37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
|
Kernel driver ads7828
|
||
|
|
=====================
|
||
|
|
|
||
|
|
Supported chips:
|
||
|
|
* Texas Instruments/Burr-Brown ADS7828
|
||
|
|
Prefix: 'ads7828'
|
||
|
|
Addresses scanned: I2C 0x48, 0x49, 0x4a, 0x4b
|
||
|
|
Datasheet: Publicly available at the Texas Instruments website :
|
||
|
|
http://focus.ti.com/lit/ds/symlink/ads7828.pdf
|
||
|
|
|
||
|
|
Authors:
|
||
|
|
Steve Hardy <shardy@redhat.com>
|
||
|
|
|
||
|
|
Module Parameters
|
||
|
|
-----------------
|
||
|
|
|
||
|
|
* se_input: bool (default Y)
|
||
|
|
Single ended operation - set to N for differential mode
|
||
|
|
* int_vref: bool (default Y)
|
||
|
|
Operate with the internal 2.5V reference - set to N for external reference
|
||
|
|
* vref_mv: int (default 2500)
|
||
|
|
If using an external reference, set this to the reference voltage in mV
|
||
|
|
|
||
|
|
Description
|
||
|
|
-----------
|
||
|
|
|
||
|
|
This driver implements support for the Texas Instruments ADS7828.
|
||
|
|
|
||
|
|
This device is a 12-bit 8-channel A-D converter.
|
||
|
|
|
||
|
|
It can operate in single ended mode (8 +ve inputs) or in differential mode,
|
||
|
|
where 4 differential pairs can be measured.
|
||
|
|
|
||
|
|
The chip also has the facility to use an external voltage reference. This
|
||
|
|
may be required if your hardware supplies the ADS7828 from a 5V supply, see
|
||
|
|
the datasheet for more details.
|