Datasheet

(V
DD
= 1.7V to 5.5V, V
H
= V
DD
, V
L
= GND, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
DD
= 1.8V,
T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Differential Nonlinearity R-DNL (Note 4) -0.5 +0.5 LSB
Wiper Resistance (Note 5) R
WL
Charge pump enabled, 1.7V < V
DD
< 5.5V 25 50
Ω
Charge pump disabled, 2.6V < V
DD
< 5.5V 200
DC PERFORMANCE (RESISTOR CHARACTERISTICS)
Terminal Capacitance C
H
, C
L
Measured to GND 10 pF
Wiper Capacitance C
W
Measured to GND 20 pF
End-to-End Resistor Tempco T
CR
No load 50 ppm/°C
End-to-End Resistor
Tolerance
Wiper not connected -25 +25 %
AC PERFORMANCE
-3dB Bandwidth BW
Code = 80h, 10pF load,
V
DD
= 1.8V
10kΩ 1600
kHz50kΩ 340
100kΩ 165
Total Harmonic Distortion
Plus Noise
THD+N (Note 6) 0.035 %
Wiper Settling Time t
S
(Note 7)
10kΩ 190
ns50kΩ 400
100kΩ 664
Charge-Pump Feedthrough
at W
V
RW
600 nV
RMS
POWER SUPPLIES
Supply Voltage Range V
DD
1.7 5.5 V
Terminal Voltage Range
(H, W, L to GND)
Charge pump enabled, 1.7V < V
DD
< 5.5V 0 5.25
V
Charge pump disabled, 2.6V < V
DD
< 5.5V 0 V
DD
Supply Current (Note 8) I
VDD
Charge pump disabled, 2.6V < V
DD
< 5.5V 1
µA
Charge pump enabled,
1.7V < V
DD
< 5.5V
V
DD
= 5.5V 25
V
DD
= 1.7V 20
DIGITAL INPUTS
Minimum Input High Voltage V
IH
2.6V < V
DD
< 5.5V 70
% x V
DD
1.7V < V
DD
< 2.6V 80
Maximum Input Low Voltage V
IL
2.6V < V
DD
< 5.5V 30
% x V
DD
1.7V < V
DD
< 2.6V 20
Input Leakage Current -1 +1 µA
Input Capacitance 5 pF
MAX5394 Single, 256-Tap Volatile, SPI, Low-Voltage Linear
Taper Digital Potentiometer
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)