TDA2579B View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TDA2579B

Horizontal/vertical synchronization circuit

Philips Electronics 

Philips Semiconductors

Horizontal/vertical synchronization circuit

Preliminary specification

TDA2579B

PARAMETER

Second control loop (pin 14)

(horizontal flyback to horizontal

oscillator)

Control sensitivity

Control range

Control range for constant duty

factor horizontal output

Controlled edge of horizontal

output signal (pin 11)

Phase adjustment (pin 14)

(via second control loop)

Control sensitivity

Maximum allowed control current

Horizontal oscillator (pin 15)

Frequency (no sync)

Spread (fixed external component,

no sync)

Frequency deviation between

starting point output signal

and stabilized condition

Temperature coefficient

Horizontal output (pin 11)

(Open collector)

Output voltage high

Start voltage protection

(internal zener diode)

Low input current (pin 16)

protection output enabled

Output voltage low start condition

Duty factor output current

during starting

Output voltage low normal

condition

Duty factor output current

without flyback pulse (pin 12)

Duration of the output pulse HIGH

Controlled edge

September 1990

CONDITIONS SYMBOL MIN.

TYP.

MAX. UNIT

td = 10 µs

∆ td / ∆ to 200

td

1

td

1

300

600

µs

−

>45

µs

29 (−t flyback

pulse)

µs

positive

td = 10 µs

−

25

−

µA/µs

I14

−

−

± 60

µA

C = 2.7 nF;

Rosc = 34.8 kΩ

f

−

15625 −

Hz

∆f

−

−

±4

%

∆f

−

+5

+8

%

TC

−

−1.10-4 −

/K

V11

V11

I16

I11 = 10 mA

V11

I16 = 6.2 mA

I11 = 25 mA

V11

td = 10 µs

13

−

−

13

−

−

5.0

−

0.1

50

60

−

0.3

45

50

27

29

positive

13.2

V

15.8

V

6.2

mA

0.5

V

70

%

0.5

V

55

%

31

µs

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