Overview
The INA199C1-Q1 is a voltage-output, current-sense amplifier designed by Texas Instruments. This device is part of the INA199-Q1 family, which is AEC-Q100 qualified for automotive applications, ensuring reliability over a temperature range of –40°C to 125°C. The INA199C1-Q1 features a zero-drift topology, enabling high-precision current measurements with minimal offset voltage. It can sense voltage drops across shunts at common-mode voltages from –0.1 V to 26 V, independent of the supply voltage, which can range from 2.7 V to 26 V. This amplifier is suitable for both low-side and high-side current sensing configurations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain | 100 | V/V |
| Input Offset Voltage | ≤ 150 µV | V |
| Gain Error | ±1.5% (B version), ±1% (C version) | % |
| Bandwidth | 30 kHz | kHz |
| Slew Rate | 0.4 V/µs | V/µs |
| Voltage Noise Density | 25 nV/√Hz | nV/√Hz |
| Quiescent Current | 65 - 100 µA | µA |
| Package | SC70 (6-pin) | - |
| Body Size | 2.00 mm × 1.25 mm | mm |
Key Features
- Zero-Drift Topology: Offers high-precision measurements with low input offset voltages and minimal temperature drift.
- Wide Common-Mode Range: Can sense voltages across shunts at common-mode voltages from –0.1 V to 26 V.
- Flexible Gain Options: Available in fixed gains of 50 V/V, 100 V/V, and 200 V/V.
- Low Power Consumption: Operates with a quiescent current of 65 - 100 µA.
- AEC-Q100 Qualified: Suitable for automotive applications with a temperature range of –40°C to 125°C.
- Functional Safety-Capable: Designed to meet functional safety requirements.
Applications
The INA199C1-Q1 is versatile and can be used in various applications, including:
- Automotive Systems: Ideal for current sensing in automotive systems due to its AEC-Q100 qualification and wide temperature range.
- Industrial Automation: Suitable for high-precision current measurement in industrial control systems.
- Power Management: Can be used in power management systems to monitor current flow accurately.
- Medical Devices: Applicable in medical devices requiring precise current sensing.
Q & A
- What is the operating temperature range of the INA199C1-Q1?
The INA199C1-Q1 operates over a temperature range of –40°C to 125°C.
- What are the available gain options for the INA199-Q1 family?
The INA199-Q1 family is available in fixed gains of 50 V/V, 100 V/V, and 200 V/V.
- What is the typical quiescent current of the INA199C1-Q1?
The typical quiescent current is between 65 µA and 100 µA.
- What is the maximum input offset voltage of the INA199C1-Q1?
The maximum input offset voltage is 150 µV.
- What is the bandwidth of the INA199C1-Q1?
The bandwidth is 30 kHz.
- Is the INA199C1-Q1 AEC-Q100 qualified?
Yes, the INA199C1-Q1 is AEC-Q100 qualified for automotive applications.
- What package is the INA199C1-Q1 available in?
The INA199C1-Q1 is available in a 6-pin SC70 package.
- What is the slew rate of the INA199C1-Q1?
The slew rate is 0.4 V/µs.
- What is the voltage noise density of the INA199C1-Q1?
The voltage noise density is 25 nV/√Hz.
- Can the INA199C1-Q1 be used in high-side current sensing configurations?
Yes, the INA199C1-Q1 can be used in both low-side and high-side current sensing configurations.
