Document
19-5035; Rev 0; 10/09
TION KIT EVALUA BLE IL AVA A
Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers
Features
S Dual 256-Tap Linear Taper Positions S Single +1.7V to +5.5V Supply Operation S Low 12µA Quiescent Supply Current S 10kI, 50kI, and 100kI End-to-End Resistance
General Description
The MAX5391/MAX5393 dual 256-tap, volatile, lowvoltage linear taper digital potentiometers offer three end-to-end resistance values of 10kI, 50kI, and 100kI. Operating from a single +1.7V to +5.5V power supply, these devices provide a low 35ppm/NC end-to-end temperature coefficient. The devices feature an SPIK interface. The small package size, low supply voltage, low supply current, and automotive temperature range of the MAX5391/MAX5393 make the devices uniquely suitable for the portable consumer market, battery backup industrial applications, and the automotive market. The MAX5391/MAX5393 include two digital potentiometers in a voltage-divider configuration. The MAX5391/ MAX5393 are specified over the -40NC to +125NC automotive temperature range and are available in a 16-pin, 3mm x 3mm TQFN and a 14-pin TSSOP package, respectively.
MAX5391/MAX5393
Values
S SPI-Compatible Interface S Wiper Set to Midscale on Power-Up S -40NC to +125NC Operating Temperature Range
Ordering Information
PART MAX5391LATE+ MAX5391MATE+ MAX5391NATE+ MAX5393LAUD+ MAX5393MAUD+ MAX5393NAUD+ PIN-PACKAGE 16 TQFN-EP* 16 TQFN-EP* 16 TQFN-EP* 14 TSSOP 14 TSSOP 14 TSSOP END-TO-END RESISTANCE (kI) 10 50 100 10 50 100
Applications
Low-Voltage Battery Applications Portable Electronics Mechanical Potentiometer Replacement Offset and Gain Control
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Note: All devices are specified in the -40NC to +125NC temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package *EP = Exposed pad.
Adjustable Voltage References/Linear Regulators Automotive Electronics
Functional Diagram
VDD CHARGE PUMP CS SCLK DIN BYP HA WA LA
LATCH SPI POR LATCH
256 DECODER HB
MAX5391 MAX5393
256 DECODER
WB LB
GND
SPI is a trademark of Motorola, Inc.
________________________________________________________________ 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.
Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers MAX5391/MAX5393
ABSOLUTE MAXIMUM RATINGS
VDD to GND ............................................................-0.3V to +6V H_, W_, L_ to GND.......................................-0.3V to the lower of (VDD + 0.3V) or +6V All Other Pins to GND..............................................-0.3V to +6V Continuous Current into H_, W_, and L_ MAX5391L/MAX5393L. ................................................... Q5mA MAX5391M/MAX5393M. ................................................. Q2mA MAX5391N/MAX5393N.................................................. Q1mA Continuous Power Dissipation (TA = +70NC) 14.