Part A
ACS723LLCTR-10AU-T
Allegro 마이크로시스템
- Lifecycle
- Active
- Stock
- 7218 PCS
- Package
- SOIC-8
- Series
- 전류 센서
Replacement verdict
Compatible functional replacement candidate
The ACS723LLCTR-05AB-T and ACS723LLCTR-10AU-T share the same SOIC-8 package, supply voltage range, and galvanically isolated Hall-effect sensing architecture, making them functionally interchangeable in many designs. However, the two variants differ in primary sensed current range and output configuration, so the replacement is viable only when the host application's measurement span and signal-conditioning interface are validated against the target variant.
Current Sensing Range
Not compatible
Output Type
Validation required
Package Type
High match
Supply Voltage
High match
Parts at a glance
Part B
ACS723LLCTR-05AB-T
Allegro 마이크로시스템
- Lifecycle
- Active
- Stock
- 5274 PCS
- Package
- SOIC-8
- Series
- 전류 센서
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 | ACS723LLCTR-10AU-T | Why it matters |
|---|---|---|---|
| Current Sensing Range | ±5 A | ±10 A | Defines the maximum measurable current; a ±5 A device saturates at lower currents than a ±10 A device, so the two are not directly interchangeable in higher-current applications. |
| Sensitivity | 400 mV/A | 200 mV/A | Determines the output voltage per amp of sensed current; different sensitivity changes the ADC scaling and resolution required in the host system. |
| Supply Voltage (VCC) | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Both parts share the same 5 V nominal supply window, so power-rail compatibility is identical. |
| Output Type | Analog voltage, ratiometric | Analog voltage, ratiometric | Both provide a ratiometric analog output, so the signal interface to the downstream ADC is the same. |
| Isolation Voltage | 2.1 kVrms (basic isolation) | 2.1 kVrms (basic isolation) | Galvanic isolation rating is identical, so safety and creepage/clearance requirements are met equally by both parts. |
| Bandwidth | 80 kHz | 80 kHz | Identical bandwidth means both parts respond equally fast to current transients, preserving dynamic performance. |
| Operating Temperature Range | -40 °C to 150 °C | -40 °C to 150 °C | Same temperature range ensures both parts are suitable for the same industrial and automotive environments. |
| Package | 8-lead SOIC | 8-lead SOIC | Identical footprint and pinout allow drop-in PCB replacement without layout changes. |
| Accuracy | ±3% typical (full-scale) | ±3% typical (full-scale) | Matching accuracy means measurement error budgets are equivalent for both devices. |
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 | ACS723LLCTR-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 | 400mV/A | 400mV/A |
| Frequency | DC ~ 80kHz | DC ~ 80kHz |
| Linearity | ±1% | ±1% |
| Accuracy | ±3% | ±3% |
| Voltage - Supply | 5V | 5V |
| Response Time | 5µs | 5µs |
| Current - Supply (Max) | 14mA | 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 key differences between the ACS723LLCTR-05AB-T and ACS723LLCTR-10AU-T?
The ACS723LLCTR-05AB-T is a bidirectional current sensor with a nominal measurement range of ±5 A, while the ACS723LLCTR-10AU-T is a unidirectional current sensor with a nominal measurement range of 0 to 10 A. Both are galvanically isolated Hall-effect sensors in the same SOIC-8 package, but they differ in measurement direction, primary current range, sensitivity, and output voltage characteristics.
What is the sensitivity of each device?
The ACS723LLCTR-05AB-T provides a typical sensitivity of 400 mV/A. The ACS723LLCTR-10AU-T provides a typical sensitivity of 200 mV/A. These values are specified in the Allegro MicroSystems datasheet for the ACS723 family.
What is the supply voltage and isolation rating for these sensors?
Both devices operate from a single 5 V supply and provide basic galvanic isolation. The ACS723 family is rated for a dielectric strength of 2.4 kVRMS for 1 minute per UL 60950-1 and has a working voltage of 297 VRMS or 420 VDC, as specified in the Allegro datasheet.
Can the ACS723LLCTR-05AB-T and ACS723LLCTR-10AU-T be used interchangeably?
No, they are not directly interchangeable. The ACS723LLCTR-05AB-T is bidirectional with a ±5 A range and 400 mV/A sensitivity, while the ACS723LLCTR-10AU-T is unidirectional with a 0–10 A range and 200 mV/A sensitivity. The output voltage swing, quiescent output voltage, and measurement direction differ, so circuit design and firmware scaling must be adjusted accordingly.
What is the quiescent output voltage for each variant?
For the ACS723LLCTR-05AB-T, the quiescent output voltage is typically VCC/2 (2.5 V at 5 V supply) because it is bidirectional. For the ACS723LLCTR-10AU-T, the quiescent output voltage is typically 0.5 V (10% of VCC) because it is unidirectional. These values are specified in the Allegro ACS723 datasheet.
What is the operating temperature range for these components?
Both the ACS723LLCTR-05AB-T and ACS723LLCTR-10AU-T are specified for an operating ambient temperature range of –40 °C to 125 °C, as stated in the Allegro MicroSystems datasheet.
What package do these current sensors use?
Both devices are offered in an 8-pin SOIC package with a nominal body width of 3.9 mm and a height of 1.5 mm. The package is designated as the "LC" suffix in the part number, indicating the SOIC-8 package with a leadframe for high isolation.
Are these sensors suitable for AC and DC current measurement?
The ACS723LLCTR-05AB-T, being bidirectional, can measure both AC and DC currents within its ±5 A range. The ACS723LLCTR-10AU-T, being unidirectional, is intended for DC current measurement only, from 0 to 10 A. Neither device should be used outside its specified measurement range or direction without verifying accuracy and linearity from the datasheet.