Overview
The INA240A3PWR is a high-performance current-sense amplifier produced by Texas Instruments. This device is designed to offer precise current measurement over a wide common-mode voltage range, making it suitable for various applications involving motor controls, solenoid and valve controls, power management, and more. The INA240A3PWR features enhanced pulse width modulation (PWM) rejection, which minimizes the impact of common-mode transients associated with PWM signals. This amplifier operates from a single 2.7-V to 5.5-V power supply and is available in an 8-pin TSSOP package.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | INA240A3PWR |
| Package Type | TSSOP-8 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Quiescent Current | 2.4 mA (Maximum) |
| Common-Mode Voltage Range | -4 V to 80 V |
| Gain | 100 V/V |
| Offset Voltage | ±25 μV (Maximum) |
| Offset Drift | 250 nV/°C (Maximum) |
| Common-Mode Rejection Ratio (CMRR) | 132 dB (DC), 93 dB (AC at 50 kHz) |
| Operating Temperature Range | -40 °C to 125 °C |
| Terminal Finish | Nickel Palladium Gold |
| Moisture Sensitivity Level (MSL) | 2 |
Key Features
- Enhanced PWM Rejection: Reduces the effect of common-mode transients associated with PWM signals, ensuring accurate current measurements.
- Wide Common-Mode Range: Operates over a range of -4 V to 80 V, making it suitable for various applications.
- High CMRR: Excellent common-mode rejection ratio of 132 dB (DC) and 93 dB (AC at 50 kHz).
- Precision and Accuracy: Low offset voltage (±25 μV) and low offset drift (250 nV/°C) ensure high accuracy in current sensing.
- Multiple Gain Options: Available in different gain versions (20 V/V, 50 V/V, 100 V/V, 200 V/V) to optimize output voltage based on the target current range.
- Single Supply Operation: Operates from a single 2.7-V to 5.5-V power supply.
Applications
- Motor Controls: Suitable for motor drive systems where accurate current sensing is critical.
- Solenoid and Valve Controls: Ideal for applications involving solenoids and valves where precise current measurement is required.
- Power Management: Used in power management systems to monitor and control current flow.
- Actuator Controls: Applied in actuator control systems for precise current sensing.
- Pressure Regulators: Used in pressure regulation systems to ensure accurate current measurements.
- Telecom Equipment: Employed in telecom equipment for reliable current sensing.
Q & A
- What is the INA240A3PWR used for? The INA240A3PWR is a current-sense amplifier used for precise current measurement in various applications, including motor controls, solenoid and valve controls, and power management.
- What is the common-mode voltage range of the INA240A3PWR? The INA240A3PWR operates over a common-mode voltage range of -4 V to 80 V.
- What are the available gain options for the INA240A3PWR? The INA240A3PWR is available in different gain versions: 20 V/V, 50 V/V, 100 V/V, and 200 V/V.
- What is the supply voltage range for the INA240A3PWR? The INA240A3PWR operates from a single 2.7-V to 5.5-V power supply.
- What is the maximum quiescent current of the INA240A3PWR? The maximum quiescent current of the INA240A3PWR is 2.4 mA.
- What is the common-mode rejection ratio (CMRR) of the INA240A3PWR? The CMRR of the INA240A3PWR is 132 dB (DC) and 93 dB (AC at 50 kHz).
- What is the operating temperature range of the INA240A3PWR? The INA240A3PWR operates over a temperature range of -40 °C to 125 °C.
- What package type is the INA240A3PWR available in? The INA240A3PWR is available in an 8-pin TSSOP package.
- What is the offset voltage of the INA240A3PWR? The maximum offset voltage of the INA240A3PWR is ±25 μV.
- Does the INA240A3PWR have enhanced PWM rejection? Yes, the INA240A3PWR features enhanced PWM rejection to minimize the impact of common-mode transients associated with PWM signals.
