DS3904 - Dallas Semiconducotr

DS3904 Triple 128-Position Nonvolatile Digital Variable Resistor/Switch

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 communic.

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 +85°C -40°C to +85°C PINPACKAGE 8 µSOP 10 µSOP RESISTANCE 20kΩ + Hi-Z 20kΩ + Hi-Z Applications Power-Supply Calibration Cell Phones and PDAs Fibre Optic Transceiver.