DS1841 Temperature-Controlled, NV, I2C, Logarithmic Resistor
●General Description
■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.
●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
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DS1841 、 DS1841N+ 、 DS1841N+T&R 、 DS1841T+ 、 DS1841T+T&R |
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Datasheet |
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Please see the document for details |
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TDFN;TDFN-EP;T1033+1 |
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English Chinese Chinese and English Japanese |
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5/08 |
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Rev 2 |
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639 KB |
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