Datasheet

MAX5400/MAX5401
256-Tap SOT-PoT,
Low-Drift Digital Potentiometers in SOT23
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V, V
H
= V
DD
, V
L
= 0, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C, unless otherwise noted. Parameters are mea-
sured at T
A
= +25°C. Values over full temperature range are guaranteed by design.)
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.
V
DD
to GND............................................................. -0.3V to +6V
DIN, SCLK, CS to GND ............................................-0.3V to +6V
H, L, W to GND...........................................-0.3V to (V
DD
+ 0.3V)
Maximum Continuous Current into
Pins H, L, and W ...........................................................±1mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SOT23 (derate 8.7mW/°C above +70°C)...........697mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ..................................................…+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC PERFORMANCE (Voltage Divider Mode)
Resolution N 8 Bits
Integral Nonlinearity
(Notes 1, 2)
INL ±1/2 LSB
Differential Nonlinearity
(Notes 1, 2)
DNL ±1/2 LSB
End-to-End Resistor Tempco TC
R
50 ppm/°C
Ratiometric Resistor Tempco 5 ppm/°C
MAX5400 -0.8
Full-Scale Ratio Error
MAX5401 -0.4
LSB
MAX5400 +0.8
Zero-Scale Ratio Error
MAX5401 +0.4
LSB
POWER SUPPLIES
Supply Voltage V
DD
2.7 5.5 V
V
DD
= 5V 0.7 5 µA
Supply Current I
DD
CS = SCLK = DIN = V
DD
V
DD
= 2.7V 0.1 µA
DC PERFORMANCE (Variable Resistor Mode)
Resolution N 8 Bits
V
CC
= 5V ±1
MAX5400 ±1.5
Integral Nonlinearity
(Notes 1, 3)
INL
V
CC
= 3V
MAX5401 ±1
LSB
V
CC
= 5V ±1/2
Differential Nonlinearity
(Notes 1, 3)
DNL
V
CC
= 3V ±1/2
LSB
DC PERFORMANCE (Resistor Characteristics)
Wiper Resistance (Note 4) R
W
250 800 Ω
Wiper Capacitance C
W
25 pF
MAX5401 75 100 125
End-to-End Resistance R
HL
MAX5400 37.5 50 62.5
kΩ