TI INA310A1IDGKR

The INA310x is an ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from -4 V to 110 V, independent of supply voltage with an integrated comparator. The high precision current measurement accuracy is achieved through a combination of low offset voltage (20 μV, maximum), small gain error (0.15%, maximum) and a high DC CMRR (160 dB, typical). The INA310x has a high signal bandwidth of 1.3 MHz designed for high voltage DC current measurements and high-speed applications like fast overcurrent protection. The INA310x incorporates an open-drain comparator and internal reference that provides a 0.6 V threshold. An external resistive divider sets the current trip point. The comparator includes a latching capability that can be made transparent by grounding (or leaving open) the RESET pin. The INA310x operates from a single 2.7 V to 20 V supply and draws 1.6 mA of supply current. The INA310x is available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address a wide dynamic range of current sensing applications. The INA310x is specified over an operating temperature range of -40°C to +125°C and is offered in a space-saving 8-pin VSSOP package.

• Wide common-mode voltage: Operational voltage: -4 V to +110 V – Survival voltage: -20 V to +120 V
• High signal bandwidth: 1.3 MHz
• Slew rate: 2.5 V/μs
• Excellent CMRR: 160 dB
• Accuracy:
  • Gain error (maximum):
    • Version A: 0.15%, 10 ppm/°C drift
    • Version B: 0.5%, 20 ppm/°C drift
  • Offset voltage (maximum):
    • Version A: ±20 μV, ±0.25 μV/°C drift
    • Version B: ±150 μV, ±1 μV/°C drift
• On-board open-drain comparator
• Internal comparator voltage reference: 0.6 V
• Propagation delay time: 1 μs
• Latching capability on comparator
• Available gains:
  • INA310A1, INA310B1: 20 V/V
  • INA310A2, INA310B2: 50 V/V
  • INA310A3, INA310B3: 100 V/V
  • INA310A4, INA310B4: 200 V/V
  • INA310A5, INA310B5: 500 V/V
• Package options: VSSOP - 8

• 48 V DC/DC converter
• 48 V battery management systems (BMS)
• Test and measurement
• Macro remote radio unit (RRU)
• 48 V rack server
• 48 V merchant network & server power supply (PSU)
• Solenoids and actuators