Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometers
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.6V to +5.5V, V = V , V = GND, T = T
to T
, unless otherwise noted. Typical values are at V
= +5V, T
A
H_
DD L_
A
MIN
MAX
DD
= +25˚C. ) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Total Harmonic Distortion
Plus Noise
THD+N Measured at W, V = 1V
H_
at 1kHz
0.015
%
RMS
MAX5386L/MAX5388L
300
1000
2000
Wiper Settling Time (Note 6)
t
MAX5386M/MAX5388M
MAX5386N/MAX5388N
ns
S
POWER SUPPLIES
Supply Voltage Range
Standby Current
V
2.6
5.5
V
DD
Digital inputs = V
or GND
1
5
FA
DD
DIGITAL INPUTS
Minimum Input High Voltage
Maximum Input Low Voltage
Input Leakage Current
Input Capacitance
V
70
-1
%V
%V
IH
DD
V
30
+1
IL
DD
FA
pF
TIMING CHARACTERISTICS (Note 7)
Maximum SCLK Frequency
SCLK Clock Period
f
10
MHz
ns
MAX
t
100
40
40
40
0
CP
SCLK Pulse-Width High
SCLK Pulse-Width Low
t
ns
CH
t
ns
CL
t
ns
CS Fall to SCLK Rise Setup Time
SCLK Rise to CS Rise Hold Time
DIN Setup Time
CSS
CSH
t
ns
t
40
0
ns
DS
DIN Hold Time
t
ns
DH
t
10
ns
SCLK Rise to CS Fall Delay
CS0
SCLK Rise to SCLK Rise Hold
Time
t
40
ns
CS1
t
100
ns
CS Pulse-Width High
CSW
Note 1: All devices are 100% production tested at T = +25°C. Specifications over temperature limits are guaranteed by design
A
and characterization.
Note 2: DNL and INL are measured with the potentiometer configured as a voltage-divider (Figure 1) with H = V
and L = GND.
DD
The wiper terminal is unloaded and measured with an ideal voltmeter.
Note 3: R-DNL and R-INL are measured with the potentiometer configured as a variable resistor (Figure 1). DNL and INL are mea-
sured with the potentiometer configured as a variable resistor. H_ is unconnected and L_ = GND. For V = +5V, the wiper
DD
terminal is driven with a source current of 400µA for the 10kIconfiguration, 80µA for the 50kIconfiguration, and 40µA for
the 100kIconfiguration. For V = +2.6V, the wiper terminal is driven with a source current of 200µA for the 10kIconfigu-
DD
ration, 40µA for the 50kI configuration, and 20µA for the 100kI configuration.
Note 4: The wiper resistance is the worst value measured by injecting the currents given in Note 3 in to W with L = GND. R = (V
W
W
- V )/I .
H
W
Note 5: Drive HA with a 1kHz GND to V
amplitude tone. LA = LB = GND. No load. WB is at midscale with a 10pF load. Measure
DD
WB.
Note 6: The wiper-settling time is the worst case 0 to 50% rise time, measured between tap 0 and tap 127. H = V , L = GND, and
DD
the wiper terminal is loaded with 10pF capacitance to ground.
Note 7:
Digital timing is guaranteed by design and characterization, not production tested.
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3