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MAX4540 - Low-Voltage / Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers

General Description

The MAX4539/MAX4540 low-voltage, CMOS 8-channel (MAX4539) and dual 4-channel (MAX4540) multiplexers are ideal for precision ADC calibration and system selfmonitoring applications.

Key Features

  • o On-Chip Gain and Offset Divider Networks Provide 15-Bit Accurate Output Ratios o On-Chip V+ to GND and V+ to V- Divider Networks Provide 8-Bit Accurate Output Ratios o RON: 100Ω max o RON Matching Between Channels: 6Ω max o Charge Injection: 5pC max o Low 0.1nA Off Leakage Current o Small 20-Pin SSOP/SO/DIP Packages MAX4539/MAX4540 Pin Configurations/ _______________Functional Diagrams V+ 1 3R MAX4539 R2 LOGIC.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4780; Rev 1; 6/99 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers General Description The MAX4539/MAX4540 low-voltage, CMOS 8-channel (MAX4539) and dual 4-channel (MAX4540) multiplexers are ideal for precision ADC calibration and system selfmonitoring applications. These calibration multiplexers (cal-muxes) have precision resistor-dividers to generate accurate voltage ratios from an input reference voltage. The reference ratios include 15/4096 and 4081/4096 of the external reference voltage, accurate to 15 bits, and 1/2V+ and 5/8(V+ - V-), accurate to 8 bits. The external reference voltage as well as ground can also be switched to the output. The MAX4539/MAX4540 have enable inputs and address latching. All digital inputs have 0.8V and 2.