INA296A3IDDFR

The INA296x is an ultra-precise bidirectional current-sense amplifier that measures the voltage drop across a shunt resistor over a wide common-mode range of -5V to 110V, independent of the supply voltage. The combination of low offset voltage of ±10μV (maximum), small gain error of ±0.01% (maximum), and high DC CMRR of 166dB (typical) enables high-accuracy current measurement. With a signal bandwidth of 1.1MHz and fast settling time, the INA296x is suited not only for high-voltage bidirectional DC current measurement, but also for high-speed applications such as transient detection and fast overcurrent protection. The INA296x operates from a single supply of 2.7V to 20V and draws 2.5mA of supply current. Five gain options are available: 10V/V, 20V/V, 50V/V, 100V/V, and 200V/V. The multiple gain options enable optimization between available shunt resistance values and wide output dynamic range requirements. The INA296x is rated for an operating temperature range of -40°C to +125°C.

Applications

• 48V DC/DC converter
• 48V battery management system (BMS)
• Test and measurement
• Macro remote radio unit (RRU)
• 48V rack server
• 48V commercial network and server power supply (PSU)

Key features

• Wide common-mode voltage range:
• Operating voltage: -5V to +110V
• Survivable voltage: -20V to +120V
• Bidirectional operation
• High small-signal bandwidth: 1.1 MHz (at all gains)
• Slew rate: 8V/μs
• 1% step response settling time: 1 μs
• Excellent CMRR: 166 dB
• Accuracy:
• Gain error (maximum)
• Version A: ±0.01%, ±1ppm/°C drift
• Version B: ±0.1%, ±5ppm/°C drift
• Offset voltage (maximum)
• Version A: ±10μV, ±0.1μV/°C drift
• Version B: ±150μV, ±0.5μV/°C drift
• Available gains:
• INA296A1, INA296B1: 10 V/V
• INA296A2, INA296B2: 20 V/V
• INA296A3, INA296B3: 50 V/V
• INA296A4, INA296B4: 100 V/V
• INA296A5, INA296B5: 200 V/V
• Package options: SOT23-8, VSSOP-8, SOIC-8, VSSOP-10