TDA8376 datasheet(21/44 Pages) PHILIPS

21 / 44 page

1996 Jan 26

Philips Semiconductors

Objective speciﬁcation

I2C-bus controlled PAL/NTSC TV processors

TDA8376; TDA8376A

Horizontal synchronization circuits

SYNC VIDEO INPUTS(PINS 7, 9 AND 13)

V7,9,13

sync pulse voltage amplitude

note 7

300

−

SLHS

slicing level for horizontal sync

note 11

−

SLVS

slicing level for vertical sync

−

HORIZONTAL OSCILLATOR

ffr

free running frequency

−

15625

−

∆ffr

spread of free running frequency

−−

±2%

∆f/∆V

frequency variation with respect to

the supply voltage

VP =8V ±10%; note 2

−

0.2

0.5

∆f

(max)

maximum frequency variation with

temperature

Tamb = 0 to 70 °C; note 2

−−

FIRST CONTROL LOOP (FILTER CONNECTED TO PIN 44); note 12

fHR

frequency holding range PLL

−±0.9

±1.2

kHz

fCR

frequency catching range PLL

note 2

±0.6

±0.9

−

kHz

S/N

signal-to-noise ratio of the video

input signal at which the time

constant is switched

−

HYS

hysteresis at the switching point

−

SECOND CONTROL LOOP (CAPACITOR CONNECTED TO PIN 43)

∆ϕi/∆ϕo

control sensitivity

−

150

−µs/µs

tcr

control range from start of horizontal

output to ﬂyback at nominal shift

position

−µs

tshift

horizontal shift range

63 steps

±2

−−

µs

dync

control sensitivity for dynamic

compensation

−

5.3

−µs/V

V43

voltage to switch on the ‘ﬂash’

protection

note 13

−−

I43

input current during protection

−−

1mA

HORIZONTAL OUTPUT (PIN 40); note 14

VOL

LOW level output voltage

IOL =10mA

−−

0.3

IO(max)

maximum allowed output current

−−

VO(max)

maximum allowed output voltage

−−

duty factor

note 2

−

note 2; VHOUT = high;

during switch-on/switch-off

−

fswitch

frequency during switch-on and

switch-off

−

2fHOUT

−

tswitch(on)

switch-on time

−

tswitch(off)

switch-off time

RGB drive maximum

−

100

−

RGB drive minimum

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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