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LM1247 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM1247
Description  150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM1247 Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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Video Signal Electrical Characteristics (Continued)
Unless otherwise noted: T
A = 25˚C, VCC = +5.0V, VIN = 0.70 VP-P,VABL =VCC,CL = 8 pF, Video Outputs = 2.0 VP-P. Setting
numbers refer to the definitions in Table 1. See (Note 7) for Min and Max parameters and (Note 6) for Typicals.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
ABL TH
ABL Control Range upper limit
(Note 12), Test Setting 4, AC input
signal.
4.8
V
V
ABL Range
ABL Gain Reduction Range
(Note 12), Test Setting 4, AC input
signal.
2.8
V
A
V 3.5/AV Max
ABL Gain Reduction at 3.5V
(Note 12), Test Setting 4, AC input
signal. V
ABL = 3.5V
−2
dB
A
V 2.0/AV Max
ABL Gain Reduction at 2.0V
(Note 12), Test Setting 4, AC input
signal. V
ABL = 2.0V
−12
dB
I
ABL Active
ABL Input bias current during
ABL
(Note 12), Test Setting 4, AC input
signal. V
ABL =VABL MIN GAIN
10
µA
I
ABL Max
ABL input current sink capability
(Note 12), Test Setting 4, AC input
signal.
1.0
mA
V
ABL Max
Maximum ABL Input voltage
during clamping
(Note 12), Test Setting 4, AC input
signal. I
ABL =IABL MAX
V
CC +
0.1
V
A
V ABL Track
ABL Gain Tracking Error
(Note 9), Test Setting 4, 0.7 V
P-P
input signal, ABL voltage set to 4.5V
and 2.5V.
4.5
%
R
IP
Minimum Input resistance (pins 5,
6, 7)
Test Setting 4.
20
M
OSD Electrical Characteristics
Unless otherwise noted: T
A = 25˚C, VCC = +5.0V. See (Note 7) for Min and Max parameters and (Note 6) for Typicals.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OSDHIGH max
Maximum OSD Level with OSD
Contrast 11
Palette Set at 111, OSD Contrast =
11, Test Setting 3
4.5
V
V
OSDHIGH 10
Maximum OSD Level with OSD
Contrast 10
Palette Set at 111, OSD Contrast =
10, Test Setting 3
3.9
V
V
OSDHIGH 01
Maximum OSD Level with OSD
Contrast 01
Palette Set at 111, OSD Contrast =
01, Test Setting 3
3.2
V
V
OSDHIGH 00
Maximum OSD Level with OSD
Contrast 00
Palette Set at 111, OSD Contrast =
00, Test Setting 3
2.4
V
∆V
OSD (Black)
Difference between OSD Black
Level and Video Black Level (same
channel)
Register 08=0x18, Input Video =
Black, Same Channel, Test Setting
8
20
mV
∆V
OSD (White)
Output Match between Channels
Palette Set at 111, OSD Contrast =
11, Maximum difference between R,
G and B
3%
V
OSD-out (Track)
Output Variation between Channels OSD contrast varied from max to
min
3%
DAC Output Electrical Characteristics
Unless otherwise noted: T
A = 25˚C, VCC = +5.0V, VIN = 0.7V, VABL =VCC,CL = 8 pF, Video Outputs = 2.0 VP-P. See (Note 7)
for Min and Max parameters and (Note 6) for Typicals. DAC parameters apply to all 4 DACs.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
Min DAC
Min output voltage of DAC
Register Value = 0x00
0.5
0.7
V
V
Max DAC
Mode 00
Max output voltage of DAC
Register Value = 0xFF,
DCF[1:0] = 00b
3.7
4.2
V
V
Max DAC
Mode 01
Max output voltage of DAC in
DCF mode 01
Register Value = 0xFF,
DCF[1:0] = 01b
1.85
2.35
V
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