NTE1578
Integrated Circuit
FM Mixer/IF Amp
Description:
The NTE1578 is an FM front–end integrated circuit in a 16–Lead DIP type package designed for use
in car radio and home stereo applications. This device has a built–in AGC driver circuit which im-
proves interference characteristics. It thereby offers advantages such as improved interference char-
acteristics without sacrificing usable sensitivity and the conventional DX–LOCAL change–over
switch.
Features:
D
Double–Balanced Type MIX (Improved Spurious Characteristic)
D
Keyed AGC/Keyed Classical AGC (Improved Intermodulation, Cross Modulation Characteristic)
D
Differential IF Amplification (Improved Limiting Characteristic)
Absolute Maximum Ratings: (T
A
= +25
°
C unless otherwise specified)
Maximum Supply Voltage (Pin12, Pin15), V
CC1
max
8.5V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Supply Voltage (Pin5, Pin6), V
CC2
max
16V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allowable Power Dissipation (T
A
≤
+50
°
C, Note 1), P
D
max
600mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opg
–20
°
to +70
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
–40
°
to +125
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. P
D
max = 460mW at T
A
= +70
°
C
Recommended Operation Condition: (T
A
= +25
°
C unless otherwise specified)
Recommended Supply Voltage (Pin12, Pin15), V
CC1
8V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Supply Voltage (Pin5, Pin6), V
CC2
13V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
°
C, V
CC1
= 8V, V
CC2
= 13V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Dissipation Current
I
CC1
Pin 12, 15
17
25
36
mA
I
CC2
Pin 5, 6
5
8
11
mA
Local OSC Input Offset
∆
V
INOSC
–20
0
20
mV
MIX Input Offset
∆
V
INMIX
–20
0
20
mV
MIX Output Offset
∆
I
OUT MIX
–600
0
600
µ
A
High Level AGC Output
V
AGC H
V
i
= 0dBu, V
CL
= 4V
7.6
7.9
–
V
Low Level AGC Output
V
AGC L
V
i
= 100dB, V
CL
= 4V
–
0.5
1
V
