Storage Temperature Range .............................-65ºC
to +150ºC
Lead Temperature (soldering, 10s) .................................
+300ºC
Soldering Temperature (reflow) .......................................
+260ºC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(V
DD
= +2.6V to +5.5V, V
H_
= V
DD
, V
L_
= GND, T
A
= -40ºC to +125ºC, unless otherwise noted. Typical values are at V
DD
= +5V,
T
A
= +25ºC.) (Note 1)
PARAMETER
Resolution
Integral Nonlinearity
Differential Nonlinearity
Dual Code Matching
Ratiometric Resistor Tempco
Full-Scale Error
SYMBOL
N
INL
DNL
(Note 2)
(Note 2)
Register A = register B
(ΔV
W
/Δ
W
)/ΔT; no load
Code = FFH
MAX5387L
MAX5387M
MAX5387N
MAX5387L
Zero-Scale Error
DC PERFORMANCE (Variable-Resistor Mode)
MAX5387L
V
DD
> +2.6V
Integral Nonlinearity
R-INL
V
DD
> +4.75V
Differential Nonlinearity
Wiper Resistance (Note 4)
Terminal Capacitance
Wiper Capacitance
End-to-End Resistor Tempco
End-to-End Resistor Tolerance
R-DNL
R
WL
C
H_
, C
L_
C
W_
TC
R
MAX5387M
MAX5387N
MAX5387L
MAX5387M
MAX5387N
-0.5
250
150
10
50
35
-25
+25
±1.0
±0.5
±0.25
±0.4
±0.3
±0.25
±2.5
±1.0
±0.8
±1.5
±0.75
±0.5
+0.5
600
200
LSB
Ω
pF
pF
ppm/ºC
%
LSB
Code = 00H
MAX5387M
MAX5387N
CONDITIONS
MIN
256
-0.5
-0.5
-0.5
+5
-3
-1
-0.5
-2.5
-0.5
-0.25
+2.5
+0.5
+0.25
+3
+1.0
+0.5
LSB
LSB
+0.5
+0.5
+0.5
TYP
MAX
UNITS
Tap
LSB
LSB
LSB
LSB
DC PERFORMANCE (Voltage-Divider Mode)
DC PERFORMANCE (Resistor Characteristics)
V
DD
> 2.6V (Note 3)
V
DD
> 2.6V
V
DD
> 4.75V
Measured to GND
Measured to GND
No load
Wiper not connected
ΔR
HL
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Maxim Integrated
│
2
MAX5387
Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometer
Electrical Characteristics (continued)
(V
DD
= +2.6V to +5.5V, V
H_
= V
DD
, V
L_
= GND, T
A
= -40ºC to +125ºC, unless otherwise noted. Typical values are at V
DD
= +5V,
T
A
= +25ºC.) (Note 1)
PARAMETER
AC PERFORMANCE
Crosstalk
-3dB Bandwidth
Total Harmonic Distortion Plus
Noise
Wiper Settling Time (Note 6)
POWER SUPPLIES
Supply-Voltage Range
Standby Current
DIGITAL INPUTS
Minimum Input High Voltage
Maximum Input Low Voltage
Input Leakage Current
Input Capacitance
TIMING CHARACTERISTICS (Notes 7, 8)
Maximum SCL Frequency
Setup Time for START Condition
Hold Time for START Condition
SCL High Time
SCL Low Time
Data Setup Time
Data Hold Time
SDA, SCL Rise Time
SDA, SCL Fall
Setup Time for STOP Condition
Bus Free Time Between STOP and
START Conditions
Pulse-Suppressed Spike Width
Capacitive Load for Each Bus
t
SU:STA
t
HIGH
t
LOW
f
SCL
400
0.6
0.6
0.6
1.3
100
0
0.3
0.3
0.6
Minimum power-up rate = 0.2V/µs
1.3
50
400
kHz
µs
µs
µs
µs
ns
µs
µs
µs
µs
µs
ns
pF
V
IH
V
IL
V
DD
2.6
Digital inputs = V
DD
or GND
70
30
-1
5
+1
1
5.5
V
µA
% x V
DD
% x V
DD
µA
pF
BW
THD+N
t
S
(Note 5)
Code = 80H,
10pF load,
V
DD
= +2.6V
MAX5387L
MAX5387M
MAX5387N
-90
600
150
75
0.015
300
1000
2000
ns
%
kHz
dB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Measured at W; V
H_
= 1V
RMS
at 1kHz
MAX5387L
MAX5387M
MAX5387N
t
HD:STA
t
HD:DAT
t
R
t
F
t
SU:DAT
t
SU:STO
t
BUF
t
SP
C
B
Note 1:
All devices are 100% production tested at T
A
= +25ºC. Specifications overtemperature limits are guaranteed by design and
characterization.
Note 2:
DNL and INL are measured with the potentiometer configured as a voltage-divider (Figure 1) with H_ = V
DD
and L_ = 0V.
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
DD
= +5V, the wiper
terminal is driven with a source current of 400µA for the 10kΩ configuration, 80µA for the 50kΩ configuration, and 40µA for
the 100kΩ configuration. For V
DD
= +2.6V, the wiper terminal is driven with a source current of 200µA for the 10kΩ configu-
ration, 40µA for the 50kΩ configuration, and 20µA for the 100kΩ configuration.
Note 4:
The wiper resistance is the worst value measured by injecting the currents given in Note 3 into W_ with L_ = GND. R
W
=
(V
W
- V
H
)/I
W
.
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Maxim Integrated
│
3
MAX5387
Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometer
Electrical Characteristics (continued)
Note 5:
Drive HA with a 1kHz GND to V
DD
amplitude tone. LA = LB = GND. No load. WB is at midscale with a 10pF load. Measure 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
DD
, L_ = GND,
and the wiper terminal is loaded with 10pF capacitance to ground.
Note 7:
Digital timing is guaranteed by design and characterization, not production tested.
Note 8:
The SCL clock period includes rise and fall times (t
R
= t
F
). All digital input signals are specified with t
R
= t
F
= 2ns and timed
from a voltage level of (V
IL
+ V
IH
)/2.
H
N.C.
W
W
L
L
Figure 1. Voltage-Divider and Variable Resistor Configurations
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