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参数资料
| 型号： | NTE748 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit TV Sound Circuit |
| 中文描述： | 集成电路电视音响电路 |
| 文件页数： | 1/2页 |
| 文件大小： | 23K |
| 代理商： | NTE748 |
NTE748
Integrated Circuit
TV Sound Circuit
Description:
The NTE748 is an integrated circuit in a 14–Lead DIP type pacjage designed for IF limiting, detection,
audio preamplifier and driver for the sound portion of a TV receiver.
Features:
Excellent Limiting with 80
μ
V(rms) Input Signal typ
Large Output–Voltage Swing–to 3.5V(rms) typ
High IF Voltage Gain–65dB typ
Zener Power–Supply Regulation Built–in
Short–Circuit Protection
A Coincidence Discriminator that Requires Only One RLC Phase Shift Network
Preamplifier to Drive a Single External–Transistor Class–A Audio Output Stage
Absolute Maximum Ratings:
(T
A
= +25
°
C unless otherwise specified)
Power Supply Voltage, V+
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage, V
in
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Package Limitation), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate above +25
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+16V
0.7V
(rms)
625mW
5.0mW/
°
C
0
°
to +75
°
C
–65
°
to +150
°
C
Electrical Characteristics:
(V+ = 12V, T
A
= +25
°
C, f = 4.5MHz, Deviation =
±
25kHz unless
otherwise specified)
Symbol
Test Conditions
Parameter
Min
Typ
Max
Unit
μ
V
rms
dB
Input Voltage
V
L
–3dB Limiting
–
80
160
AM Rejection
AMR
V
in
= 20mV
rms
,
AM = 30%,
AMR = 20 log,
Note 1
V
OFM
: f = 4.5MHz,
Deviation =
±
25kHz, Q
L
= 24
V
OAM
: f = 5.5MHz,
Deviation =
±
50kHz, Q
L
= 30
–
45
–
–
45
–
dB
Total Harmonic Distortion
THD
Q
L
= 24, 7.5kHz Deviation, Note 1
Audio Gain Adjusted Externally, Q = 24, Note 1
–
1.0
–
%
Maximum Undistorted Audio
Output Voltage (Pin10)
V
o(max)
–
3.5
–
V
rms
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