INA209 Texas instruments

INA209

Уточнить цену

INA209

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

The INA209 is a high-side current shunt and power monitor with an I2C interface. The INA209 monitors both shunt drop and shunt bus voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The INA209 features two separate, onboard watchdog capabilities: a warning comparator and an over-limit comparator. The warning comparator is useful for monitoring lower warning limits and incorporates a user-defined delay. The over-limit comparator assists with monitoring upper limits that could require 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 responses to current overload conditions. The INA209 can be used together with hot swap controllers that already use a current sense resistor. The INA209 full-scale range can be selected to be either within the hot-swap controller sense limits, or wide enough to include them. The INA209 senses across shunts on buses that can vary from 0V to 26V. The device uses a single +3V to +5.5V supply, drawing a maximum of 1.5mA of supply current. It is specified for operation from -25°C to +85°C.

SENSES BUS VOLTAGES FROM 0V TO +26V
REPORTS CURRENT, VOLTAGE, AND POWER; STORES PEAKS
TRIPLE WATCHDOG LIMITS:
- Lower Warning with Delay
- Upper Over-limit, No Delay
- Fast Analog Critical
HIGH ACCURACY: 1% MAX OVER TEMP
APPLICATIONS
- SERVERS
- TELECOM EQUIPMENT
- AUTOMOTIVE
- POWER MANAGEMENT
- BATTERY CHARGERS
- WELDING EQUIPMENT
- POWER SUPPLIES
- TEST EQUIPMENT

I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.

Common-mode voltage (max) (V)	26
Common-mode voltage (min) (V)	0
Input offset (±) (max) (µV)	100
Input offset drift (±) (max) (µV/°C)	0.16
Input offset drift (±) (typ) (µV/°C)	0.1
Voltage gain (V/V)	0.125, 0.25, 0.5, 1
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
Gain error (%)	0.5
Gain error drift (±) (max) (ppm/°C)	83
Features	Alert Function, Bi-directional, Integrated Power Monitor, Low-side Capable, Programmable Gain
Number of channels	1
Resolution (Bits)	12
Rating	Catalog
Operating temperature range (°C)	-40 to 125