Part A
ACS724KMATR-30AB-T
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 1924 Stückzahl
- Package
- SOIC-W-16
- Series
- Stromsensoren
Replacement verdict
Compatible functional replacement candidate
The ACS724KMATR-30AB-T is not a direct drop-in replacement for the ACS722LLCTR-05AB-T. While both are galvanically isolated Hall-effect current sensor ICs with analog output and similar SOIC-8 footprints, they differ fundamentally in current sensing range, isolation rating, and supply voltage requirements. The ACS724 offers a wider measurement range and higher isolation, making it suitable for higher-power applications, but it cannot directly substitute the ACS722 in designs optimized for lower current sensing without circuit revalidation.
Current Sensing Range
Validation required
Isolation Voltage Rating
Validation required
Output Type
High match
Supply Voltage
Validation required
Parts at a glance
Part B
ACS722LLCTR-05AB-T
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 7660 Stückzahl
- Package
- SOIC-N-8
- Series
- Stromsensoren
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ACS722LLCTR-05AB-T | ACS724KMATR-30AB-T | Why it matters |
|---|---|---|---|
| Current Sensing Range | ±5 A | ±30 A | Defines the maximum measurable current; a ±5 A sensor cannot replace a ±30 A sensor in high-current applications. |
| Sensitivity | 400 mV/A | 66 mV/A | Determines output voltage per amp of sensed current; different sensitivity requires recalibration of the downstream ADC or control loop. |
| Supply Voltage | 3.0 V to 3.6 V | 4.5 V to 5.5 V | Incompatible supply rails mean the two parts cannot be dropped into the same board without a level shift or regulator change. |
| Isolation Voltage | 2.4 kVrms | 3.0 kVrms | Higher isolation rating provides greater safety margin in high-voltage applications; substitution may violate safety requirements. |
| Bandwidth | 80 kHz | 120 kHz | Affects the maximum frequency of current waveforms that can be accurately tracked; lower bandwidth limits fast transient response. |
| Operating Temperature Range | -40 °C to 150 °C | -40 °C to 125 °C | Determines the environments where the part can operate reliably; the narrower range of the ACS724 may be unsuitable for high-temperature designs. |
| Package | 8-SOIC | 16-SOIC | Different footprints and pin counts prevent direct PCB drop-in replacement without layout redesign. |
| Output Type | Analog voltage, ratiometric | Analog voltage, ratiometric | Both provide ratiometric analog output, but the different sensitivity and supply voltage still require recalibration. |
| Typical Accuracy | ±1.5% typical | ±1.5% typical | Similar accuracy simplifies error budget analysis, but overall system accuracy still depends on sensitivity and range matching. |
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 | ACS724KMATR-30AB-T | ACS722LLCTR-05AB-T |
|---|---|---|
| Part Status | Active | Active |
| For Measuring | AC/DC | AC/DC |
| Sensor Type | Hall Effect, Differential | Hall Effect, Open Loop |
| Current - Sensing | 30A | 5A |
| Number of Channels | 1 | 1 |
| Output | Ratiometric, Voltage | Ratiometric, Voltage |
| Sensitivity | 66mV/A | 264mV/A |
| Frequency | DC ~ 120kHz | DC ~ 80kHz |
| Linearity | ±1% | ±1% |
| Accuracy | ±0.8% | ±3% |
| Voltage - Supply | 4.5V ~ 5.5V | 3V ~ 3.6V |
| Response Time | 4µs | 5µs |
| Current - Supply (Max) | 14mA | 12mA |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 150°C |
| Polarization | Bidirectional | Bidirectional |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the ACS722LLCTR-05AB-T and the ACS724KMATR-30AB-T?
The ACS722LLCTR-05AB-T is a 5 A bidirectional Hall-effect current sensor in a small SOIC-8 package, while the ACS724KMATR-30AB-T is a 30 A bidirectional sensor in a larger SOIC-16 package. The ACS724 also offers higher isolation working voltage and a different sensitivity scale factor.
Are the ACS722LLCTR-05AB-T and ACS724KMATR-30AB-T pin-compatible?
No. The ACS722LLCTR-05AB-T uses an 8-lead SOIC package, and the ACS724KMATR-30AB-T uses a 16-lead SOIC package with different pinouts. They are not drop-in replacements for each other.
What is the measurement range of each device?
The ACS722LLCTR-05AB-T measures bidirectional current up to ±5 A, while the ACS724KMATR-30AB-T measures bidirectional current up to ±30 A. Both are factory-trimmed for their respective ranges.
What supply voltage do these sensors require?
Both the ACS722LLCTR-05AB-T and the ACS724KMATR-30AB-T operate from a single 3.3 V supply. The ACS722 is also available in a 5 V variant, but the specific part number ACS722LLCTR-05AB-T is the 3.3 V version.
What is the sensitivity of each sensor?
The ACS722LLCTR-05AB-T has a typical sensitivity of 264 mV/A. The ACS724KMATR-30AB-T has a typical sensitivity of 66 mV/A. These values are specified for the bidirectional versions with the given supply voltage.
What is the isolation voltage rating for these parts?
The ACS722LLCTR-05AB-T is rated for a dielectric strength of 2.1 kVRMS for 1 minute. The ACS724KMATR-30AB-T is rated for 4.8 kVRMS for 1 minute. Both are UL-recognized and CSA-certified components.
Can the ACS722LLCTR-05AB-T be used in place of the ACS724KMATR-30AB-T for a 20 A application?
No. The ACS722LLCTR-05AB-T has a maximum measurable current of ±5 A, so it cannot be used for a 20 A application. The ACS724KMATR-30AB-T is rated for ±30 A and would be the appropriate choice.
What are the typical applications for each sensor?
The ACS722LLCTR-05AB-T is typically used in low-current applications such as motor control, load detection, and power supplies up to 5 A. The ACS724KMATR-30AB-T is used in higher-current applications such as industrial motor control, inverters, and battery management systems up to 30 A.