LM1267
OSD Electrical Characteristics
(Continued)
Unless otherwise noted: T
A
= 25˚C, V
CC
= +5V, V
IN
= 0.7V, V
ABL
= V
CC
, C
L
= 8 pF, Video Signal Output = 2 V
P-P
, Test Set-
ting 8.
Symbol
∆t
OSD/OSD S
V
feed
10 kHz
V
feed
10 MHz
Parameter
Output Skew Time between
OSD and OSD Select
Video Feedthrough into OSD
Video Feedthrough into OSD
Conditions
Measured from 50% Point on
all Waveforms
OSD Inputs = 0V
OSD Inputs = 0V
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
ns
dB
dB
±
2.0
−70
−60
External DAC Signals Electrical Characteristics
Unless otherwise noted: T
A
= 25˚C, V
CC
= +5V, V
IN
= 0.7V, V
ABL
= V
CC
, C
L
= 8 pF, Video Signal Output = 2 V
P-P
. The fol-
lowing apply for all four external DACs.
Symbol
V
Min DAC
V
Max DAC
Mode 00
V
Max DAC
Mode 11
∆V
Max DAC
(Temp)
∆V
Max DAC
(V
CC
)
Linearity
Monotonicity
Parameter
Min DAC Output Voltage
Max DAC Output Voltage
Max Output Voltage of DACs
1–3 in DCF Mode 11
Variation of any DAC output
voltage with temperature
Variation of any DAC output
voltage with V
CC
Linearity of DAC Over its
Range
Monotonicity of the DAC
Excluding dead zones at limits
of DAC
Conditions
Value = 00h
Value = FFh, DCF[1:0] = 00h
(no load)
Value = FFh, DCF[1:0] = 11h,
DAC4 Value = 00h
0˚C
<
T
<
70˚C ambient
4.75V
<
V
CC
<
5.25V
3.6
1.85
Min
(Note 7)
Typ
(Note 6)
0.5
4.2
2.1
2.35
Max
(Note 7)
0.75
Units
V
V
V
mV/deg
mV/V
%
LSB
±
0.5
±
50
5
±
0.5
External Interface Signals Electrical Characteristics
Unless otherwise noted: T
A
= 25˚C, V
CC
= +5V, V
IN
= 0.7V, V
ABL
= V
CC
, C
L
= 8 pF, Video Output = 2 V
P-P
.
Symbol
V
l
(I
2
C)
V
h
(I C)
I
l
(I C)
I
h
(I
2
C)
t
H-Blank on
t
H-Blank off
I
In Threshold
I
In-Operating
2
2
Parameter
I
2
C Low Input Voltage
I C High Input Voltage
I C Low Input Current
I
2
C High Input Current
H-Blank Time Delay from Zero
Crossing Point of H Flyback
H-Blank Time Delay from Zero
Crossing Point of H Flyback
I
In
H-Blank Detection
Threshold
Minimum — Insure Normal
Operation
Maximum — Should Not
Exceed in Normal Operation
Peak Current during Flyback
Period, Recommended Design
Range
2
2
Conditions
SDA or SCL Inputs
SDA or SCL Inputs
SDA or SCL Inputs, Input
Voltage = 0V
SDA or SCL Inputs, Input
Voltage = 5V
Rising Edge of the Flyback
Signal
Falling Edge of the Flyback
Signal
Min
(Note 7)
−0.5
3.0
1.9
0.3
Typ
(Note 6)
0.5
4.0
2.2
0.6
50
50
−20
Max
(Note 7)
1.5
5.0
2.5
0.9
Units
V
V
µA
µA
ns
ns
µA
Lowest Operating Horizontal
Frequency in Given Application
(Note 17)
Operating Range for all
Horizontal Scan Frequencies,
Maximum Current Should Not
Exceed 2 mA (Note 17)
−30
−300
µA
I
In Flyback
0.5
1.5
2.0
mA
Note 1:
Limits of Absolute Maximum Ratings indicate limits below which damage to the device must not occur.
Note 2:
Limits of operating ratings indicate required boundaries of conditions for which the device is functional, but may not meet specific performance limits.
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