am422 AME, Inc., am422 Datasheet - Page 6

• Manufacturer Part Number: am422
• Description: Voltage/current Converter - Analog Microelectronics
• Manufacturer: AME, Inc.

VOLTAGE/CURRENT CONVERTER
the input voltage V
With the value of the relationship of the resistors R
the additional offset current can be calculated as
The value of the set resistor can then be found using equation 4
In respect to the load resistor R
The following relation is generally valid (see equation 1):
The resulting operating range is indicated in Figure 4. Sample calculations and typical values for the
external components are listed in the Application Notes (beginning page 8).
analog microelectronics
∆
V
I
R
R
SET
S
V
1
2
IN
t
PIN
=
Figure 4
has to change to
=
I
∆
4
OUTmax
500
300
R
I
V
=
OUTmin
L
0
IN
[:]
∆
∆
0
V
V
−
PIN
IN
R
∆
L
−
V
L
4
R



, the value of the supply voltage V

PIN
I
L
6
R
INmin
d
V
1
4
CCmin
R
V
+
2
S
I
R

OUTmax
=
2
12
V
.
I



CCmin
OUTmin
16
−
Operating Area
V
1
2
INmin
and R
R
24
0



2
R
1
R
+
2
R
V
R
I
OUTmax
2
CCmin
Lmax



S
35
has to be considered with care.
= 6V
= 500:
= 20mA
V
S
[V]
AM422
April 99
(10)
(11)
6/10
(8)
(9)