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DS3904 - Triple 128-Position Nonvolatile Digital Variable Resistor/Switch

General Description

The DS3904/DS3905 contain three nonvolatile (NV) low temperature coefficient, variable digital resistors.

Each resistor has 128 user-selectable positions.

Additionally, the DS3904/DS3905 have a high-impedance setting that allows each resistor to function as a digital switch.

Key Features

  • Three 20kΩ, 128-Position Linear Digital Resistors.
  • Resistor Settings are Stored in NV Memory.
  • Each Resistor has a High-Impedance Setting for Switch Operation to Control Digital Logic.
  • Low Temperature Coefficient.
  • 2-Wire Serial Interface.
  • 2.7V to 5.5V Operating Range.
  • -40°C to +85°C Industrial Temperature.
  • Packaging: 8-Pin µSOP for DS3904, 10-pin µSOP for DS3905 DS3904/DS3905 Ordering Information PART TEMP RANGE -40°C to +.

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Datasheet Details

Part number DS3904
Manufacturer Dallas Semiconducotr
File Size 196.92 KB
Description Triple 128-Position Nonvolatile Digital Variable Resistor/Switch
Datasheet download datasheet DS3904 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Rev 1; 8/03 Triple 128-Position Nonvolatile Digital Variable Resistor/Switch General Description The DS3904/DS3905 contain three nonvolatile (NV) low temperature coefficient, variable digital resistors. Each resistor has 128 user-selectable positions. Additionally, the DS3904/DS3905 have a high-impedance setting that allows each resistor to function as a digital switch. The DS3904/DS3905 can operate over a 2.7V to 5.5V supply voltage range, and communication with the device is achieved through a 2-wire serial interface. Address pins allow multiple DS3904/DS3905s to operate on the same two-wire bus. The DS3904 has one address pin, allowing two DS3904s to share the bus, while the DS3905 has three address pins, allowing up to eight DS3905s to share a common bus.