1 Features
• AEC-Q100 qualified for automotive applications:
– Temperature grade 1: −40°C to +125°C, TA
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Wide common-mode voltage:
– Operational voltage: −2V to +80V
– Survival voltage: −12V to +85V
• Bidirectional operation
• High small signal bandwidth: 650kHz (20V/V Gain)
• Slew rate: 2.5V/μs
• Step response settling time to 1%: 6.5μs
• High CMRR: 120dB
• Gain error (maximum) : ±0.25%, ±10ppm/°C drift
• Offset voltage (maximum): ±150μV, ±0.5μV/°C drift
• Operates from 2.7V to 12V supply
• Operational current: 650μA
• Available gains:
– INA299A1-Q1: 20V/V
– INA299A2-Q1: 50V/V
– INA299A3-Q1: 100V/V
• Package options: SOT23-6 (DBV)

2 Applications
• eTurbo/charger
• Electric power steering (EPS)
• Starter/generator
• Regenerative breaking
• Brake system

3 Description
The INA299-Q1 is a precise, bidirectional current
sense amplifier that can measure voltage drops
across shunt resistors over a wide common-mode
range from –2V to 80V, independent of the supply
voltage. The high-precision current measurement is
achieved through a combination of low offset voltage
(±150μV, maximum), small gain error (±0.25%,
maximum) and a high DC CMRR (typical 120dB).
The INA299-Q1 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 650kHz and fast settling time.
The INA299-Q1 operates from a single 2.7V to 12V
supply, drawing 650μA of supply current. The INA299-
Q1 is available in three gain options: 20V/V, 50V/V,
100V/V. Multiple gain options allow for optimization
between available shunt resistor values and wide
output dynamic range requirements.
The INA299-Q1 is specified over operating
temperature range of −40°C to +125°C and is offered
in a 6-pin SOT-23 package.