LM1253AN National Semiconductor, LM1253AN Datasheet - Page 7

• Manufacturer Part Number: LM1253AN
• Description: Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator
• Manufacturer: National Semiconductor

V
F
V
V
V
(See Figure 3 for Test Circuit)
Unless otherwise noted: V
FREE_RUN
CCDET
IL
IH
OL
External Interface Signals Electrical Characteristics
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2: Operating Ranges indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and
test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may
change when the device is not operated under the listed test conditions.
Note 3: All voltages are measured with respect to GND, unless otherwise specified.
Note 4: Linearity Error = 100
Where: The input signal is a 16 step staircase signal waveform with 0.7 V
step
step
step
Note 5: Input from signal generator: t
Note 6: ABL should provide smooth decrease in gain over the operational range of 0 dB to −5 dB
Test Circuit
Note: 8 pF load includes parasitic capacitance
A
ABL
Symbol
max
min
ave
= A(V
is the minimum voltage step at the output
is the average voltage of the 16 steps at the output.
is the maximum voltage step at the output
ABL
= V
ABL MAX GAIN
V
Free Run HBLANK Frequency
Low Level Input Voltage for SDA and SCL
Pins
High Level Input Voltage for SDA and SCL
Pins
Low Level Output Voltage for SDA and SCL
Pins
CC
Undervoltage Detection Threshold
*
(step
CC
)–A (V
max
= +5V, V
r
, t
–step
f
ABL
<
Parameter
1 ns.
= V
min
)/step
ABL MIN GAIN
IN
= 0.7V, C
ave
)
L
FIGURE 3. Test Circuit
= 8 pF, Video Signal Output = 1 V
P-P
level, subdivided into 16 equal steps, with each step approximately 100 ns in width
7
3 mA Sink Current
Conditions
PP
(Continued)
, T
A
= 25˚C, V
Min
30
3
0
LM1253A
ABL
Typ
3.9
= V
CC
Max
.
1.5
0.4
60
www.national.com
DS101265-3
Units
kHz
V
V
V
V