Datasheet

MAX5403/MAX5404/MAX5405
Dual 256-Tap, Low-Drift,
Digital Potentiometers in 10-µMAX
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V, unless otherwise noted. 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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX5403 7.5 10 12.5
MAX5404 37.5 50 62.5End-to-End Resistance R
HL
MAX5405 75 100 125
kΩ
DIGITAL INPUTS
Input High Voltage V
IH
0.7
✕
V
DD
V
Input Low Voltage V
IL
0.3
✕
V
DD
V
Input Leakage Current ±1.0 µA
Input Capacitance 5pF
TIMING CHARACTERISTICS (ANALOG)
MAX5403 100
MAX5404 325Wiper-Settling Time t
S
MAX5405 650
ns
TIMING CHARACTERISTICS (DIGITAL) (Note 5)
Maximum SCLK Frequency 10 MHz
SCLK Clock Period t
CP
100 ns
SCLK Pulse Width High t
CH
40 ns
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
Note 1: Linearity is defined in terms of the H
X
to L
X
code-dependent resistance.
Note 2: The DNL and INL are measured with the potentiometer configured as a voltage divider with H
X
= V
DD
and L
X
= 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. For the 3-terminal potentiometer
(Pot A), H
A
is unconnected and L
A
= 0. For the 2-terminal potentiometer (Pot B), only L
B
= 0. At V
DD
= +5V, the wiper termi-
nal is driven with a source current of 400µA for the 10kΩ configuration, 80µA for the 50kΩ configuration, and 40µA for the
100kΩ configuration. At V
DD
= +3V, 200µA/40µA/20µA for 10kΩ/50kΩ/100kΩ configuration respectively.
Note 4: The wiper resistance is the worst value measured by injecting into W
X
, a current I
W
= V
DD
/ R
HL
.
Note 5: Digital timing is guaranteed by design.