MAX5527 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – One-Time Programmable, Linear-Taper Digital Potentiometers

19-3665; Rev 1; 7/09
EVAALVUAAILTAIOBNLEKIT
One-Time Programmable, Linear-Taper Digital
Potentiometers
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
Pin Configurations
TOP VIEW
W1
8H
CS 2
7L
Features
♦ Wiper Position Stored After One-Time Fuse
Programming
♦ 64 Tap Positions
♦ Wiper Position Programmed Through Simple
2-Wire Up/Down Interface
♦ 35ppm/°C End-to-End Temperature Coefficient
♦ 5ppm/°C Ratiometric Temperature Coefficient
♦ Ultra-Low 1.5μA (max) Static Supply Current
♦ +2.7V to +5.5V Single-Supply Operation
♦ 10kΩ, 50kΩ, and 100kΩ End-to-End Resistances
♦ Tiny, 3mm x 3mm, 8-Pin TDFN and 5mm x 3mm,
8-Pin µMAX Packages
Ordering Information
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 +85°C operat-
ing temperature range.
VDD ₃
GND 4
8
MAX5527
MAX5528
MAX5529
μMAX
7
6
6 _U/D
5 PV
5
MAX5527
MAX5528
MAX5529
1
2
3
4
Functional Diagram
H
S₆₃
V_DD
MAX5527
GND
MAX5528
MAX5529
R₆₂
S₆₂
R₆₁
CS
UP/DOWN
S₆₁ R_W
U/D
COUNTER
64-
POSITION
W
DECODER
S₂
ONE-TIME
PROGRAM
PV
BLOCK
R₁
S₁
R₀
TDFN*
*EXPOSED PADDLE. CONNECT TO GND.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
S₀
L
________________________________________________________________ Maxim Integrated Products 1
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.