NTE NTE1249

NTE1249
Integrated Circuit
Balancd Modulator
Description:
The NTE1249 is a balancd modulator circuit in a 7–Lead SIP type package designed for use in SSB
CB equipment.
Features:
D Low Operating Voltage
D High Carrier Suppression
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15mA
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22mW
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Total Circuit Current
Symbol
Itot
Test Conditions
V6 = 12V
Min
Typ
Max
Unit
6.5
9.5
12.5
mA
Zener Voltage
V5 – 4
–
6.15
–
V
Signal Input Terminal Voltage
V1 – 4
–
3.1
–
V
Carrier Input Terminal Voltage
V3 – 4
–
3.4
–
V
Output Terminal Voltage
V7 – 4
–
8.6
–
V
–6
–3
0
dBm
40
50
–
dB
BM AC Output Voltage
Carrier Suppression
VO (BM) V6 = 9V
SC
Pin Connection Diagram
(Front View)
.728 (18.5) Max
7
Modulator Carrier Output
6
VCC
5
DC Source Balance/Modulator Control
4
GND
3
Carrier Input
2
Modulator Level Control
1
Balance Control/Audio Input
.118 (3.0)
.248
(6.3
Max
.095 (2.42)
1
7
.118 (3.0) Min
.100 (2.54)
.600 (15.24)
.012 (0.32)