5 * Linear Technology LTC2990
8 Datasheet: http://www.linear.com/product/ltc2990
10 Author: Mike Looijmans <mike.looijmans@topic.nl>
11 Tom Levens <tom.levens@cern.ch>
17 LTC2990 is a Quad I2C Voltage, Current and Temperature Monitor.
18 The chip's inputs can measure 4 voltages, or two inputs together (1+2 and 3+4)
19 can be combined to measure a differential voltage, which is typically used to
20 measure current through a series resistor, or a temperature with an external
27 This driver does not probe for PMBus devices. You will have to instantiate
34 in0_input Voltage at Vcc pin in millivolt (range 2.5V to 5V)
35 temp1_input Internal chip temperature in millidegrees Celcius
37 A subset of the following attributes are visible, depending on the measurement
40 in[1-4]_input Voltage at V[1-4] pin in millivolt
41 temp2_input External temperature sensor TR1 in millidegrees Celcius
42 temp3_input External temperature sensor TR2 in millidegrees Celcius
43 curr1_input Current in mA across V1-V2 assuming a 1mOhm sense resistor
44 curr2_input Current in mA across V3-V4 assuming a 1mOhm sense resistor
46 The "curr*_input" measurements actually report the voltage drop across the
47 input pins in microvolts. This is equivalent to the current through a 1mOhm
48 sense resistor. Divide the reported value by the actual sense resistor value
49 in mOhm to get the actual value.