NTE NTE1249 Datasheet

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, V
Supply Current, I
Power Dissipation, P

CC

CC

D

Operating Ambient Temperature Range, T
Storage Temperature Range, T

stg

opr

–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14.4V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (TA = +25°C unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Total Circuit Current I
Zener Voltage V

Signal Input Terminal Voltage V
Carrier Input Terminal Voltage V
Output Terminal Voltage V
BM AC Output Voltage V
Carrier Suppression SC 40 50 – dB

tot

5 – 4
1 – 4
3 – 4
7 – 4

O (BM)V6

V6 = 12V 6.5 9.5 12.5 mA

– 6.15 – V
– 3.1 – V
– 3.4 – V
– 8.6 – V

= 9V –6 –3 0 dBm

Pin Connection Diagram

(Front View)

7

Modulator Carrier Output
V

6

DC Source Balance/Modulator Control

5

GND

4

Carrier Input

3

Modulator Level Control

2
1

Balance Control/Audio Input

CC

.728 (18.5) Max

.118 (3.0)

.248

(6.3

Max

.095 (2.42)

17

.118 (3.0) Min

.100 (2.54)

.600 (15.24)

.012 (0.32)