KA2500 datasheet(12/28 Pages) SAMSUNG

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I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER FOR MONITORS

KA2500

AC Electrical Characteristics

Ta = 25

°C, V

CC1 = VCC2 = VCC3 = 12V; V4 = 0V.

Vin = 0.56Vpp Manually adjust Video Output pins 21, 24 and 26 to 4V DC for the AC test (11) unless otherwise

stated(12)

OSD Electrical Characteristics

Ta = 25 °C, VCC1 = VCC2 = VCC3 = 12V; V19 = 4V; V12 = V28 = 0V;

V1 = V2 = V3 = 4V; V4 = 4V; unless otherwise stated

Table 6. AC Electrical Characteristics

Parameter

Symbol

Min

Typ

Max

Unit

Video Amplifier Gain

AV max

15.5

17.5

19.5

Contrast Attenuation 1

Avc1

-4.5

-6.0

-7.5

Contrast Attenuation 2

Avc2

-38

-35

Drive Attenuation1

Avd1

-3

-4

-5

Drive Attenuation 2

Avd2

-11

-8

-5

Absolute Gain Match

AV match

(6)

-1

Gain Change between Amplifiers

AV track

(7)

-1

Video Amplifier Distortion

THD

Video Amp Bandwidth (7,8)

f (-3dB)

130

150

MHz

Video Output Rise Time (7)

tr (Video)

2.3

2.8

Video Output Fall Time (7)

tf (Video)

3.2

4.0

Video Amplifier 10kHz Isolation

Viso_10K(9)

-65

-45

Video Amplifier 10MHz Isolation

Viso_10M(7,9)

-50

-35

Blank Output Rise Time (7)

tr (Blank)

Blank Output Fall Time (7)

tf (Blank)

End of Blanking Propagation Delay

tr-prop (Blank)

Start of Blanking Propagation Delay

tf-prop (Blank)

Table 7. OSD Electrical Characteristics

Parameter

Symbol

Min

Typ

Max

Unit

OSD Input Low Input Voltage

VOSDI

0.4

1.3

3.0

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