Lines Matching +full:boost +full:- +full:mode
1 .. SPDX-License-Identifier: GPL-2.0-only
23 * `AD7380-4 <https://www.analog.com/en/products/ad7380-4.html>`_
24 * `AD7381-4 <https://www.analog.com/en/products/ad7381-4.html>`_
25 * `AD7383-4 <https://www.analog.com/en/products/ad7383-4.html>`_
26 * `AD7384-4 <https://www.analog.com/en/products/ad7384-4.html>`_
27 * `AD7386-4 <https://www.analog.com/en/products/ad7386-4.html>`_
28 * `AD7387-4 <https://www.analog.com/en/products/ad7387-4.html>`_
29 * `AD7388-4 <https://www.analog.com/en/products/ad7388-4.html>`_
30 * `AD7389-4 <https://www.analog.com/en/products/ad7389-4.html>`_
31 * `ADAQ4370-4 <https://www.analog.com/en/products/adaq4370-4.html>`_
32 * `ADAQ4380-4 <https://www.analog.com/en/products/adaq4380-4.html>`_
33 * `ADAQ4381-4 <https://www.analog.com/en/products/adaq4381-4.html>`_
40 ----------------
46 -----------------
48 ad7380-4
51 ad7380-4 supports only an external reference voltage (2.5V to 3.3V). It must be
52 declared in the device tree as ``refin-supply``.
54 ad7389-4
57 ad7389-4 supports only an internal reference voltage. ``refin-supply`` and
58 ``refio-supply`` properties are both omitted in this case.
64 derived from one of its supplies (``refin-supply``)
71 - Internal reference (2.5V)
72 - External reference (2.5V to 3.3V)
74 The source is determined by the device tree. If ``refio-supply`` is present,
77 Oversampling and resolution boost
78 ---------------------------------
85 When the on-chip oversampling function is enabled the performance of the ADC can
86 exceed the default resolution. To accommodate the performance boost achievable,
88 resolution boost feature can only be enabled when oversampling is enabled and
89 oversampling is not as useful without the resolution boost, the driver
90 automatically enables the resolution boost if and only if oversampling is
93 Since the resolution boost feature causes 16-bit chips to now have 18-bit data
99 .. code-block:: bash
104 -----
107 when configured in 1 SDO line mode. 4 channels variants, can use SDOD as an
108 alert pin when configured in 1 or 2 SDO line(s) mode, although only 1 SDO line
109 mode is currently supported by the driver (see `SPI wiring modes`_).
111 At the end of a conversion the active-low alert pin gets asserted if the
118 .. code-block:: bash
125 .. code-block:: bash
135 Channel selection and sequencer (single-end chips only)
136 -------------------------------------------------------
138 Single-ended chips of this family (ad7386/7/8(-4)) have a 2:1 multiplexer in
140 allow for either manual selection or automatic switching (sequencer mode), of
144 export 4 channels and ad7386-4/7-4/8-4 export 8 channels.
147 0-1 or 0-3) and inputs ``AinX1`` correspond to second half (i.e 2-3 or 4-7).
150 .. code-block::
153 | +----------------------------
156 voltage0 | AinA0 --|--->| | | |
157 | | | mux |----->| ADCA |---
158 voltage2 | AinA1 --|--->| | | |
162 voltage1 | AinB0 --|--->| | | |
163 | | | mux |----->| ADCB |---
164 voltage3 | AinB1 --|--->| | | |
167 | +----------------------------
170 When enabling sequencer mode, the effective sampling rate is divided by two.
176 gain is selectable from device tree using the ``adi,gain-milli`` property.
181 ----------------------
183 - 2/4 SDO lines
184 - Rolling average oversampling
185 - Power down mode
186 - CRC indication