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參數(shù)資料
| 型號(hào)： | LM2457 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大小： | 823K |
| 代理商： | LM2457 |
DC CLAMP Electrical Characteristic Targets and Limits
(See Figure 11 for Test Circuit)
Unless otherwise noted: V
= +80V, V
CC2
= 120V, V
BB
= +8V, V
IN
= 1.4V
DC
, T
C
= 50C, V
REF
= 1.735V, SW1 open.
HEATSINK MUST BE GROUNDED.
Symbol
I
CC2
Parameter
Conditions
Min
Typ
Max
Units
V
CC2
Supply Current
All Channel, No AC input signal,
V
IN
= 1.25V
No AC Input Signal, V
IN
= 1.4V
No AC Input Signal
No AC Input Signal (Note 6)
2.4
mA
V
OUT
A
VTYP
LE
TYP
Typical DC Output Voltage
Typical DC Voltage Gain
Typical Linearity Error
95
75
2
V
DC
%
Note 6:
Linearity Error is the variation in DC gain from V
IN
= 1.0V to V
IN
= 1.5V.
Clamp Amplifier Test Circuit
Figure 11 shows the test circuit for evaluation of the LM2457 clamp amplifier. A high impedance VM (
>
100 M
) is used for DC
measurements at the outputs.
DS101379-11
FIGURE 11. Test Circuit (One Channel)
DS101379-12
FIGURE 12. Clamp Circuit V
O
vs. V
IN
L
www.national.com
5
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