5 * Maxim MAX517, MAX518, MAX519
7 Datasheet: Publicly available at the Maxim website
8 http://www.maxim-ic.com/
11 Roland Stigge <stigge@antcom.de>
16 The Maxim MAX517/518/519 is an 8-bit DAC on the I2C bus. The following table
17 shows the different feature sets of the variants MAX517, MAX518 and MAX519:
19 Feature MAX517 MAX518 MAX519
20 --------------------------------------------------------------------------
22 Two output channels X X
23 Simultaneous output updates X X
24 Supply voltage as reference X
25 Separate reference input X
26 Reference input for each DAC X
28 Via the iio sysfs interface, there are three attributes available: out1_raw,
29 out2_raw and out12_raw. With out1_raw and out2_raw, the current output values
30 (0..255) of the DACs can be written to the device. out12_raw can be used to set
31 both output channel values simultaneously.
33 With MAX517, only out1_raw is available.
35 Via out1_scale (and where appropriate, out2_scale), the current scaling factor
38 When the operating system goes to a power down state, the Power Down function
39 of the chip is activated, reducing the supply current to 4uA.
41 On power-up, the device is in 0V-output state.