Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
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.
Package Thermal Characteristics
(Note 1)
TDFN
Junction-to-Ambient Thermal Resistance (θ
JA
) .......83.9°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ............37.0°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(V
DD
= 1.7V to 5.5V, V
H
= V
DD
, V
L
= GND, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
DD
= 1.8V,
T
A
= +25°C.) (Note 2)
PARAMETER
RESOLUTION
256-Tap Family
Integral Nonlinearity (Note 3)
Differential Nonlinearity
Ratiometric Resistor Tempco
N
INL
DNL
(Note 3)
(DV
W
/V
W
)/DT, V
H
= V
DD
, V
L
= GND, no load
Charge pump enabled, 1.7V < V
DD
< 5.5V
Full-Scale Error (Code FFh)
Charge pump disabled,
2.6V < V
DD
< 5.5VS
MAX5394M
MAX5394N
MAX5394L
MAX5394M
MAX5394N
MAX5394L
-1.0
-1.0
-1.5
-0.5
-0.5
-1.0
+0.5
+0.5
+1.0
+1.0
+1.0
+1.5
LSB
LSB
LSB
256
-1.0
-0.5
5
+1.0
+0.5
Tap
LSB
LSB
ppm/°C
DC PERFORMANCE (VOLTAGE-DIVIDER MODE)
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Charge pump enabled, 1.7V < V
DD
< 5.5V
Zero-Scale Error (Code 00h)
Charge pump disabled,
2.6V < V
DD
< 5.5V
DC PERFORMANCE (VARIABLE RESISTOR MODE)
Charge pump enabled, 1.7V < V
DD
< 5.5V
Integral Nonlinearity (Note 4)
R-INL
Charge pump disabled,
2.6V < V
DD
< 5.5V
MAX5394M
MAX5394N
MAX5394L
www.maximintegrated.com
Maxim Integrated │
2
MAX5394
Single, 256-Tap Volatile, SPI, Low-Voltage Linear
Taper Digital Potentiometer
Electrical Characteristics (continued)
(V
DD
= 1.7V to 5.5V, V
H
= V
DD
, V
L
= GND, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
DD
= 1.8V,
T
A
= +25°C.) (Note 2)
PARAMETER
Differential Nonlinearity
Wiper Resistance (Note 5)
SYMBOL
R-DNL
R
WL
(Note 4)
Charge pump enabled, 1.7V < V
DD
< 5.5V
Charge pump disabled, 2.6V < V
DD
< 5.5V
Measured to GND
Measured to GND
No load
Wiper not connected
-25
10
20
50
+25
CONDITIONS
MIN
-0.5
25
TYP
MAX
+0.5
50
200
UNITS
LSB
Ω
DC PERFORMANCE (RESISTOR
CHARACTERISTICS)
Terminal Capacitance
Wiper Capacitance
End-to-End Resistor Tempco
End-to-End Resistor
Tolerance
AC PERFORMANCE
-3dB Bandwidth
Total Harmonic Distortion
Plus Noise
Wiper Settling Time
Charge-Pump Feedthrough
at W
POWER SUPPLIES
Supply Voltage Range
Terminal Voltage Range
(H, W, L to GND)
V
DD
Charge pump enabled, 1.7V < V
DD
< 5.5V
Charge pump disabled, 2.6V < V
DD
< 5.5V
Charge pump disabled, 1.7V
Charge pump disabled, 2.5V
Supply Current (Note 8)
I
VDD
Charge pump disabled, 5.5V
Charge pump enabled,
1.7V < V
DD
< 5.5V
DIGITAL INPUTS
Minimum Input High Voltage
Maximum Input Low Voltage
Input Leakage Current
Input Capacitance
V
IH
V
IL
2.6V < V
DD
< 5.5V
1.7V < V
DD
< 2.6V
2.6V < V
DD
< 5.5V
1.7V < V
DD
< 2.6V
-1
5
70
80
30
20
+1
% x V
DD
% x V
DD
µA
pF
V
DD
= 5.5V
V
DD
= 1.7V
1.7
0
0
0.3
0.4
1.0
25
20
5.5
5.25
V
DD
1.4
1.7
4.0
50
45
µA
V
V
BW
Code = 80h, 10pF load,
V
DD
= 1.8V
(Note 6)
10kΩ
t
S
(Note 7)
50kΩ
100kΩ
V
RW
10kΩ
50kΩ
100kΩ
1600
340
165
0.035
190
400
664
600
nV
RMS
ns
%
kHz
C
H
, C
L
C
W
T
CR
pF
pF
ppm/°C
%
THD+N
www.maximintegrated.com
Maxim Integrated │
3
MAX5394
Single, 256-Tap Volatile, SPI, Low-Voltage Linear
Taper Digital Potentiometer
Electrical Characteristics (continued)
(V
DD
= 1.7V to 5.5V, V
H
= V
DD
, V
L
= GND, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
DD
= 1.8V,
T
A
= +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
2.6V < V
DD
< 5.5V
1.7V < V
DD
< 2.6V
2.6V < V
DD
< 5.5V
1.7V < V
DD
< 2.6V
20
40
8
8
To 1st SCLK falling
edge (FE)
2.6V < V
DD
< 5.5V
1.7V < V
DD
< 2.6V
8
16
0
0
2.6V < V
DD
< 5.5V
1.7V < V
DD
< 2.6V
12
16
100
20
5
4.5
20
MIN
TYP
MAX
50
25
UNITS
TIMING CHARACTERISTICS (Note 9)
SCLK Frequency
SCLK Period
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS
Fall to SCLK Fall Setup
Time
CS
Fall to SCLK Fall Hold
Time
CS
Rise to SCLK Fall Hold
Time
CS
Rise to SCLK Fall
SCLK Fall to
CS
Fall
CS
Pulse-Width High
DIN to SCLK Fall Setup Time
DIN to SCLK Fall Hold Time
CS
Pulse-Width High
f
SCLK
t
SCLK
t
CH
t
CL
t
CSS0
t
CSH0
t
CSH1
t
CSA
t
CSF
t
CSPW
t
DS
t
DH
t
CSPW
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Applies to inactive FE preceding 1st FE
Applies to 16th FE
Applies to 16th FE,
aborted sequence
Applies to 16th FE
Note 2:
All devices are production tested at T
A
= +25°C and are guaranteed by design and characterization for T
A
= -40°C to
+125°C.
Note 3:
DNL and INL are measured with the potentiometer configured as a voltage-divider with V
H
= 5.25 (QP enabled) or V
DD
(QP disabled) and V
L
= GND. The wiper terminal is unloaded and measured with an ideal voltmeter.
Note 4:
R-DNL and R-INL are measured with the potentiometer configured as a variable resistor (Figure
1).
H is unconnected and
L = GND.
For charge pump enabled, V
DD
= 1.7V to 5.5V, 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 charge pump disabled and V
DD
= 5.5V, 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 charge pump disabled and V
DD
= +2.6V, the wiper terminal is driven with a source current of 200μA for the 10kΩ
configuration, 40μA for the 50kΩ configuration, and 20μA for the 100kΩ configuration.
Note 5:
The wiper resistance is the maximum value measured by injecting the currents given in Note 4 into W with L = GND.
R
W
= (V
W
- V
H
)/I
W
.
Note 6:
Measured at W with H driven with a 1kHz, 0V to V
DD
amplitude tone and V
L
= GND. Wiper at midscale with a 10pF load.
Note 7:
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 8:
Digital inputs at V
DD
or GND.
Note 9:
Digital timing is guaranteed by design and characterization, and is not production tested.
www.maximintegrated.com
Maxim Integrated │
4
MAX5394
Single, 256-Tap Volatile, SPI, Low-Voltage Linear
Taper Digital Potentiometer
H
N.C.
W
W
L
L
Figure 1. Voltage-Divider and Variable Resistor Configurations
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