Datasheet

MAX5422/MAX5423/MAX5424
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
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ELECTRICAL CHARACTERISTICS (continued)
(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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGITAL INPUTS (CS, DIN, SCLK)
V
DD
= 3.4V to 5.25V 2.4
Input High Voltage (Note 4) V
IH
V
DD
< 3.4V
0.7 x
V
DD
V
Input Low Voltage V
IL
V
DD
= 2.7V to 5.25V (Note 4) 0.8 V
Input Leakage Current I
IN
±0.1 ±1 µA
Input Capacitance C
IN
5pF
DYNAMIC CHARACTERISTICS
MAX5422 100
MAX5423 50
Wiper -3dB Bandwidth (Note 5)
MAX5424 25
kHz
NONVOLATILE MEMORY RELIABILITY
Data Retention T
A
= +85°C 50 Years
T
A
= +25°C 200,000
Endurance
T
A
= +85°C 50,000
Stores
POWER SUPPLY
Supply Voltage V
DD
2.70 5.25 V
Standby Current I
DD
Digital inputs = V
DD
or GND, T
A
= +25°C 0.5 1 µA
Programming Current I
PG
During nonvolatile write to memory; digital
inputs = V
DD
or GND (Note 6)
200 400 µA
TIMING 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. See Figure 1.) (Note 7)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG SECTION
MAX5422 400
MAX5423 600Wiper Settling Time (Note 8) t
S
MAX5424 1000
ns
DIGITAL SECTION
SCLK Frequency f
SCLK
5MHz
SCLK Clock Period t
CP
200 ns
SCLK Pulse-Width High t
CH
80 ns
SCLK Pulse-Width Low t
CL
80 ns
CS Fall to SCLK Rise Setup t
CSS
80 ns
SCLK Rise to CS Rise Hold t
CSH
0ns
DIN to SCLK Setup t
DS
50 ns