If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

80V Voltage, V

CC1

+90V

120V Supply V

CC2

+130V

Bias Voltage, V

BB

+15V

Input Voltage, V

IN

0V to 4V

V

0V to V

Storage Temperature Range, T

STG

−65˚C to +150˚C

Lead Temperature

300˚C

ESD Tolerance, Human Body

Model

2 kV

ESD Tolerance, Machine Model

200V

V

CC1

+60V to +85V

V

BOOST

V

V

BB

7.0V to +9V

V

IN

0.8V to +3.5V

V

REF

+1.6V to +1.9V

V

0V to 5.5V

V

OUT

+15V to +75V

V

CLAMP

+55V to +118V

Case Temperature

−20˚C to 100˚C

AC Driver Electrical Characteristics

(See

Figure 4 for Test Circuit)

Unless otherwise noted: V

V

Symbol

Parameter

Conditions

Min

Typ

Max

Units

I

CC1MAX

V

All 3 Channels, No Output Load

32

mA

I

BBMAX

Maximum Bias Current

All 3 Channels

15

mA

V

OUTTYP

Typical DC Output Voltage

V

61

65

69

V

DC

A

VTYP

Typical DC Voltage Gain

No AC Input Signal

−52

T

RTYP

Typical Rise Time

10% to 90%, (Note 5)

7.5

ns

+OS

Overshoot on Rising Edge

5

%

t

FTYP

Typical Fall Time

90% to 10%, (Note 5)

7.5

ns

−OS

Overshoot on Falling Edge

1

%

LE

TYP

Typical Linearity Error

V

6

%

Note 1: Limits of “Absolute Maximum Ratings” indicate limits below which damage to the device will not occur.

Note 2: Limits of “Operating Ratings” indicate required boundaries of conditions for which the device is functional, but is not guaranteed to meet specific performance

limits.

Note 3: All voltages are measured with respect to GND, unless otherwise specified.

Driver Test Circuit

Figure 4 shows the test circuit for the LM2457. This circuit allows testing of the LM2457 in a 50

Ω environment as well as with a

FET probe. The 4950

Ω resistor at the output forms a 200:1 voltage divider when connected to a 50Ω load. C

flatten the frequency response of the 200:1 divider. Performance will be affected slightly by the 5K load.

DS101379-4

FIGURE 4. Test Circuit (One Channel)

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