Part A
ACS722LLCTR-10AU-T
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 4978 PCS
- Package
- SOIC-N-8
- Series
- Current Sensors
Replacement verdict
Compatible functional replacement candidate
The ACS722LLCTR-10AU-T is not a direct drop-in replacement for the ACS723LLCTR-05AB-T due to differences in current sensing range, output type, and package construction. However, both devices share the same Allegro current sensor family architecture, bidirectional sensing capability, and similar supply voltage requirements, making the ACS722 a viable functional substitute in applications where the higher current range is acceptable and the unidirectional output configuration can be accommodated through circuit redesign.
Current Sensing Range
Validation required
Output Type
Not compatible
Supply Voltage
High match
Package Type
Validation required
Parts at a glance
Part B
ACS723LLCTR-05AB-T
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 5274 PCS
- Package
- SOIC-8
- Series
- Current Sensors
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ACS723LLCTR-05AB-T | ACS722LLCTR-10AU-T | Why it matters |
|---|---|---|---|
| Current Sensing Range | ±5 A | ±10 A | Defines the maximum measurable current; a smaller range offers finer resolution for low-current loads, while a larger range supports higher-power applications. |
| Sensitivity | 400 mV/A | 132 mV/A | Higher sensitivity provides greater output voltage per amp, improving accuracy and noise immunity for low-current measurements. |
| Supply Voltage | 4.5 V to 5.5 V | 3.0 V to 3.6 V | Determines compatibility with the system power rail; mismatched supply voltages require level shifting or a different regulator. |
| Output Type | Analog, ratiometric | Analog, ratiometric | Ratiometric analog output scales with supply voltage, so the ADC reference must match the sensor supply for accurate readings. |
| Isolation Voltage | 2.1 kVrms | 3.0 kVrms | Higher isolation rating provides greater safety margin when sensing currents referenced to hazardous or high-voltage potentials. |
| Bandwidth | 80 kHz | 80 kHz | Sets the maximum signal frequency the sensor can track; adequate bandwidth is needed for fast current transients and PWM loads. |
| Package | 8-lead SOIC | 8-lead SOIC | Footprint and pinout must match for a drop-in replacement on an existing PCB layout. |
| Operating Temperature Range | -40 °C to 150 °C | -40 °C to 150 °C | Ensures the sensor meets accuracy and reliability specifications across the application's ambient and self-heating conditions. |
| Accuracy | ±3% typical | ±3% typical | Total error over temperature and current affects measurement precision and system calibration requirements. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ACS722LLCTR-10AU-T | ACS723LLCTR-05AB-T |
|---|---|---|
| Part Status | Active | Active |
| For Measuring | DC | AC/DC |
| Sensor Type | Hall Effect, Open Loop | Hall Effect, Open Loop |
| Current - Sensing | 10A | 5A |
| Number of Channels | 1 | 1 |
| Output | Ratiometric, Voltage | Ratiometric, Voltage |
| Sensitivity | 264mV/A | 400mV/A |
| Frequency | DC ~ 80kHz | DC ~ 80kHz |
| Linearity | ±1% | ±1% |
| Accuracy | ±3% | ±3% |
| Voltage - Supply | 3V ~ 3.6V | 5V |
| Response Time | 5µs | 5µs |
| Current - Supply (Max) | 12mA | 14mA |
| Operating Temperature | -40°C ~ 150°C | -40°C ~ 150°C |
| Polarization | Unidirectional | Bidirectional |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the ACS723LLCTR-05AB-T and the ACS722LLCTR-10AU-T?
The ACS723LLCTR-05AB-T is a galvanically isolated current sensor with a 5 A bidirectional measurement range and an analog output, while the ACS722LLCTR-10AU-T is a galvanically isolated current sensor with a 10 A unidirectional measurement range and an analog output. The ACS723 device is specified for bidirectional current sensing, whereas the ACS722 device is specified for unidirectional current sensing.
Are the ACS723LLCTR-05AB-T and ACS722LLCTR-10AU-T pin-to-pin compatible?
Both devices are offered in the same SOIC-8 package footprint, but pin-to-pin compatibility cannot be assumed solely from the package. The ACS723LLCTR-05AB-T and ACS722LLCTR-10AU-T have different measurement ranges and directionality, so the surrounding circuit and firmware must be validated against the respective datasheets before any substitution.
What is the measurement range of each device?
The ACS723LLCTR-05AB-T has a specified current measurement range of ±5 A (bidirectional). The ACS722LLCTR-10AU-T has a specified current measurement range of 0 A to 10 A (unidirectional).
What supply voltage do these current sensors require?
Both the ACS723LLCTR-05AB-T and the ACS722LLCTR-10AU-T are designed for a single 3.3 V supply voltage, as specified in their respective Allegro MicroSystems datasheets.
What type of output do the ACS723LLCTR-05AB-T and ACS722LLCTR-10AU-T provide?
Both devices provide an analog voltage output proportional to the sensed current. The ACS723LLCTR-05AB-T output is centered at mid-supply for bidirectional sensing, while the ACS722LLCTR-10AU-T output is referenced for unidirectional sensing.
What is the isolation voltage rating for these devices?
Both the ACS723LLCTR-05AB-T and the ACS722LLCTR-10AU-T are galvanically isolated current sensors. The specific isolation voltage rating should be taken from the official Allegro MicroSystems datasheet for each part number, as it is a critical safety parameter.
Can the ACS723LLCTR-05AB-T be used to replace the ACS722LLCTR-10AU-T in an existing design?
Direct replacement is not recommended without a full design review. The ACS723LLCTR-05AB-T is bidirectional and rated for ±5 A, while the ACS722LLCTR-10AU-T is unidirectional and rated for 10 A. The different range and directionality affect sensitivity, output voltage swing, and firmware scaling, so the target application must be revalidated against the ACS723LLCTR-05AB-T datasheet.
What are the typical applications for the ACS723LLCTR-05AB-T and ACS722LLCTR-10AU-T?
Both devices are used for current sensing in industrial, automotive, and consumer applications. The ACS723LLCTR-05AB-T is suited for bidirectional current monitoring such as motor control and power management, while the ACS722LLCTR-10AU-T is suited for unidirectional current monitoring such as load detection and power supply monitoring.