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National Semiconductor Electronic Components Datasheet

LM2480NA Datasheet

80V Triple Bias Clamp

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LM2480NA pdf
October 2001
LM2480
80V Triple Bias Clamp
General Description
The LM2480 driver is an Integrated 80V triple bias clamp
circuit for DC recovery of each of the AC coupled outputs of
a CRT driver. It is well matched with the DAC outputs of the
LM126X family of pre-amplifiers. Each amplifier has its gain
internally set to -18. The IC is packaged in an industry
standard 8 lead molded DIP package.
n Single supply operation
n Matched to the LM126X family of preamplifiers
Recommended Applications
n CRT monitors requiring DC restoration at the cathodes
Features
n Wide range integrated triple bias clamp
n High input impedance
Block Diagrams
Package Pinout
20008301
FIGURE 1. Simplified Schematic (One Channel)
20008302
FIGURE 2. LM2480 Package Pinout
Order Number LM2480NA
NS Package Number: N08E
© 2001 National Semiconductor Corporation DS200083
www.national.com


National Semiconductor Electronic Components Datasheet

LM2480NA Datasheet

80V Triple Bias Clamp

No Preview Available !

LM2480NA pdf
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage, VCC
Input Voltage, VIN
Storage Temperature Range, TSTG
Lead Temperature (Soldering,
<10sec.)
ESD Tolerance
+90V
0V to 5V
-65˚C to +150˚C
300˚C
Machine Model
Human Body Model
200V
2KV
Limits of Operating Ranges (Note 3)
VCC
VOUT
Ambient Temperature Range, TA
70V to 85V
10V to VCC
0 to 70˚C
DC CLAMP ELECTRICAL CHARACTERISTICS TARGETS AND LIMIT
Unless otherwise noted: VCC = +80V, VIN = 2.25VDC, TA = 25˚C.
Symbol
Spec Parameter
Conditions
Min Typ
ICC
VOUT
VOUT-Range
VOUTSAT
AV
LE
Supply Current
DC Output Voltage
Output Voltage Range
Max Saturation Limit
DC Voltage Gain
Linearity Error
All channels
VIN Range = 1.0V - 4.0V
VIN = 4.0V
See Note 1
2.1
42 46
53
16
-16 -18
5
RIN Input Resistance
34K
Max
3.5
50
-20
Units
mA
VDC
V
VDC
%
Note 1: Linearity Error is the variation in DC gain from VIN = 1.0V to VIN = 4.0V.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 3: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and
the 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 4: All voltages are measured with respect to GND, unless otherwise specified.
Test Circuit
20008303
FIGURE 3. Test Circuit (One Channel)
Figure 3 shows the test circuit for evaluation of the LM2480 Clamp Amplifier. A high impedance VM (>100M) is used for DC
measurements at the output.
www.national.com
2


Part Number LM2480NA
Description 80V Triple Bias Clamp
Maker National Semiconductor
Total Page 4 Pages
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