 1. VO(AF) = −20dBS
Test Conditions
f = 1kHz
Pin Connection Diagram
(Front View)
IF Amp/VCC
1
14
IF Input
AF Input
2
13
N.C.
AF Output
3
12
AGC Input
VCC
4
11
IF Amp Output
VREG/1.4V
5
10
Bypass
Limiter Output
6
9
GND
Detector Output
7
8
Det/Limiter Input
14
8
1
7
.785 (19.95)
Max
.300
(7.62)
.200 (5.08)
Max
.100 (2.45)
.600 (15.24)
.099 (2.5) Min