LVA519 查看數據表（PDF） - Mitsumi

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LVA519

Sync Separator with AFC Monolithic IC

Mitsumi 

MITSUMI

Sync Separator with AFC LVA519

Measuring Procedures (Except where noted otherwise, Ta=25°C, VCC=5.0V, VIN=2.0VP-P)

Item

Switch state

Symbol

S1 S2 S3 S4 S5

Measuring Procedures

Consumption current Id B B A A A Connect a DC ammeter to VCC pin.

Horizontal sync (H) VHH B A B B A Input standard color bar 2VP-P.

output

(L) VHL B A B B A Measure at TP5

Vertical sync (H) VVH B A B B A Input standard color bar 2VP-P.

output

(L) VVL B A B B A Measure at TP4.

Free-running frequency

fO

setting range

A B B B A Adjust VR1 and measure frequency at TP5.

Power supply fluctuation of

free-running frequency

With fo at 15.73kHz, vary Vcc between 4.0V~6.0V

fO1 A B B B A

and measure at TP5.

Free-running frequency

temperature coefficient

With fo at 15.73kHz, vary temperature between

fO2 A B B B A

-20°C and 80°C and measure at TP5.

Capture range

* fC B/A A B B A Input standard color bar 2VP-P and measure at TP1 and TP5. 1

Lock range

* fL B/A A B B A Input standard color bar 2VP-P and measure at TP1 and TP5. 1

* AFC output delay time td A/B A B B A Input standard color bar 2VP-P and measure at TP2 and TP5. 2

* AFC output pulse width Pw A/B A B B A Input standard color bar 2VP-P and measure at TP5. 2

Schmitt trigger

threshold

(H) VtHH

* B A B B A Measure at TP3 and TP4. 3

(L) VtHL

Measuring Procedures (Except where noted otherwise, Ta=25°C, VCC=5.0V, VIN=2.0VP-P)

Item

Symbol

S1

Sync separation

VSEPA B

level

AFC switching

RAFC B

resistance

Switch state

S2 S3 S4

ABB

ABB

Measuring Procedures

S5

Raise horizontal sync signal level of input standard

A color bar 2VP-P and measure the level when a signal

is output at TP5.

With Fo at 15.73kHz, vary Iafc, and determine

according to Iafc value when TP5 output signal

B

switches to a composite signal, and TP6 voltage V6.

RAFC=V6/IA1

Notes:

*1 Capture range (fc)

15.73KHz

Vary VR1 between max min and min max with SW1, and for each

lock make SW1 A and measure at TP5.

fc1

fc2 Data : fC1 and fC2 smaller value

Lock range (fL)

15.73KHz

fL1

fL2

With SW1 at B and locked, vary VR1 and when the lock is released,

make SW1 A and measure at TP5.

Data : fL1 and fL2 smaller value

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