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參數(shù)資料
| 型號： | LM2457TA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PZFM15 |
| 封裝： | TO-220, 15 PIN |
| 文件頁數(shù)： | 10/14頁 |
| 文件大?。?/td> | 823K |
| 代理商： | LM2457TA |
DC CLAMP Electrical Characteristic Targets and Limits (See Figure 11 for Test Circuit)
Unless otherwise noted: V
CC1 = +80V, VCC2 = 120V, VBB = +8V, VIN = 1.4VDC,TC = 50C, VREF = 1.735V, SW1 open.
HEATSINK MUST BE GROUNDED.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
CC2
V
CC2 Supply Current
All Channel, No AC input signal,
V
IN = 1.25V
2.4
mA
V
OUT
Typical DC Output Voltage
No AC Input Signal, V
IN = 1.4V
95
V
DC
A
VTYP
Typical DC Voltage Gain
No AC Input Signal
75
LE
TYP
Typical Linearity Error
No AC Input Signal (Note 6)
2
%
Note 6: Linearity Error is the variation in DC gain from VIN = 1.0V to VIN = 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. VIN
LM2457
www.national.com
5
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