5 * Texas Instruments INA219
7 Addresses: I2C 0x40 - 0x4f
8 Datasheet: Publicly available at the Texas Instruments website
11 * Texas Instruments INA220
13 Addresses: I2C 0x40 - 0x4f
14 Datasheet: Publicly available at the Texas Instruments website
17 * Texas Instruments INA226
19 Addresses: I2C 0x40 - 0x4f
20 Datasheet: Publicly available at the Texas Instruments website
23 * Texas Instruments INA230
25 Addresses: I2C 0x40 - 0x4f
26 Datasheet: Publicly available at the Texas Instruments website
29 * Texas Instruments INA231
31 Addresses: I2C 0x40 - 0x4f
32 Datasheet: Publicly available at the Texas Instruments website
35 Author: Lothar Felten <lothar.felten@gmail.com>
40 The INA219 is a high-side current shunt and power monitor with an I2C
41 interface. The INA219 monitors both shunt drop and supply voltage, with
42 programmable conversion times and filtering.
44 The INA220 is a high or low side current shunt and power monitor with an I2C
45 interface. The INA220 monitors both shunt drop and supply voltage.
47 The INA226 is a current shunt and power monitor with an I2C interface.
48 The INA226 monitors both a shunt voltage drop and bus supply voltage.
50 INA230 and INA231 are high or low side current shunt and power monitors
51 with an I2C interface. The chips monitor both a shunt voltage drop and
54 The shunt value in micro-ohms can be set via platform data or device tree at
55 compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
56 refer to the Documentation/devicetree/bindings/hwmon/ina2xx.txt for bindings
57 if the device tree is used.
59 Additionally ina226 supports update_interval attribute as described in
60 Documentation/hwmon/sysfs-interface. Internally the interval is the sum of
61 bus and shunt voltage conversion times multiplied by the averaging rate. We
62 don't touch the conversion times and only modify the number of averages. The
63 lower limit of the update_interval is 2 ms, the upper limit is 2253 ms.
64 The actual programmed interval may vary from the desired value.