LA7945N 查看數據表（PDF） - SANYO -> Panasonic

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LA7945N

Closed Caption Signal (US specifications) Extraction IC

SANYO -> Panasonic 

LA7945N

Electrical and Operating Characteristics at Ta = 25˚C, VCC=5.0V, Input signal : sync-white 1.0V

Parameter

Symbol

Conditions

Ratings

Unit

min typ max

Horizontal pull-in range

Horizontal free-running frequency

Input clamping voltage

H LOCK filter threshold level

Synchronization separation output

H LOCK filter

Data output

Clock output

21H output

O/E output

Horizontal pulse output

Vertical pulse output

Input signal level

CLK-RUN-IN start time

Current drain

High level

Low level

High level

Low level

High level

Low level

High level

Low level

High level

Low level

Pulse width

High level

Low level

Pulse width

High level

Low level

Pulse width

High level

Low level

Pulse width

fHPULL

fHFREE

VCLMP

VLOCKTH

VSYNCH

VSYNCL

VLOCKH

VLOCKL

VDATAH

VDATAL

VCLKH

VCLKL

V21HH

V21HL

V21HW

VOEH

VOEL

VOEW

VHSH

VHSL

VHSW

VRSTH

VRSTL

VRSTW

VIN

TST

ICC

±1.5

kHz

15.3 15.7 16.3 kHz

2.3

2.5

2.7 V

2.3

2.5

2.7 V

4.0

4.2

5.0 V

0

0.8

1.0 V

4.0

4.2

5.0 V

0

0.8

1.0 V

4.0

4.2

5.0 V

0

0.8

1.0 V

4.0

4.2

5.0 V

0

0.8

1.0 V

4.0

4.2

5.0 V

0

0.8

1.0 V

60

65

70 µs

4.0

4.2

5.0 V

0

0.8

1.0 V

16.4 16.7 17.0 ms

4.0

4.2

5.0 V

0

0.8

1.0 V

7.4

7.7

8.0 µs

4.0

4.2

5.0 V

0

0.8

1.0 V

30.8 31.8 32.8 µs

–6

0

+3 dB

6.6

7.6

8.6 µs

14.0 18.0 22.0 mA

Note : Must not be pulled in to any frequency other than fH.

The pin 11 capacitor should be 100pF ±5%.

The pin 12 resistor should be 15kΩ ±1%.

No.4616–2/9

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