MAX5419 Maxim Integrated Products, MAX5419 Datasheet - Page 13

• Manufacturer Part Number: MAX5419
• Description: 256-Tap Nonvolatile I2C-Interface Digital Potentiometers
• Manufacturer: 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.
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).
V
Offset Voltage and Gain Adjustment
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
R
100kΩ
200kΩ
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
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
Figure 13. Offset Voltage and Gain Adjustment Circuit
PROCESS: BiCMOS
Digital Potentiometers
PACKAGE TYPE
TOP VIEW
8 TDFN-EP
L
R2
SDA
V
SCL
A0
DD
W
1
2
4
3
R1
PACKAGE CODE
Package Information
2
MAX5417
MAX5418
MAX5419
3
2
H
T833-1
TDFN
C-Interface,
7
-5V
Pin Configuration
5V
MAX410
Chip Information
1
4
8
www.DataSheet4U.com
7
6
5
8
H
W
L
GND
DOCUMENT NO.
6
MAX5417
MAX5418
MAX5419
21-0137
13