參數(shù)資料
型號(hào): REF200
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): 9/15頁(yè)
文件大?。?/td> 250K
代理商: REF200
REF200
9
R
100μA
Reference
–V
100μA
S
R
2
0.01μF
R
(N R )
2
1
I = N 100μA
(1)
R
(N R )
2
1
I = N 100μA
(1)
100μA
0.01μF
R
2
+V
S
+V
100μA
S
OPA602
0.01μF
NR
I = (N +1) 100μA
R
0.01μF
NR
I = (N +1) 100μA
R
100μA
OPA602
0.01μF
NR
I = (N +1) 100μA
10pF
(a)
(b)
(d)
(c)
(e)
–V
S
OPA602
R
NR
4k
9k
9.9k
I
OUT
500
μ
A
1mA
10mA
1k
1k
100k
EXAMPLES
FEATURES:
(1) Zero volts shunt compliance.
(2) Adjustable only to values above
reference value.
NOTE:
Current source/sink swing to the
“Load Return” rail is limited only
by the op amp's input common
mode range and output swing
capability. Voltage drop across “R”
can be tailored for any amplifier to
allow swing to zero volts from rail.
NOTE: (1) Burr Brown
OPA602 or OPA128
EXAMPLES
R
1
R
2
I
OUT
1nA
1
μ
A
1mA
100
10k
10k
10M
1M
1k
Use OPA128
I
= 100
μ
A (N + 1). Compliance
3.5V
with 0.1V across R. Max I
limited by FET.
For I
O
= 1A, R = 0.1
, NR = 1k
.
FIGURE 10. Adjustable Current Sources.
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