LA7950(2001) データシートの表示（PDF） - SANYO -> Panasonic

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LA7950
(Rev.:2001)

TV Field Frequency Discriminator

SANYO -> Panasonic 

LA7950

Operating Characteristics at Ta = 25˚C, V2=12V, See Test Circuit

Parameter

Symbol

Conditions

VCC2 current drain

Sync separation output voltage

Pin 1 DC voltage

Forced PAL operation start voltage

Forced PAL nonoperation max. votlage

Forced NTSC operation start voltage

Forced NTSC nonoperation min. voltage

Output saturation voltage

ICC2 Pin 1 GND

V3

20kΩ across pin 4 and GND

VDC1

VPOS

VPNH

VNOS

VNNL

V7, 8, 9, 10 I7, 8, 9, 10=10mA

Functional Blocks and Sample Applicationn Circuit 1

Ratings

Unit

min

typ

max

8

12

16 mA

10.5 11.0 11.5 V

4.8

5.3

5.8 V

11.2 V

8.6

V

0.4

V

2V

0.7 V

Number of horizontal scanning lines per field

(Number of horizontå l pulses)

Forced select SW

240 to 287

288 to 340

GND

+B

Discrimination of

field frequency

60Hz (NTSC)

50Hz (PAL)

60Hz (NTSC)

50Hz (PAL)

Output

Pins 7, 8 Pins 9, 10

off

on

on

off

off

on

on

off

Sample Applicationn Circuit 2 : Using dedicated clock (LA7808)

Continued on next page.

No.1351–2/3

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