Datasheet

MAX5427/MAX5428/MAX5429
One-Time Programmable, Linear-Taper
Digital Potentiometers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7V to 5.5V, V
PP
= GND, V
H
= V
DD
, V
L
= GND, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
=
5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND...........................................................-0.3V to +6.0V
V
PP
to GND..........................................................-0.3V to +12.0V
All Other Pins to GND.................................-0.3V to (V
DD
+ 0.3V)
Input and Output Latchup Immunity...............................±200mA
Maximum Continuous Current into H, L, and W
MAX5427 .................................................................±1.5mA
MAX5428 .................................................................±1.5mA
MAX5429 .................................................................±2.0mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
8-Pin QFN-EP (derate 24.4mW/°C above +70°C)......1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC PERFORMANCE
Resolution 32 Taps
MAX5427 75 100 125
MAX5428 37.5 50 62.5
End-to-End Resistance
MAX5429 7.5 10 12.5
kΩ
End-to-End Resistance Tempco TC
R
35 ppm/°C
MAX5427/MAX5428 5
Ratiometric Resistance Tempco
MAX5429 10
ppm/°C
Integral Nonlinearity INL
Potentiometer configuration, no load,
Figure 1
±1 LSB
Differential Nonlinearity DNL
Potentiometer configuration, no load,
Figure 1
±1 LSB
Full-Scale Error
Potentiometer configuration, no load,
Figure 1
-0.5 LSB
Zero-Scale Error
Potentiometer configuration, no load,
Figure 1
+0.5 LSB
Wiper Resistance R
W
MAX5427 I
W
= 20µA; MAX5428 I
W
= 40µA;
MAX5429 I
W
= 200µA
100 240 Ω
DIGITAL INPUTS (CS, U/D)
Input High Voltage V
IH
0.7 x
V
DD
V
Input Low Voltage V
IL
0.3 x
V
DD
V
Input Current I
IN
±0.1 ±1 µA
Input Capacitance C
IN
5pF
TIMING CHARACTERISTICS (Note 2)
U/D Mode to CS Setup t
CU
Figures 2, 3 50 ns
CS Hold to U/D Mode t
CI
Figures 2, 3 50 ns
U/D Step Hold to CS t
IC
Figures 2, 3 0 ns
U/D Step Low Time t
IL
Figures 2, 3 100 ns