Datasheet

MAX5402
256-Tap, µPoT, Low-Drift,
Digital Potentiometer
________________________________________________________________________________________ 3
Note 1: Linearity is defined in terms of the H-to-L code-dependent resistance.
Note 2: The DNL and INL are measured with the potentiometer configured as a voltage-divider with H = V
DD
and L = 0. The wiper
terminal is unloaded and measured with an ideal voltmeter.
Note 3: The DNL and INL are measured with the potentiometer configured as a variable resistor. H is unconnected and L = 0. The
wiper terminal is driven with a source current of 200µA at V
DD
= +3V and 400µA at V
DD
= +5V.
Note 4: The wiper resistance is the worst value measured, injecting a current, I
W
= V
DD
/R
HL
into terminal W.
Note 5: Digital timing is guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCLK Pulse Width Low t
CL
40 ns
CS Fall to SCLK Rise Setup Time t
CSS
40 ns
SCLK Rise to CS Rise Hold Time t
CSH
0ns
DIN Setup Time t
DS
40 ns
DIN Hold Time t
DH
0ns
SCLK Rise to CS Fall Delay t
CS0
10 ns
CS Rise to SCLK Rise Hold t
CS1
40 ns
CS Pulse Width High t
CSW
100 ns
POWER SUPPLIES
Supply Voltage V
DD
2.7 5.5 V
V
DD
= +5V 0.8 5 µA
Supply Current I
DD
CS = SCLK =
DIN = V
DD V
DD
= +2.7V 0.1 µA
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V, V
H
= V
DD
, V
L
= 0, T
A
= T
MIN
to T
MAX
. Typical values are at V
DD
= +5V, T
A
= +25°C, unless otherwise noted.)