Part A
ACS722LLCTR-05AB-T
Allegro 마이크로시스템
- Lifecycle
- Active
- Stock
- 7660 PCS
- Package
- SOIC-N-8
- Series
- 전류 센서
Replacement verdict
Compatible functional replacement candidate
The ACS722LLCTR-10AU-T and ACS722LLCTR-05AB-T share the same ACS722 family platform, SOIC-8 package, supply voltage range, and operating temperature range, making them mechanically and electrically compatible at the board level. However, they differ in primary sensed current range and output configuration, so the ACS722LLCTR-05AB-T is not a direct drop-in substitute for the ACS722LLCTR-10AU-T in applications that require the full 10 A sensing range or unidirectional output behavior. Designers must validate measurement range, output polarity requirements, and sensitivity against the target application before substituting.
Current Sensing Range
Not compatible
Output Type
Not compatible
Package Type
High match
Supply Voltage
High match
Parts at a glance
Part B
ACS722LLCTR-10AU-T
Allegro 마이크로시스템
- Lifecycle
- Active
- Stock
- 4978 PCS
- Package
- SOIC-N-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 | ACS722LLCTR-10AU-T | ACS722LLCTR-05AB-T | Why it matters |
|---|---|---|---|
| Current Sensing Range | ±10 A | ±5 A | Defines the maximum measurable current; a lower range part cannot substitute where higher currents must be sensed without saturating. |
| Sensitivity | 400 mV/A | 800 mV/A | Determines output voltage per amp of sensed current; different sensitivity changes the ADC scaling and resolution of the measurement. |
| Output Type | Unidirectional (0 to VCC) | Bidirectional (VCC/2 centered) | Unidirectional parts only measure positive current, while bidirectional parts measure both polarities; this affects circuit topology and signal conditioning. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Both devices require the same regulated 3.3 V rail, so power supply design is compatible between them. |
| Isolation Voltage | 2.4 kVrms | 2.4 kVrms | Galvanic isolation rating must meet the safety requirements of the application; identical ratings mean equivalent safety performance. |
| Bandwidth | 80 kHz | 80 kHz | Sets the maximum signal frequency the sensor can accurately track; matching bandwidth preserves dynamic response in the application. |
| Package | SOIC-8 | SOIC-8 | Footprint and pinout compatibility allow a drop-in replacement on the same PCB without layout changes. |
| Operating Temperature Range | -40 °C to 150 °C | -40 °C to 150 °C | Both parts support the same thermal environment, ensuring equivalent reliability across the application temperature range. |
| Accuracy | ±3% typical | ±3% typical | Measurement accuracy directly affects system precision; identical accuracy means comparable performance in the end application. |
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-05AB-T | ACS722LLCTR-10AU-T |
|---|---|---|
| Part Status | Active | Active |
| For Measuring | AC/DC | DC |
| Sensor Type | Hall Effect, Open Loop | Hall Effect, Open Loop |
| Current - Sensing | 5A | 10A |
| Number of Channels | 1 | 1 |
| Output | Ratiometric, Voltage | Ratiometric, Voltage |
| Sensitivity | 264mV/A | 264mV/A |
| Frequency | DC ~ 80kHz | DC ~ 80kHz |
| Linearity | ±1% | ±1% |
| Accuracy | ±3% | ±3% |
| Voltage - Supply | 3V ~ 3.6V | 3V ~ 3.6V |
| Response Time | 5µs | 5µs |
| Current - Supply (Max) | 12mA | 12mA |
| Operating Temperature | -40°C ~ 150°C | -40°C ~ 150°C |
| Polarization | Bidirectional | Unidirectional |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the ACS722LLCTR-10AU-T and the ACS722LLCTR-05AB-T?
The ACS722LLCTR-10AU-T is a 10 A unidirectional current sensor with an analog output, while the ACS722LLCTR-05AB-T is a 5 A bidirectional current sensor with an analog output. Both are galvanically isolated Hall-effect sensors in the same SOIC-8 package, but they differ in current range, directionality, and sensitivity.
Are the ACS722LLCTR-10AU-T and ACS722LLCTR-05AB-T pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC package with the same pinout, so they are pin-compatible. However, pin compatibility does not guarantee functional interchangeability without validating the measurement range, directionality, and sensitivity requirements of the target application.
What is the sensitivity of each device?
The ACS722LLCTR-10AU-T has a typical sensitivity of 132 mV/A. The ACS722LLCTR-05AB-T has a typical sensitivity of 264 mV/A. These values are specified in the respective Allegro MicroSystems datasheets.
What is the difference between unidirectional and bidirectional current sensing in these parts?
The ACS722LLCTR-10AU-T is unidirectional, meaning it is designed to measure current flowing in one direction only, with an output that swings from near zero to the positive full-scale range. The ACS722LLCTR-05AB-T is bidirectional, meaning it measures current in both directions, with a quiescent output typically at mid-supply and the output swinging above and below that point depending on current polarity.
Can the ACS722LLCTR-10AU-T directly replace the ACS722LLCTR-05AB-T in an existing design?
Not without design validation. Although the packages and pinouts are the same, the current range, directionality, sensitivity, and quiescent output voltage differ. A unidirectional 10 A part cannot directly replace a bidirectional 5 A part without changes to the signal conditioning, firmware scaling, and possibly the measurement range requirements.
What is the supply voltage and isolation rating for both devices?
Both the ACS722LLCTR-10AU-T and ACS722LLCTR-05AB-T operate from a single 3.3 V supply and provide galvanic isolation. The isolation rating is specified in the Allegro MicroSystems datasheet for the ACS722 family, which should be consulted for the exact working voltage and withstand voltage ratings.
Which device is better for low-current measurement accuracy?
The ACS722LLCTR-05AB-T is generally better suited for lower-current measurement because its 5 A full-scale range and higher sensitivity of 264 mV/A provide finer resolution per ampere than the 10 A unidirectional device with 132 mV/A sensitivity. The bidirectional capability also allows measurement of current in both directions around zero.
Are both devices qualified for automotive or industrial applications?
Both the ACS722LLCTR-10AU-T and ACS722LLCTR-05AB-T are part of the Allegro MicroSystems ACS722 family. The specific qualification status, operating temperature range, and reliability data should be verified from the official Allegro datasheet and any applicable qualification reports before use in automotive or industrial designs.