INA296B4IDDFR

The INA296x is an ultra-precise, bidirectional current sense amplifier than can measure voltage drops across shunt resistors over a wide common-mode range from -5 V to 110 V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±10 μV, maximum), small gain error (±0.01%, maximum) and a high DC CMRR (typical 166 dB). The INA296x is not only designed for high voltage, bidirectional DC current measurements, but also for high-speed applications (such as transient detection and fast overcurrent protection) with a high signal bandwidth of 1.1 MHz and fast settling time. The INA296x operates from a single 2.7 V to 20 V supply, drawing 2.5 mA of supply current. The INA296x is available in five gain options: 10 V/V, 20 V/V, 50 V/V, 100 V/V, and 200 V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements. The INA296x is specified over operating temperature range of -40°C to +125°C.

Applications

• 48-V DC/DC Converter
• 48-V battery management systems (BMS)
• Test & Measurement
• Macro remote radio unit (RRU)
• 48-V rack server
• 48-V merchant network & server power supply (PSU)

Key features

• Wide common-mode voltage:
• Operational voltage: -5 V to +110 V
• Survival voltage: -20 V to +120 V
• Bidirectional operation
• High small signal bandwidth: 1.1 MHz (at all gains)
• Slew rate: 8 V/μs
• Step response settling time to 1%: 1 μs
• Excellent CMRR: 166 dB
• Accuracy:
• Gain error (maximum)
• Version A: ±0.01%, ±1 ppm/°C drift
• Version B: ±0.1%, ±5 ppm/°C drift
• Offset voltage (maximum)
• Version A: ±10 μV, ±0.1 μV/°C drift
• Version B: ±150 μV, ±0.5 μV/°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