LM1292 National Semiconductor, LM1292 Datasheet - Page 3

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LM1292

Manufacturer Part Number
LM1292
Description
Video PLL System for Continuous-Sync Monitors
Manufacturer
National Semiconductor
Datasheet

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LM1292N
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H Drive Low Level Output Voltage (Pin
19)
H Drive EN Low Level Input Voltage (Pin
14)
H Drive EN High Level Input Voltage (Pin
14)
X-Ray Shutdown Threshold Voltage (Pin
15)
H/HV Sync Out Propagation Delay
Change
Clamp Pulse Width
Clamp Pulse Delay
Electrical Characteristics
otherwise stated (Continued)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2: Operating Ratings 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 de-
grade 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: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation at any elevated temperature is P
this device, T
Note 5: Human Body model, 100 pF capacitor discharged through a 1.5 k
Note 6: Typical specifications are at T
Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: The typical duty cycle range allowed for the H sync tip is from 5%–26%.
Note 9: The standard deviation, , of the flyback pulse period is measured with HP 53310A Modulation Domain Analyzer. Peak-to-peak jitter of the flyback pulse is
defined by 6 .
Note 10: Phase Limits:
expressed as a fraction of the horizontal period T
positive phase value represents a phase lead of the FBP peak with reference to the leading edge of H sync.
JMAX
Parameter
= 150˚C. The typical thermal resistance (
A
= 25˚C and represent most likely parametric norm.
H
, where T
See Test Circuit ( Figure 2 ); T
I
H Drive Output Active
H Drive Output Open (Unlatched)
V
Output Open (Latched)
H/HV In vs Comp Video In
(Back Porch)R
(Back Porch)R
(Sync Tip)R
(Back Porch) Trailing Edge H/HV Sync
In to Leading Edge Clamp Pulse
(Sync Tip) Leading Edge H/HV Sync In
to Leading Edge Clamp Pulse
,
OL
15
DFB
D
JA
= 100 mA
Above Threshold, H Drive
= (T
) of these parts when board mounted follow: LM1292N 50˚C/W.
is the horizontal output transistor turn-off delay from the rising edge of H Drive to the FBP peak. A
JMAX
SET
− T
SET
SET
Conditions
A
resistor.
= 15 k ; V
)/
JA
3
= 15 k ; V
= 15 k ; V
or the number given in the Absolute Maximum Ratings, whichever is lower. For
SET
A
= 25˚C; V
SET
SET
= 4V
= 0V
= 1.5V
JMAX
CC
,
JA
= 12V; V
and the ambient temperature, T
0.025 T
(Note 6)
Typical
0.7
1.8
0.4
1.4
0.6
0.1
32
14
H
= 0V; V
(Note 7)
15
Limit
0.8
2.0
1.7
1.9
= 0V unless
A
. The maximum
www.national.com
V (Max)
V (Max)
V (Min)
V (Min)
Units
ns
µs
µs
µs
µs
V
s

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