DS1841
NOT RECOMMENDED FOR NEW DESIGNSTemperature-Controlled, NV, I²C, Logarithmic Resistor
Industry's Only Temperature-Compensated Resistor Optimized for APD Bias in Fiber Optic Modules
- Part Models
- 2
- 1ku List Price
- Starting From $1.37
Part Details
- 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
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. 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
- Instrumentation and Industrial Controls
- Linear and Nonlinear Compensation
- Mechanical Potentiometer Replacement
- Optical Transceivers
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1841N+ | Thin Dual Flatpack No Leads, Exposed Pad | ||
| DS1841N+T&R | Thin Dual Flatpack No Leads, Exposed Pad |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 20, 2016 - 1612 ASSEMBLY |
||
| DS1841N+ | ||
| DS1841N+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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