-4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection
Product details
Parameters
Package | Pins | Size
Features
- Enhanced PWM Rejection
- Excellent CMRR:
- 132-dB DC CMRR
- 93-dB AC CMRR at 50 kHz
- Wide Common-Mode Range: –4 V to 80 V
- Accuracy:
- Gain:
- Gain Error: 0.20% (Maximum)
- Gain Drift: 2.5 ppm/°C (Maximum)
- Offset:
- Offset Voltage: ±25 µV (Maximum)
- Offset Drift: 250 nV/°C (Maximum)
- Gain:
- Available Gains:
- INA240A1: 20 V/V
- INA240A2: 50 V/V
- INA240A3: 100 V/V
- INA240A4: 200 V/V
- Quiescent Current: 2.4 mA (Maximum)
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Description
The INA240 device is a voltage-output, current-sense amplifier with enhanced PWM rejection that can sense drops across shunt resistors over a wide common-mode voltage range from –4 V to 80 V, independent of the supply voltage. The negative common-mode voltage allows the device to operate below ground, accommodating the flyback period of typical solenoid applications. Enhanced PWM rejection provides high levels of suppression for large common-mode transients (ΔV/Δt) in systems that use pulse width modulation (PWM) signals (such as motor drives and solenoid control systems). This feature allows for accurate current measurements without large transients and associated recovery ripple on the output voltage.
This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. Four fixed gains are available: 20 V/V, 50 V/V, 100 V/V, and 200 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale. All versions are specified over the extended operating temperature range (–40°C to +125°C), and are offered in an 8-pin TSSOP and 8-pin SOIC packages.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Evaluate the performance of the INA240 current sense amplifier with the INA240 evaluation module. The INA240EVM package includes one large PCB that can be broken apart into four separate PCBs, one for each of the four gain versions (INA240A1/A2/A3/A4).
The EVM includes test points for external (...)
Features
- Simple access to all device pins
- Multiple input signal options
- Space for optional input filtering
- Configurable reference pins
Description
PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.
Features
- 24 port PoE PSE system and expandable to 48 ports
- Highly flexible system with configurable GUI and host interface
- Multiport power management
- IEEE802.3bt compliance
- Mutiple power supplies
- Supporting legacy powered devices
Description
Features
- Wide Input Voltage Range 12-V to 60-V Three Phase GaN Inverter with 7-ARMS Output Current per Phase
- High Accuracy Phase Current Sensing Over Temperature Range From –25°C to 85°C
- Precision In-Line Phase Current Sensing
- TI BoosterPack Compatible Interface
Get started
- See the Get Started sections of (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
TSSOP (PW) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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