Documentation/iio/ad4030.rst

1 .. SPDX-License-Identifier: GPL-2.0-only
16 * `AD4030-24 <https://www.analog.com/AD4030-24>`_
17 * `AD4032-24 <https://www.analog.com/AD4032-24>`_
18 * `AD4630-16 <https://www.analog.com/AD4630-16>`_
19 * `AD4630-24 <https://www.analog.com/AD4630-24>`_
20 * `AD4632-16 <https://www.analog.com/AD4632-16>`_
21 * `AD4632-24 <https://www.analog.com/AD4632-24>`_
29 - One channel for the differential data
30 - One channel for the common byte.
34 +------------------------------------+------------------------------------+
37 | - voltage0-voltage1 (differential) | - voltage0-voltage1 (differential) |
38 | - voltage2 (common-mode)           | - voltage2-voltage3 (differential) |
39 |                                    | - voltage4 (common-mode)           |
40 |                                    | - voltage5 (common-mode)           |
41 +------------------------------------+------------------------------------+
44 ------
48 common-mode channel, the label is ``common-modeN`` where ``N`` is the
53 +-----------------+-----------------+
56 | - differential0 | - differential0 |
57 | - common-mode0  | - differential1 |
58 |                 | - common-mode0  |
59 |                 | - common-mode1  |
60 +-----------------+-----------------+
66 ----------------
77 .. code-block::
79     +-------------+         +-------------+
82     |         CNV |<--------| CNV         |
83     |          CS |<--------| CS          |
84     |         SDI |<--------| SDO         |
85     |        SDO0 |-------->| SDI         |
86     |        SCLK |<--------| SCLK        |
87     +-------------+         +-------------+
96 --------------
101 ------------
104 datasheet. This is due to the `Differential data + common-mode`_ encoding
114 - Only differential channels are enabled in a buffered read
115 - Oversampling attribute is set to 1
117 Differential data + common-mode
122 - Differential and common-mode channels are enabled in a buffered read
123 - Oversampling attribute is set to 1
125 For the 24-bits chips, this mode is also available with 16-bits differential
133 - Only differential channels are selected enabled in a buffered read
134 - Oversampling attribute is greater than 1
137 -----------------------
139 Each differential data channel has a 16-bits unsigned configurable hardware
144 For the ADCs ending in ``-24``, the gain is encoded on 24-bits.
145 Likewise, the ADCs ending in ``-16`` have a gain encoded on 16-bits. Note that
155 -----------------
159 at the device tree to determine which is being used. If ``ref-supply`` is
161 disabled. If ``refin-supply`` is present, then the internal buffered reference
165 -----
168 device tree to see if the ``reset-gpio`` is populated.
173 ----------------------
175 - ``BUSY`` indication
176 - Additional wiring modes
177 - Additional clock modes
178 - Differential data 16-bits + common-mode for 24-bits chips
179 - Overrange events
180 - Test patterns