INA209 is a 26V, 12-bit, i2c output current/voltage/power monitor with analog comparator
The INA209 is a high-side current shunt and power monitor with an I 2 C interface. The INA209 monitors the shunt drop and the shunt bus voltage. Programmable calibration values combined with an internal multiplier allow direct amperage readings. An additional multiply register calculates power in watts. The INA209 has two independent onboard watchdog functions: a warning comparator and an overrun comparator. The warning comparator can be used to monitor the lower warning limit and includes a user-defined delay. An over-limit comparator helps monitor upper limits that may require an immediate system shutdown.
The INA209 also includes an analog comparator and a programmable digital-to-analog converter (DAC) that combine to provide the fastest possible response to current overload conditions.
The INA209 can be used with hot-swap controllers that already use current sense resistors. The INA209 full-scale range can be chosen to be within the AT25080B-XHL-T hot-swap controller detection limits, or wide enough to encompass them.
The INA209 senses shunts on a bus from 0V to 26V. The device operates from a single +3V to +5.5V supply and can sink a maximum supply current of 1.5mA. It is specified for operation in the temperature range of -25°C to +85°C.
characteristic:
Detect bus voltage from 0V to +26V
● Report current, voltage and power; store peaks
●Triple watchdog limit:
○ Delay reduction warning
○The upper limit exceeds the limit, no delay
○ Quick simulation key
●High precision: 1% MAX OVER TEMP
●Application:
○Server
○Telecommunication equipment
○Car
○Energy management
○Battery charger
○Welding equipment
○ Power
○ Quiz Equipment
parameter:
Common Mode Voltage (Max) (V): 26
Common Mode Voltage (Min) (V): 0
Input offset (+/-) (max) (uV): 100
Input Offset Drift (+/-) (Typ) (uV/C): 0.1
Gain (V/V): 1, 0.5, 0.25, 0.125
Gain Error (%): 0.5
Gain Error Drift (+/-) (max) (ppm/°C): 83
CMRR (min) (dB): 120
Bandwidth (kHz): 5.5
Supply Voltage (Max) (V): 5.5
Supply voltage (Min) (V): 3
IQ (max) (mA): 1.5
Digital interface: I2C, SMBus
Features: Alarm function, bidirectional, low end function, programmable gain
Resolution (bits): 12
Operating temperature range (°C): -40 to 125