Datasheet

MAX5487/MAX5488/MAX5489
Dual, 256-Tap, Nonvolatile, SPI-Interface,
Linear-Taper Digital Potentiometers
_______________________________________________________________________________________ 5
0.1
0
-40-20 0204060 80
0.5
0.4
0.3
0.2
0.6
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
SUPPLY CURRENT
vs. TEMPERATURE
MAX5487-89 toc01
V
DD
= 3V
V
DD
= 5V
SUPPLY CURRENT
vs. DIGITAL INPUT VOLTAGE
MAX5487-89 toc02
DIGITAL INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
4321
1
10
100
1000
10,000
0
05
V
CC
= 5V
V
CC
= 3V
0
50
150
100
200
250
0649632 128 160 192 224 256
WIPER RESISTANCE
vs. TAP POSITION
MAX5487-89 toc03
TAP POSITION
WIPER RESISTANCE (Ω)
1µs/div
TAP-TO-TAP SWITCHING TRANSIENT
(MAX5487)
CS
2.0V/div
WIPER
20mV/div
MAX5487-89 toc04
V
H_
= 5.0V
TAP-TO-TAP SWITCHING TRANSIENT
(MAX5488)
MAX5487-89 toc05
1.0
µ
s/div
WIPER
20mV/div
V
H_
= 5.0V
CS
2.0V/div
WIPER TRANSIENT AT POWER-ON
MAX5487-89 toc07
2.0µs/div
WIPER
2.0V/div
V
H_
= V
DD
V
DD
2.0V/div
FREQUENCY (kHz)
GAIN (dB)
MIDSCALE FREQUENCY RESPONSE
(MAX5487)
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
0.1 1 10 100 1000
MAX5487-89 toc08
C
W
= 10pF
C
W_
= 50pF
TAP-TO-TAP SWITCHING TRANSIENT
(MAX5489)
MAX5487-89 toc06
1.0
µ
s/div
WIPER
20mV/div
V
H_
= 5.0V
CS
2.0V/div
Typical Operating Characteristics
(V
DD
= +5.0V, T
A
= +25°C, unless otherwise noted.)