MAX5417 MAXIM [Maxim Integrated Products], MAX5417 Datasheet - Page 13

• Manufacturer Part Number: MAX5417
• Description: 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
• Manufacturer: MAXIM [Maxim Integrated Products]

Figure 11. Programmable Filter
Figure 12. Adjustable Voltage Reference
Figure 12 shows the MAX5417/MAX5418/MAX5419 used
as the feedback resistors in multiple adjustable voltage-
reference applications. Independently adjust the output
voltage of the MAX6160 from 1.23V to V
changing the wiper positions of the MAX5417/
MAX5418/MAX5419.
V
IN
MAX5417
MAX5418
MAX5419
MAX5417
MAX5418
MAX5419
H
Adjustable Voltage Reference
R3
______________________________________________________________________________________
W
V
V
V
0
0
0
= 1.23V
= 1.23V
= 1.23V
L
MAX6160
GND
+5V
V
R2
100kΩ
200kΩ
R
R
R
IN
50kΩ
2
C
2
2
H
L
(kΩ)
(kΩ)
(kΩ)
256-Tap, Nonvolatile, I
OUT
ADJ
FOR THE MAX5417
FOR THE MAX5419
FOR THE MAX5418
W
W
R1
H
L
V
0
IN
REF
V
OUT
- 0.2V by
Connect the high and low terminals of one potentiometer
of a MAX5417 between the NULL inputs of a MAX410
and the wiper to the op amp’s positive supply to nullify
the offset voltage over the operating temperature range.
Install the other potentiometer in the feedback path to
adjust the gain of the MAX410 (see Figure 13).
Figure 13. Offset Voltage and Gain Adjustment Circuit
TRANSISTOR COUNT: 4637
PROCESS: BiCMOS
Digital Potentiometers
TOP VIEW
Offset Voltage and Gain Adjustment
L
R2
SDA
V
SCL
A0
DD
W
1
2
4
3
R1
2
MAX5417
MAX5418
MAX5419
H
3
2
TDFN
C-Interface,
7
-5V
Pin Configuration
5V
MAX410
Chip Information
4
1
8
6
8
7
5
H
W
L
GND
6
MAX5417
MAX5418
MAX5419
13