Rainbow Electronics MAX5661 - Manual (Page 38)

MAX5661
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
38 _______________________________________________________________________________________
Typical Operating Circuit
MAX5661
OPTIONAL
SURGE
PROTECTION
REFERENCE
BUFFER
FULL-SCALE
OUTPUT
ADJUST
16-BIT
DAC
VOLTAGE-
TO-CURRENT
CONVERTER
I DAC
V DDI
V DDV
V SSV
V DDI
V DDV
V SSV
AGND
UNIPOLAR CURRENT BLOCK
(SOURCE ONLY)
+13.48V TO +40V
COMPI
OUTI
UNIPOLAR OR BIPOLAR
VOLTAGE BLOCK
SVN
SVP
OUTV
REF
22nF
COMPV
C COMPV
3.3nF**
DETAIL OF
OPTIONAL
SURGE PROTECTION
OPTIONAL
SURGE
PROTECTION
+4.096V
REFERENCE
+5V
R
R
R
R R
R R
2.5R
SERIAL
INTERFACE*
DIN
SCLK
CS
DOUT
CLR
LDAC
OUTI4/0
CNF0
CNF1
FAULT
DACGNDS DACGND
DGND AGND
DUTGND DUTGNDS
V CC V DDV V SSV V DDCORE
+4.75V TO +5.25V
+13.48V TO +15.75V -13.48V TO -15.75V
L OUTI *
* SEE THE DAC FUNCTIONAL DIAGRAM IN FIGURE 7.
** REQUIRED TO DRIVE C
OUTV < 1nF.
V DDV OR V DDI
MICROCONTROLLER
OPTIONAL
SURGE
PROTECTION
DAC
1k Ω