Specifications

www.digikey.com/maxim-industrial 21
Programmable logic controllers (PLCs)
Analog output functions
Benefits
• Inexpensive and easy to use
– Up to 80V operating voltage across sum
of R1 and R2
– Resistance ratios from 1:1 to 30:1
– Tight initial ratio accuracy
– Three grades: 0.035%, 0.05%, and 0.1%
– Low 2ppm/°C resistor-ratio drift
• Saves board space
– Tiny 3-pin SOT23 package
MAX5490/MAX5491/MAX5492
The MAX5490 family of precision resistor-dividers consists of two
accurately matched resistors with access to the ends and center
of the divider. This family offers excellent resistance matching of
0.035% (A grade), 0.05% (B grade), and 0.1% (C grade). It includes an
extremely low resistance-ratio temperature drift of 2ppm/°C over
-40°C to +85°C, and has an end-to-end resistance of 30kΩ. Resistance
ratios from 1:1 to 30:1 are available, as are ten standard ratios.
Resistor network saves cost and space without sacrificing system precision
DAC
MAX5491
MAX4238
+
−
Implementing a robust, precision analog output with the MAX5491.