NTE1688

Integrated Circuit

TV Tuner Bandswitch

Description:

The NTE1688 is an integrated circuit in a 9–Lead SIP type package incorporating TV tuner band-

switch circuits and a 31V power supply circuit.

Features:

D Tuner Bandswitch Circuit with 31V Voltage Regulator

18V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

620mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20

° to +70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

° to +150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Input Threshold Voltage

1.5

–

2.5

V

Input Threshold Current

100

–

500

µA

Output Saturation Voltage

–

0.3

0.8

V

Pin8 Output Saturation Voltage

–

0.2

0.5

V

Voltage Regulator

29.5

31.7

33.5

V

Voltage Regulator with Ambient Temperature

–1.0

0

+1.0

mV/

°C

Voltage Regulator Voltage for Drift

As Per Condition After 5sec

Elapsed with SW ON

–

–

±50

mV

Input/Output Related (Logic Table)

Input

Output

Remarks

Pin3

Pin4

Pin1

Pin2

Pin7

Pin8

(Tuning Status)

L

L

Open

Open

L

UHF

H

L

Open

Open

Open

VHF–L

L

H

Open

Open

L

VHF–H

H

H

Open

Open

Open

–