MAX5429 Maxim Integrated Products, MAX5429 Datasheet
MAX5429
Manufacturer Part Number
MAX5429
Description
(MAX5427 - MAX5429) Linear-Taper Digital Potentiometers
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5429.pdf
(10 pages)
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The MAX5427/MAX5428/MAX5429 linear-taper digital
potentiometers function as mechanical potentiometers,
but replace the mechanics with a simple 2-wire digital
interface. These digital potentiometers are unique in that
they have an optional one-time programmable feature
that either sets the wiper’s power-on reset (POR) posi-
tion to a user-defined value, or the wiper can be set and
the interface disabled to prevent further adjustment.
The MAX5427 has an end-to-end resistance of 100k ,
the MAX5428 a resistance of 50k , and the MAX5429 a
resistance of 10k . All these devices have 32 wiper
positions, operate from a single 2.7V to 5.5V supply, and
use less than 1.5µA (max) static supply current.
The MAX5427/MAX5428/MAX5429 are available in
8-pin thin QFN and µMAX
guaranteed over the extended temperature range of
-40°C to +85°C.
19-2462; Rev 2; 3/05
µMax is a registered trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Mechanical Potentiometer Replacement
Products Using One-Time Factory Calibration
TOP VIEW
________________________________________________________________ Maxim Integrated Products
GND
GND
V
V
CS
CS
DD
W
DD
W
*EXPOSED PADDLE. CONNECTED TO GND.
One-Time Programmable, Linear-Taper
General Description
1
2
4
3
1
2
4
3
Pin Configurations
®
packages. Each device is
MAX5427
MAX5428
MAX5429
MAX5427
MAX5428
MAX5429
QFN
MAX
*
*
Applications
6
8
7
6
5
8
7
5
H
L
U/D
V
H
L
U/D
V
PP
PP
♦ Wiper Position Stored After One-Time Fuse
♦ User-Defined Power-On Reset Position
♦ 35ppm/°C End-to-End Temperature Coefficient
♦ 32 Tap Positions
♦ Tiny 8-Pin Thin QFN and µMAX Packages
♦ Ultra-Low 1.5µA (max) Static Supply Current
♦ 2.7V to 5.5V Single-Supply Operation
♦ Wiper Position Programmed Through Simple
♦ 10k , 50k , and 100k End-to-End Resistances
*EP = Exposed paddle.
Digital Potentiometers
MAX5427EUA
MAX5427ETA
MAX5428EUA
MAX5428ETA
MAX5429EUA
MAX5429ETA
GND
V
U/D
V
CS
DD
PP
Programming
and 5ppm/°C Ratiometric Temperature Coefficient
2-Wire Serial Interface
PART
3
4
2
6
5
MAX5427
MAX5428
MAX5429
Functional Block Diagram
UP/DOWN
ONE-TIME
PROGRAM
COUNTER
BLOCK
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
POSITION
DECODER
32-
PIN-PACKAGE
8 µMAX
8 Thin QFN-EP*
8 µMAX
8 Thin QFN-EP*
8 µMAX
8 Thin QFN-EP*
7
8
H
L
R
R
R
R
31
30
2
1
Features
S
S
S
S
S
S
32
31
30
3
2
1
R
W
R (k )
100
100
1
50
50
10
10
W
1
Datasheet pdf - http://www.DataSheet4U.net/
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