OBSOLETE

LM1229

www.ti.com

SNOSAH0D – MARCH 2005 – REVISED APRIL 2013

Video Signal Electrical Characteristics (continued)

(1)(2)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

−5.8

dB

ABL input bias current during ABL.

(9)

10

µA

ABL input current sink capability

1.0

mA

ABL channel to channel gain

0

7.5

%

tracking error.

to 4.5V and 3.0V

Minimum input resistance

20

M

Ω

(pins 45, 46, 47)

OSD Electrical Characteristics

(1) (2)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

DIGITAL MODE

Maximum low input voltage,

Enable: video inputs selected

1.0

V

(OSD and Enable)

OSD: OSD black displayed

Minimum high input voltage,

Enable: OSD inputs selected

3.0

V

(OSD and Enable)

OSD: OSD colors displayed

OSD output amplitude

OSD Enable = 1, OSD Contrast = 11

2.65

V

OSD output amplitude

OSD Enable = 1, OSD Contrast = 10

2.35

V

OSD output amplitude

OSD Enable = 1, OSD Contrast = 01

2.15

V

OSD output amplitude

OSD Enable = 1, OSD Contrast = 00

1.75

V

OSD output amplitude (AUX)

OSD Enable = 1, OSD[5] = 1

3.0

V

Difference between OSD and video

Same channel, contrast and gain =

−85

100

mV

black levels

0x60

OSD Contrast = 11, maximum

Output Match between channels

3

%

difference between R, G and B

Output Variation between channels

OSD contrast varied from max to min

3

%

OSD background video maximum

100

%

level

10

%

ANALOG MODE

Analog gain from pins 41, 42, 43 to

the video outputs, with input level 0.7

OSD Enable = 1, Gains at maximum

3.75

V/V

BOTH MODES

Low input current (OSD and Enable)

−3.0

µA

High input current (OSD and Enable)

.001

µA

Crosstalk from video @ 10 kHz

−70

dB

Crosstalk from video @ 10 MHz

−50

dB

(1)

Datasheet min/max specification limits are specified by design, test, or statistical analysis. The ensured specifications apply only for the

test conditions listed. Some performance characteristics may change when the device is not operated under the listed test conditions.

(2)

Typical specifications are specified at +25°C and represent the most likely parametric norm.

(3)

In the transparency mode, the OSD background consists of video with contrast level determined by the Transparency Register. The

OSD foreground is unaffected.

(4)

input at the designated frequency and measure the video feedthrough at the video outputs.

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