Rainbow Electronics MAX5183 - Manual (Page 9)

MAX5180/MAX5183
Dual, 10-Bit, 40MHz, Current/Voltage
Simultaneous-Output DACs
_______________________________________________________________________________________ 9
9.6k
I FS
0.1 µF 10 µF
AV DD
R SET
I REF
REFR
AV DD
*
REFO
+1.2V
BANDGAP
REFERENCE
CURRENT-
SOURCE ARRAY
EXTERNAL
+1.2V
REFERENCE
*9.6k Ω REFERENCE CURRENT-SET RESISTOR
INTERNAL TO MAX5183 ONLY. USE EXTERNAL
R
SET FOR MAX5180.
REN
MAX5180
MAX5183
MAX6520
AGND
AGND
AGND
R SET
Figure 3. MAX5180/MAX5183 with External Reference
R SET
9.6k
I FS C COMP *
REFR
I REF
**
REFO
MAX4040
+1.2V
BANDGAP
REFERENCE
CURRENT-
SOURCE ARRAY
*COMPENSATION CAPACITOR (C COMP
≈ 100nF).
**9.6k Ω REFERENCE CURRENT-SET RESISTOR
INTERNAL TO MAX5183 ONLY. USE EXTERNAL
R
SET FOR MAX5180.
OPTIONAL EXTERNAL BUFFER
FOR HEAVIER LOADS
REN
MAX5180
MAX5183
I REF =
V REF
R SET
R SET
AGND
AGND
AGND
Figure 2. Setting I FS with the Internal +1.2V Reference and the Control Amplifier