STROM–WANDLER–IC
RANDBEDINGUNGEN
Parameter
Sense Resistor
Symbol
R
0
R
0
Stabilisation Resistor
R
5
R
5
Load Resistance
Sum Gain Resistors
Sum Offset Resistors
V
REF
Capacitance
Output Capacitance
D
1
Breakdown Voltage
T
1
Forward Current Gain
R
L
R
1
+
R
2
R
3
+
R
4
C
1
C
2
V
BR
only for 2–wire operation
Conditions
I
OUTFS
= 20mA
c
= 20mA/I
OUTFS
I
OUTFS
= 20mA
c
= 20mA/I
OUTFS
limitation only for 3–wire operation
Min.
20
c
⋅
20
35
c
⋅
35
0
25
20
1.9
90
35
50
2.2
100
50
150
Typ.
25
c
⋅
25
40
c
⋅
40
AM442
Max.
29
c
⋅
29
45
c
⋅
45
600
50
200
5.0
250
Unit
Ω
Ω
Ω
Ω
Ω
kΩ
kΩ
µF
nF
V
β
F
FUNKTIONSDIAGRAMME
Spannungsreferenz
oder Stromquelle
R
A
3−Draht−System
V
S
V
V
IN
R
IN
IA
I
OUT
R
B
I
R
L
Ground
Abbildung 2
Spannungsreferenz
oder Stromquelle
R
A
2−Draht−System
V
S
V
V
IN
R
IN
IA
I
OUT
R
B
I
R
L
Ground
Abbildung 3
analog microelectronics
August 2001
4/9
AME [ ANALOG MICROELECTRONICS ]
