型号INA209
品牌
分类数字功率监控器
描述具有模拟比较器的 26V、12 位、I2C 输出电流/电压/功率监控器
相关操作
产品概述

参数

Common-mode voltage (max) (V) 26
Common-mode voltage (min) (V) 0
Input offset (±) (max) (V) 0.0001
Input offset drift (±) (max) (V/°C) 0.00000016
Input offset drift (±) (typ) (V/°C) 0.0000001
Voltage gain (V/V) 0.125, 0.25, 0.5, 1
CMRR (min) (dB) 120
Bandwidth (MHz) 0.0055
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

封装 | 引脚 | 尺寸

TSSOP (PW) 16 32 mm² 5 x 6.4

特性

  • 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.

说明

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.