參數(shù)資料
型號(hào): REF200AU
英文描述: DUAL CURRENT SOURCE/CURRENT SINK
中文描述: 雙路電流源/電流源
文件頁(yè)數(shù): 7/15頁(yè)
文件大?。?/td> 250K
代理商: REF200AU
REF200
7
100μA/200μA
4
5
3
In
Out
Com
Mirror
Compliance to –V + 1.5V
+V
S
100μA
100μA
S
–V
FIGURE 6. Improved Low-Voltage Compliance.
FIGURE 7. 100
μ
A Current Source—80V Compliance.
100μA
100μA
±
±
40k
40k
0.01μF
0.01μF
1N4148
1N4148
1N4148
1N4148
(e) Bidirectional 200μA
cascoded current source.
100μA
100μA
40k
40k
0.01μF
0.01μF
(d) Floating 200μA cascoded
current source.
100μA
L
o
a
d
–V
S
+V
S
(a) Compliance approximate
to Gnd. HV compliance
limited by FET breakdown.
100μA
L
o
a
d
+V
S
(b) Compliance to +V – 5V.
High
Low
100μA
–V
S
33k
0.01μF
100μA
L
o
a
d
+V
S
(c)
–V
S
27k
5.1V
1N4689
NOTES: (1) FET cascoded current sources offer improved output impedance and high frequency operation. Circuit in (b)
also provides improved PSRR. (2) For current sinks (Circuits (a) and (b) only), invert circuits and use “N” channel JFETS.
FIGURE 8. FET Cascode Circuits.
101
100
99
0
10
20
30
Applied Voltage (V)
40
50
60
70
80
Provides 2X Higher Compliance Voltage
SERIES-CONNECTED CURRENT SOURCES
CURRENT vs APPLIED VOLTAGE
C
100μA
100μA
High
Low
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參數(shù)描述
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