DS1841 Datasheet PDF | Maxim Integrated

Maxim Integrated DS1841

The DS1841 is a 7-bit, logarithmic, nonvolatile (NV) digital resistor that features an on-chip temperature sensor and associated analog-to-digital converter (ADC). The integrated temperature sensor indexes a 72-byte NV lookup table (LUT) encompassing a temperature range from -40°C to +100°C. The LUT output can drive the resistor directly or be added to an NV initial-value register (IVR) to drive the resistor.

Part No.	DS1841
Datasheet	DS1841 Download
Manufacturer	Maxim Integrated
Description	Temperature-Controlled
Buy	Stock & Price

GENERAL DESCRIPTION

FEATURES

♦ 22kΩ to 3.7kΩ Adjustable Logarithmic Resistor with a 3.6kΩ Fixed Resistor ♦ 128 Wiper Tap Points ♦ On-Chip Temperature Sensor and ADC ♦ 72-Byte Lookup Table (LUT) ♦ I2C-Compatible Serial Interface ♦ Address Pins Allow Up to Four DS1841s to Share the Same I2C Bus ♦ Digital Supply of 2.7V to 5.5V ♦ -40°C to +100°C Operating Range ♦ 3mm x 3mm, 10-Pin TDFN Package DS1841 This flexible LUT-based architecture allows the DS1841 to provide a temperature-compensated resistor output with arbitrary slope. Programming is accomplished by an I2C-compatible interface, which can operate at speeds of up to 400kHz.

APPLICATIONS

Optical Transceivers Linear and Nonlinear Compensation Instrumentation and Industrial Controls Mechanical Potentiometer Replacement PART DS1841T+ DS1841T+T&R TEMP RANGE -40°C to +100°C -40°C to +100°C PIN-PACKAGE 10 TDFN 10 TDFN Ordering Information Registers and Modes are capitalized for clarity. +Denotes a lead-free package. T&R = Tape and reel. Typical Operating Circuit TOP VIEW 3.3V SCL 10 4.7kΩ 4.7kΩ SDA SCL VCC 0.1μF GND VOUT DC-DC CONVERTER FB VAPD N.C.