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General Description
The MAX5527/MAX5528/MAX5529 linear-taper digital
potentiometers perform the same function as mechanical
potentiometers, replacing the mechanics with a simple
2-wire up/down digital interface. These digital poten-
tiometers provide an optional one-time programmable
feature that sets the power-on reset position of the wiper.
Once the wiper position is programmed, the 2-wire inter-
face can be disabled to prevent unwanted adjustment.
The MAX5527/MAX5528/MAX5529 provide an end-to-end
resistance of 100kΩ, 50kΩ, and 10kΩ, respectively. The
devices feature low temperature coefficients of 35ppm/°C
end-to-end and 5ppm/°C ratiometric. All devices offer 64
wiper positions and operate from a single +2.7V to +5.5V
supply. An ultra-low, 0.25µA (typ) standby supply current
saves power in battery-operated applications.
The MAX5527/MAX5528/MAX5529 are available in
3mm x 3mm, 8-pin TDFN and 5mm x 3mm, 8-pin
µMAX
®
packages. Each device is guaranteed over the
-40°C to +105°C temperature range.
Applications
Products Using One-Time Factory Calibration
Mechanical Potentiometer Replacements
Features
o Wiper Position Stored After One-Time Fuse
Programming
o 64 Tap Positions
o Wiper Position Programmed Through Simple
2-Wire Up/Down Interface
o 35ppm/
°°
C End-to-End Temperature Coefficient
o 5ppm/
°°
C Ratiometric Temperature Coefficient
o Ultra-Low 1.5µA (max) Static Supply Current
o +2.7V to +5.5V Single-Supply Operation
o 10kΩ, 50kΩ, and 100kΩ End-to-End Resistances
o Tiny, 3mm x 3mm, 8-Pin TDFN and 5mm x 3mm,
8-Pin µMAX Packages
MAX5527/MAX5528/MAX5529
One-Time Programmable, Linear-Taper Digital
Potentiometers
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3665; Rev 1; 7/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART PIN-PACKAGE
RESISTANCE
(kΩ)
TOP
MARK
MAX5527GTA+ 8 TDFN-EP* 100 AOG
MAX5527GUA+ 8 µMAX 100 —
MAX5528GTA+ 8 TDFN-EP* 50 AOH
MAX5528GUA+ 8 µMAX 50 —
MAX5529GTA+ 8 TDFN-EP* 10 AOI
MAX5529GUA+ 8 µMAX 10 —
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
Note: All devices are specified over the -40°C to +105°C operat-
ing temperature range.
1
H
V
DD
CS
GND
µMAX
TDFN*
TOP VIEW
2
3
4
L
U/D
PV
8
7
6
5
W
*EXPOSED PADDLE. CONNECT TO GND.
MAX5527
MAX5528
MAX5529
1
H
V
DD
CS
GND
23 4
L
U/D
PV
87 6 5
W
MAX5527
MAX5528
MAX5529
Pin Configurations
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Functional Diagram
MAX5527
MAX5528
MAX5529
64-
POSITION
DECODER
UP/DOWN
COUNTER
ONE-TIME
PROGRAM
BLOCK
V
DD
GND
CS
U/D
PV
L
H
W
R
62
R
61
R
1
R
0
S
63
S
62
S
61
S
2
S
1
S
0
R
W
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