ELECTRICAL CHARACTERISTICS (continued)

°C, unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

COMPOSITE BLANKING AND KEY PULSE (supersandcastle)

Key Pulse Output Peak Voltage

10

V

Line Blanking Voltage

4.25

4.5

4.75

V

Frame Blanking Voltage

2.38

2.5

2.63

V

Phase Relationship between Leading Edge of Key

Pulse and Middle of Sync. Pulse

2.5

µs

Key Pulse Duration

4

µs

Vertical Blanking Duration

1.4

ms

FRAME

Output p.p. Sawtooth Voltage

50Hz and 60Hz

2.7

V

Pedestal Voltage

0.3

V

LINE

Output Current

50

mA

Saturation Voltage

0.4

V

Output Pulse Duration

29

µs

SYNC. STATUS OUTPUT

Output Voltage

50Hz

60Hz

Unlock

6.25

12

7

7.45

0.3

V

V

V

OVERALL PHASE RELATION SHIP

Phase Difference between Middle of Flyback and

Middle of Sync. Pulses

2

µs

VERTICAL BLANKING OUT AND FLY. INPUT

Blanking Output Voltage

4

V

Flyback Threshold Input

5.7

V

Flyback Current Input

0.1

mA

2. The TDA8185I may be operated on a 5V supply directly. A 5.5 V shunt regulator is available internally for operation on higher

supply voltage ; in this case an external limiting resistor is required.

Without the external limiting resistor care must be taken to ensure that the supply voltage does not exceed 5.5V or the regulator

will intervene and the device could be damaged.

TDA8185I

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