| Steve Hardy | 5812f92 | 2008-01-22 23:00:02 +0000 | [diff] [blame^] | 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: |
| 12 | Steve Hardy <steve@linuxrealtime.co.uk> |
| 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. |