NTE1604
Integrated Circuit
FM IF System for Car Radio
Description:
The NTE1604 is an integrated circuit in a 16鈥揕ead SIP type package designed for use in FM car stereo
receivers. This device features versatile muting characteristics and allows receiver designers to realize
the muting performance according to their design concept.
Functions:
D
IF Amplification/Limiter
D
AFC Output
D
Muting Bandwidth
D
Quadrature Detector
D
D
D
D
Signal Meter Output
Muting Under Weak Signal Strength
AF Preamplifier
AGC Output
Features:
D
Versatile Mutings
a. When Muting Operation is Performed under a Weak Signal Strength, an Attenuation Slope
of the Audio Output Against the Input Signal Strength Varaitions can be Set at any Given
value
b. Maximum Muting Attenuation can be Selected Between about 6dB to 40dB
c. Input Signal Strength level which Actuates the Muting Circuit can be Set Freely
D
High Limiting Sensitivity (25db碌 Typ. with Muting OFF) Provides a Fine Quieting Characteristic
D
High Signal鈥搕o鈥揘oise Ratio: 78dB Typ
D
Low Distortion (0.05% Typ) Available, if used with Double鈥揟uned Circuits
D
Good AM Rejection Ratio (63dB with 6 Stages of Differential IF Amplifiers)
D
Signal Merter Drive Output Proportional to the Input Signal Strength in dB
D
Clamped (鹵V
BE
) AFC Output, Bandwidth Adjustable
D
Delayed AGC Output for Front End Circuit
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
Maximum Supply Voltage (Pin12), V
CC
max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Maximum Supply Current (Pin12), I
CC
max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA
Allowable Power Dissipation, P
D
max
T
A
= +25擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 640mW
T
A
= +70擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460mW
Input Voltage (Pin1 to Pin2), v
i
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
鹵1V
P鈥揚(yáng)
Flow鈥揑n Current (Pin2, Pin3), I
2
, I
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
鹵0.2mA
Flow鈥揑n Current (Pin6), I
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Flow鈥揙ut Current (Pin5, Pin15, Pin16), I
5
, I
15
, I
16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA
Flow鈥揙ut Current (Pin13, Pin14), I
13
, I
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +125擄C
1
2
3
