Datasheet

Digitally Programmable Current Source Application
3-6
Table 3−5.Digitally Programmable Current Source Configuration
Jumper Setting
Reference
VOUTA VOUTD
Function
W25 1−2 1−2 VSS is tied to AGND
W1 1−2 N/A VOUTS1A is feedback to VOUTA
W20 N/A 1−2 VOUTS1D is feedback to VOUTD
W6 CLOSED N/A DAC A is configured for unipolar mode of operation
W9 N/A CLOSED DAC D is configured for unipolar mode of operation
W2 1−2 N/A DAC A is connected to J4−2
W10 N/A 1−2 DAC A is connected to J4−8
J4 1−2 7−8 DAC A or DAC D is connected to J5−2
J5 2−3 2−3 DAC A or DAC D is routed to the positive input of U2
TP9 CLOSED CLOSED Transistor, Q1, loop is closed
TP10 CLOSED CLOSED Transistor, Q2, loop is closed
Figure 3−2. Digitally Programmable Current Source
DAC Module
AGND
OFSR 1OFSR 2
DGND
V
OU T
V
CC
/V
SS
IOV
DD
V
OUT
S1
V
OUT
S2
TP1
125
+5 V
6.5-A Digital Current Meter
Q1
+5 V
+
−
+
−
Ohms
A