參數(shù)資料
型號(hào): LT6100
廠商: Linear Technology Corporation
英文描述: CAPACITOR
中文描述: 精密增益可選高壓側(cè)電流檢測(cè)放大器
文件頁數(shù): 9/16頁
文件大?。?/td> 257K
代理商: LT6100
9
LT6100
6100f
+
+
8
7
5
1
V
S–
R
G1
5k
LOAD
V
CC
2.7V TO 36V
R
G2
5k
V
IN
(
V
CC
+ 1.4V) TO 48V
R
R
O
50k
V
EE
R/3
A4
6
A2
3
FIL
4
V
S+
R
SENSE
V
OUT
6100 F01
A1
A2
Q1
V
O1
R
E
10k
R
25k
2
FU
W
Figure 1. Functional Diagram
PIU
V
S–
(Pin 1):
Negative Sense Input Terminal. Negative
sense voltage input will remain functional for voltages up
to 48V. V
S–
is connected to an internal gain-setting resis-
tor R
G2
= 5k.
V
CC
(Pin 2):
Supply Voltage Input. This power supply pin
supplies current to both current sense amplifier and op
amp.
FIL (Pin 3):
Filter Pin. Connects to an external capacitor to
roll off differential noise of the system. Pole frequency
f
–3dB
= 1/(2
π
R
FIL
C), R
FIL
= R
E
+ R
O
= 60k.
V
EE
(Pin 4):
Negative Supply or Ground for Single Supply
Operation.
V
OUT
(Pin 5):
Voltage Output Proportional to the Magni-
tude of the Current Flowing Through R
SENSE
:
V
OUT
= A
V
(V
SENSE
±
V
OS)
V
OS
is the input offset voltage. A
V
is the total gain of the
LT6100.
A2 (Pin 6):
Gain Select Pin. Refer to Table 1.
A4 (Pin 7):
Gain Select Pin. When Pin 7 is shorted to V
EE
,
the total gain is 40V/V. When both Pin 6 and Pin 7 are
shorted to V
EE
, the total gain is 50V/V. When both Pin 6 and
Pin 7 are opened, the total gain is 10V/V.
V
S+
(Pin 8):
Positive Sense Input Terminal. Connecting a
supply to V
S+
and a load to V
S–
will allow the LT6100 to
monitor the current through R
SENSE
, refer to Figure 1. V
S+
is connected to an internal gain setting resistor R
G1
= 5k.
V
S+
remains functional for voltages up to 48V.
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