The DS3906 is intended for low resistance, small stepsize
applications. It contains three nonvolatile (NV), low-temperature
coefficient, variable digital resistors that
are capable of ohm and subohm increments when
used in parallel with a fixed external resistor. All three of
the DS3906's resistors have 64 positions (plus a high-Z
state) with a pseudo-log response cleverly chosen to
have a linear equivalent resistance when paired with an
external resistor (see graphs below). The DS3906 also
contains 16 bytes of user EEPROM that, in addition to
the resistors, are controlled through an I²C*-compatible
serial interface. Three address pins allow up to
eight DS3906s to be placed on the same I²C bus.
The DS3906 can also be factory cutomized to provide a
variety of transfer functions depending on user
requirements. Contact for additional information.
Key Features
Applications/Uses
Three Programmable Resistors for Low Step-Size Applications (Ohm and Subohm)
Resistor Settings are NV
16-Byte NV User Memory (EEPROM)
I²C-Compatible Serial Interface
Up to 8 Devices Can be Multidropped on the Same I²C Bus
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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