36 V digital pots

12 June 2013 Analogue, Mixed Signal, LSI

New from Microchip are two volatile, SPI digital potentiometers, the MCP41HV31 and MCP41HV51, which are its first to operate at 10, 12, 18, 24 and particularly 36 V, for systems requiring wide signal swing or high power supply voltages. The chips support both 7- and 8-bit resistor configurations, and a high terminal/wiper current, including the ability to sink/source up to 25 mA on all terminal pins for driving larger loads. The HV31’s 7-bit resistor network resolution enables 127 resistors and 128 steps, while the HV51’s 8-bit configuration supports 255 resistors and 256 steps. Additionally, both devices provide RAB resistance options of 5, 10, 50 and 100 kΩ.

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