MAX5389 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer

19-5141; Rev 1; 4/10
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Dual, 256-Tap, Volatile, Low-Voltage
Linear Taper Digital Potentiometer
General Description
The MAX5389 dual, 256-tap, volatile, low-voltage lin-
ear taper digital potentiometer offers three end-to-end
resistance values of 10kI, 50kI, and 100kI. Operating
from a single +2.6V to +5.5V power supply, the device
provides a low 35ppm/NC end-to-end temperature coef-
ficient. The MAX5389 features an up/down interface.
The small package size, low supply operating voltage,
low supply current, and automotive temperature range
of the MAX5389 make the device uniquely suited for the
portable consumer market, battery backup industrial
applications, and the automotive market.
The MAX5389 is specified over the automotive -40NC to
+125NC temperature range and is available in a 14-pin
TSSOP package.
Applications
Audio Mixing
Mechanical Potentiometer Replacement
Low-Drift Programmable Filters and Amplifiers
Adjustable Voltage References/Linear Regulators
Programmable Delays and Time Constants
Automotive Electronics
Low-Voltage Battery Applications
Features
S Dual, 256-Tap Linear Taper Positions
S Single +2.6V to +5.5V Supply Operation
S Low (< 1µA) Quiescent Supply Current
S 10kI, 50kI, 100kI End-to-End Resistance Values
S Up/Down Interface
S Power-On Sets Wiper to Midscale
S -40°C to +125NC Operating Temperature Range
Ordering Information
PART
MAX5389LAUD+
MAX5389MAUD+
MAX5389NAUD+
PIN-PACKAGE
14 TSSOP
14 TSSOP
14 TSSOP
END-TO-END
RESISTANCE (kI)
10
50
100
Note: All devices are specified over the -40NC to +125NC oper-
ating temperature range
+Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram
VDD
HA WA LA
CSA
MAX5389
UDA
INCA
LATCH
256 DECODER
HB
CSB
U/D
WB
POR
UDB
INCB
LB
LATCH
256 DECODER
GND
________________________________________________________________ Maxim Integrated Products   1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.