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MAX5395 Datasheet

Low-Voltage Linear Taper Digital Potentiometer

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MAX5395
Single, 256-Tap Volatile, I2C, Low-Voltage Linear
Taper Digital Potentiometer
General Description
The MAX5395 single, 256-tap volatile, low-voltage
linear taper digital potentiometer offers three end-to-
end resistance values of 10kΩ, 50kΩ, and 100kΩ.
Potentiometer terminals are independent of supply for
voltages up to 5.25V with single-supply operation from
1.7V to 5.5V (charge pump enabled). User-controlled
shutdown modes allow the H, W, or L terminal to be
opened with the wiper position set to zero-code, mid-
code, full-code, or the value contained in the wiper
register. Ultra-low-quiescent supply current (< 1µA) can
be achieved for supply voltages between 2.6V and 5.5V
by disabling the internal charge pump and not allowing
potentiometer terminals to exceed the supply voltage by
more than 0.3V. The MAX5395 provides a low 50ppm/°C
end-to-end temperature coefficient and features an I2C
serial interface.
The small package size, low operating supply voltage,
low supply current, and automotive temperature range
of the MAX5395 make the device uniquely suited for the
portable consumer market and battery-backup industrial
applications.
The MAX5395 is available in a lead-free, 8-pin TDFN
(2mm x 2mm) package. The device operates over the
-40°C to +125°C automotive temperature range.
Ordering Information appears at end of data sheet.
Benefits and Features
● Single Linear Taper 256-Tap Positions
10kΩ, 50kΩ, and 100kΩ End-to-End Resistance
1.7V to 5.5V Extended Single Supply
0 to 5.25V H, W, L Operating Voltage Independent of VDD
1μA (typ) Supply Current in Low-Power Mode
±1.0 LSB INL, ±0.5 LSB DNL (max) Wiper Accuracy
Power-On Sets Wiper to Midscale
50ppm/°C End-to-End Temperature Coefficient
5ppm/°C Ratiometric Temperature Coefficient
-40°C to +125°C Operating Temperature Range
2mm x 2mm, 8-Pin TDFN Package
● I2C-Compatible Serial Interface
Applications
Portable Electronics
System Calibration
Battery-Powered Systems
Mechanical Potentiometer Replacement
Typical Operating Circuit
ADDR0
SDA
SCL
VDD 1.7V TO 5.5V
(CHARGE PUMP ENABLED) H
MAX5395
I2C
INTERFACE
W
+5V
VS
MAX4250
VO
GND
L R1
VO/ VS = 1 + RMAX5395/R1
19-6393; Rev 3; 2/16


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX5395 Datasheet

Low-Voltage Linear Taper Digital Potentiometer

No Preview Available !

MAX5395
Single, 256-Tap Volatile, I2C, Low-Voltage Linear
Taper Digital Potentiometer
Absolute Maximum Ratings
(All voltages referenced to GND.)
Maximum Current into Any Input........................................50mA
VDD .........................................................................-0.3V to +6V
H, W, L (charge pump enabled) ...........................-0.3V to +5.5V
Continuous Power Dissipation (TA = +70°C)
TDFN (derate 11.9mW/°C above +70°C)..................953.5mW
H, W, L (charge pump disabled).................. -0.3V to the lower of
Operating Temperature Range ........................ -40°C to +125°C
(VDD + 0.3V) or +6V
ADDR0...................... -0.3V to the lower of (VDD + 0.3V) or +6V
All Other Pins ..........................................................-0.3V to +6V
Storage Temperature Range............................ -65°C to + 150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s).................................+ 300°C
Continuous Current into H, W, and L
Soldering Temperature (reflow) ......................................+260°C
MAX5395L......................................................................... 5mA
MAX5395M........................................................................ 2mA
MAX5395N........................................................................1mA
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 (θJA)........83.9°C/W
Junction-to-Ambient Thermal Resistance (θJC)........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
(VDD = 1.7V to 5.5V, VH = VDD, VL = GND, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VDD = 1.8V,
TA = +25°C.) (Note 2)
PARAMETER
RESOLUTION
256-Tap Family
SYMBOL
N
CONDITIONS
MIN TYP MAX UNITS
256 Tap
DC PERFORMANCE (Voltage-Divider Mode)
Integral Nonlinearity (Note 3)
INL
-1.0 +1.0 LSB
Differential Nonlinearity
DNL (Note 3)
-0.5 +0.5 LSB
Ratiometric Resistor Tempco
(DVW/VW)/DT, VH = VDD, VL = GND, No
Load
5 ppm/°C
Full-Scale Error (Code FFh)
Charge pump enabled, 1.7V < VDD < 5.5V
Charge pump disabled,
2.6V < VDD < 5.5V
MAX5395M
MAX5395N
MAX5395L
-0.5
-0.5
-1.0
LSB
Zero-Scale Error (Code 00h)
Charge pump enabled, 1.7V < VDD < 5.5V
Charge pump disabled,
2.6V < VDD < 5.5V
MAX5395M
MAX5395N
MAX5395L
+0.5
+0.5
+1.0
LSB
DC PERFORMANCE (Variable Resistor Mode)
Integral Nonlinearity (Note 4)
R-INL
Charge pump enabled, 1.7V < VDD < 5.5V
Charge pump disabled,
2.6V < VDD < 5.5V
MAX5395M
MAX5395N
MAX5395L
-1.0
-1.0
-1.5
+1.0
+1.0
+1.5
LSB
Differential Nonlinearity
R-DNL (Note 4)
-0.5 +0.5 LSB
Wiper Resistance (Note 5)
RWL
Charge pump enabled, 1.7V < VDD < 5.5V
Charge pump disabled, 2.6V < VDD < 5.5V
25 50
200
www.maximintegrated.com
Maxim Integrated 2


Part Number MAX5395
Description Low-Voltage Linear Taper Digital Potentiometer
Maker Maxim
Total Page 17 Pages
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