Datasheet

MAX5487/MAX5488/MAX5489
Dual, 256-Tap, Nonvolatile, SPI-Interface,
Linear-Taper Digital Potentiometers
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DC ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.25V, 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
DIGITAL INPUTS
V
DD
= 3.6V to 5.25V 2.4
Input High Voltage (Note 5) V
IH
V
DD
= 2.7V to 3.6V
0.7 x
V
DD
V
Input Low Voltage V
IL
V
DD
= 2.7V to 5.25V (Note 5) 0.8 V
Input Leakage Current I
IN
±1.0 µA
Input Capacitance C
IN
5.0 pF
AC PERFORMANCE
Crosstalk
f
H_
= 1kHz, L_ = GND, measurement at W_
(Note 6)
-90 dB
MAX5487 350
MAX5488 90-3dB Bandwidth BW
Wiper at midscale
C
W_
= 10pF
MAX5489 45
kHz
Total Harmonic Distortion THD
V
H_
= 1V
RMS
at 1kHz, L_ = GND,
measurement at W_
0.02 %
TIMING CHARACTERISTICS (Analog)
MAX5487 0.5
MAX5488 0.75Wiper-Settling Time t
S
Code 0 to 127
(Note 7)
MAX5489 1.5
µs
TIMING CHARACTERISTICS (Digital, Figure 2, Note 8)
SCLK Frequency 5 MHz
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
DIN Hold after SCLK t
DH
0ns
SCLK Rise to CS Fall Delay t
CS0
20 ns
CS Rise to SCLK Rise Hold t
CS1
80 ns
CS Pulse-Width High t
CSW
200 ns
Write NV Register Busy Time t
BUSY
12 ms
Read NV Register Access Time t
ACC
1µs
W r i te W i p er Reg i ster to O utp ut D el ay t
WO
1µs
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