October 1994

13

Philips Semiconductors

Preliminary specification

YUV picture improvement processor based

on histogram modification

TDA9170

control voltage lower limit

−

1.75

−

V

control voltage upper limit

−

3.25

−

V

control voltage for linear transfer

−

2.5

−

V

input bias current

−

−

0.1

µA

Colour difference processing

input voltage

1.8

−

−

V

input voltage

1.8

−

−

V

input bias current (pins 5 and 7)

−

−

0.1

µA

input voltage level during

clamping

−

1.5

−

V

∆V

o28

output voltage range with

respect to the input (pin 28)

150

−

−

%

∆V

o26

output voltage range with

respect to the input (pin 26)

150

−

−

%

output voltage level during

clamping

−

2.3

−

V

offset error

transparent

−

−

1

%

gain error

transparent

−

−

5

%

B

bandwidth

transparent

20

30

−

MHz

Timing

fh

line frequency

15

−

16

kHz

Default window setting (with respect to start BK/CLP pulse)

default start window

−

6.5

⁄

64fh

−

default window stop

−

54.5

⁄

64fh

−

minimum start window

−

4.5

⁄

64fh

−

maximum start window

−

19.5

⁄

64fh

−

minimum window stop

−

26.5

⁄

64fh

−

maximum window stop

−

56.5

⁄

64fh

−

fv

vertical frequency

45

−

65

Hz

Default window setting (start event with respect to start detected field blanking, stop event with respect to start event)

default window start

−

64

−

lines

default window stop

−

161

−

lines

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT