AN5693 View Datasheet(PDF) - Panasonic Corporation

Part Name

Description

Manufacturer

AN5693

Luminance,Chroma and Sync. Signals Processing IC(with Built-in I2C bus Interface)for PAL/NTSC Color-TV

Panasonic Corporation 

ICs for TV

AN5693K

s Pin Equivalent Circuit(continued)

Pin No.

Equivalent Circuit

39

I51

typ. 15 mA

47 µF

VCC2 To hor. OSC

39

Voltage

regulating

circuit

Function

Horizontal Steady State Supply Pin :

• Steady state supply is used by horizontal

circuit startup. Internal voltage regulating

circuit is present

Status

DC

6.5 V

V39

6.5 V

40

2 kΩ 2 kΩ

1.9 V

AFC2

det.

circuit

1 kΩ 1 kΩ

I

From

40

DAC

(hor.

position)

max. 500 µA 0.022 µF

(VCC2)

To hor. out

V52

3.3 V

50 µA

I39

Horizontal AFC 2 Filter Pin :

DC

• FBP and IC internal pulse phase

1.5 V to 3.5 V

difference is compared. At Pin40, a

capacitor is connected for charging

and discharging this current

• The current from the picture centre

position adjustment DAC establishes

DC by chaging and discharging current

• Time difference from Hout to FBP-in

depends on V40 which changes the slice

level of internal sawtooth waveform

41

Horizontal AFC 1 Filter Pin :

DC typ. 4.3 V

AFC1

det.

circuit

Hor. sync.

1000 µA

4.3 V

R1

27 kΩ

(VCC2)

27 kΩ

41

1.5V

C2

10 µF

R2

2.2 kΩ

C1

0.018 µF

Hor.

OSC

200 µA

• Horizontal synchrous signal and IC

internal pulse phase difference is

compared. At Pin41, a capacitor is

connected for charging and discharging

current

• R1, R2, C1, C2, are lag-lead filter used

by AFC 1

Horizontal β curve

fH

V41

23

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