Datasheet

MAX5422/MAX5423/MAX5424
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +5.25V, H = V
DD
, L = GND, T
A
= -40°C to +85°C. Typical values are at V
DD
= +5.0V, T
A
= +25°C, unless otherwise noted.)
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
All Other Pins to GND.................................-0.3V to (V
DD
+ 0.3V)
Maximum Continuous Current into H, L, and W
MAX5422......................................................................±1.3mA
MAX5423......................................................................±0.6mA
MAX5424......................................................................±0.3mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC PERFORMANCE (VOLTAGE-DIVIDER MODE)
Resolution N 256 Taps
Integral Nonlinearity INL (Note 1) ±0.5 LSB
Differential Nonlinearity DNL (Note 1) ±0.5 LSB
End-to-End Resistance
Temperature Coefficient
TC
R
35 ppm/°C
Ratiometric Resistance
Temperature Coefficient
5 ppm/°C
MAX5422 -0.6
MAX5423 -0.3Full-Scale Error
MAX5424 -0.15
LSB
MAX5422 0.7
MAX5423 0.35
Zero-Scale Error
MAX5424 0.18
LSB
DC PERFORMANCE (VARIABLE-RESISTOR MODE)
V
DD
= 3V ±3.0
Integral Nonlinearity
(Note 2)
INL
V
DD
= 5V ±1.5
LSB
V
DD
= 3V, MAX5422, -40°C ≤ T
A
≤ +85°C,
guaranteed monotonic
-1.0 +2.0
V
DD
= 3V, MAX5422, 0°C ≤ T
A
≤ +85°C,
guaranteed monotonic
-1.0 +1.2
V
DD
= 3V, MAX5423 ±1.0
V
DD
= 3V, MAX5424 ±1.0
Differential Nonlinearity
(Note 2)
DNL
V
DD
= 5V ±1.0
LSB
DC PERFORMANCE (RESISTOR CHARACTERISTICS)
Wiper Resistance R
W
V
DD
= 3V to 5.25V (Note 3) 325 675 Ω
Wiper Capacitance C
W
10 pF
MAX5422 37.5 50 62.5
MAX5423 75 100 125End-to-End Resistance
MAX5424 150 200 250
kΩ