INA296A3IDR

The INA296x is an ultra-precision 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. High-accuracy current measurement is achieved through a combination of low offset voltage (±10µV maximum), tight gain error (±0.01% maximum), and high DC common-mode rejection ratio (166dB typical). The INA296x is suitable not only for high-voltage bidirectional DC current measurement, but also for high-speed applications requiring 1.1MHz signal bandwidth and fast settling time, such as transient detection and rapid overcurrent protection. The INA296x operates from a single supply of 2.7V to 20V with a supply current of 2.5mA. Five gain options are available: 10V/V, 20V/V, 50V/V, 100V/V, and 200V/V. The multiple gain options allow optimization between available shunt resistance values and wide output dynamic range requirements. The INA296x operates over a temperature range of -40°C to 125°C.

Applications

• 48V DC/DC converters
• 48V battery management systems (BMS)
• Test and measurement
• Macro remote radio units (RRU)
• 48V rack servers
• 48V commercial networking and server power supplies (PSU)

Key features

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