Datasheet

MAX5427/MAX5428/MAX5429
One-Time Programmable, Linear-Taper
Digital Potentiometers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(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)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
U/D Step High Time t
IH
Figures 2, 3 100 ns
Wiper Switching Time t
IW
C
L
= 0pF, Figures 2, 3 100 ns
V
PP
Rising Edge to CS Falling
Edge
t
PC
Figure 4 1 ms
CS Falling Edge to V
PP
Falling
Edge
t
CP
Figure 4 5 ms
CS Step Low Time t
CL
Figure 4 5 ms
CS Step High Time t
CH
Figure 4 5 ms
V
PP
Falling Edge to CS Rising
Edge
t
PH
Figure 4 1 ms
U/D Frequency f
U/DMAX
5 MHz
Power-Up Time t
UP
(Note 3) 1 ms
100kΩ variable resistor configuration,
C
L
= 10pF, Figure 1
1
Output Settling Time t
SETTLE
100kΩ potentiometer configuration,
C
L
= 10pF, Figure 1
0.25
µs
POWER SUPPLY
Supply Voltage V
DD
2.7 5.5 V
Static Supply Current I
DD
(Note 4) 1.5 µA
T
A
< +50°C 10.45 11.55
Programming Voltage V
PP
T
A
≥ +50°C 11 11.55
V
Programming Current I
PP
V
PP
= 11V 5 mA
Note 1: All devices are production tested at T
A
= +25°C and are guaranteed by design for T
A
= -40°C to +85°C.
Note 2: Digital timing is guaranteed by design, not production tested.
Note 3: Power-up time is the period of time from when the power supply is applied until the serial interface is ready for writing.
Note 4: Digital inputs CS and U/D are connected to GND or V
DD
.
H
L
W
POTENTIOMETER
CONFIGURATION
VARIABLE-RESISTOR
CONFIGURATION
H
L
Figure 1. Potentiometer/Variable-Resistor Configuration