Commit | Line | Data |
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5812f928 SH |
1 | Kernel driver ads7828 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
5 | * Texas Instruments/Burr-Brown ADS7828 | |
6 | Prefix: 'ads7828' | |
7 | Addresses scanned: I2C 0x48, 0x49, 0x4a, 0x4b | |
8 | Datasheet: Publicly available at the Texas Instruments website : | |
9 | http://focus.ti.com/lit/ds/symlink/ads7828.pdf | |
10 | ||
11 | Authors: | |
5d84291d | 12 | Steve Hardy <shardy@redhat.com> |
5812f928 SH |
13 | |
14 | Module Parameters | |
15 | ----------------- | |
16 | ||
17 | * se_input: bool (default Y) | |
18 | Single ended operation - set to N for differential mode | |
19 | * int_vref: bool (default Y) | |
20 | Operate with the internal 2.5V reference - set to N for external reference | |
21 | * vref_mv: int (default 2500) | |
22 | If using an external reference, set this to the reference voltage in mV | |
23 | ||
24 | Description | |
25 | ----------- | |
26 | ||
27 | This driver implements support for the Texas Instruments ADS7828. | |
28 | ||
29 | This device is a 12-bit 8-channel A-D converter. | |
30 | ||
31 | It can operate in single ended mode (8 +ve inputs) or in differential mode, | |
32 | where 4 differential pairs can be measured. | |
33 | ||
34 | The chip also has the facility to use an external voltage reference. This | |
35 | may be required if your hardware supplies the ADS7828 from a 5V supply, see | |
36 | the datasheet for more details. |