MAX5395 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – Single, 256-Tap Volatile, I2C, Low-Voltage Linear Taper Digital Potentiometer

19-6393; Rev 0; 7/12
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, battery-backup industrial
applications, and automotive market.
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.
Features
S Single Linear Taper 256-Tap Positions
S 10kI, 50kI, and 100kI End-to-End Resistance
S 1.7V to 5.5V Extended Single Supply
S 0 to 5.25V H, W, L Operating Voltage Independent
of V_DD
S 1µA (typ) Supply Current in Low-Power Mode
S ±1.0 LSB INL, ±0.5 LSB DNL (max) Wiper Accuracy
S Power-On Sets Wiper to Midscale
S 50ppm/NC End-to-End Temperature Coefficient
S 5ppm/NC Ratiometric Temperature Coefficient
S -40NC to +125NC Operating Temperature Range
S 2mm x 2mm, 8-Pin TDFN Package
S I²C-Compatible Serial Interface
Applications
Portable Electronics
System Calibration
Battery-Powered Systems
Automotive Electronics
Mechanical Potentiometer Replacement
Typical Operating Circuit
ADDR0
SDA
SCL
VDD
1.7V TO 5.5V
(CHARGE PUMP ENABLED) H
MAX5395
I²C
W
INTERFACE
+5V
V_S
VO
MAX4250
GND
L
R1
V_O/ V_S = 1 + R_MAX5395/R₁
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX5395.related
For pricing, delivery, and ordering information, please contact Maxim Direct
1
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.