Product Overview
The Allegro CT417 is a high-bandwidth, ultra-low noise integrated contact current sensor utilizing XtremeSense TMR technology for high-accuracy current measurements. It supports eight current ranges, with the integrated current-carrying conductor (CCC) handling up to 65 A and providing a linear analog output voltage. The device boasts a total output error of less than 1.0% full-scale (FS), a 300 ns output response time, and immunity to common mode fields. It features integrated overcurrent detection (OCD) with a fault output on the FLT pin, an open-drain, active-low digital signal. The CT417 is offered in an industry-standard, green, and RoHS-compliant 8-lead SOIC package. Applications include solar/power inverters, UPS, SMPS, telecom power supplies, motor control, power utility meters, and overcurrent fault protection.
Product Attributes
- Brand: Allegro MicroSystems
- Technology: XtremeSense TMR
- Package: 8-lead SOIC
- Certifications: UL/IEC 62368-1, UL1577
- Compliance: Green, RoHS compliant
- Automotive Qualification: AEC-Q100 Grade 1
Technical Specifications
| Feature | Specification | Details |
|---|---|---|
| Product Name | CT417 | Integrated Contact Current Sensor |
| Current Carrying Conductor (CCC) Max Current | 65 A | |
| Total Output Error | < 1.0% FS | |
| Output Response Time | ~300 ns | |
| Current Consumption | ~6.0 mA | |
| Bandwidth | 1 MHz | |
| Supply Voltage | 3.0 to 3.6 V | Recommended: 3.3 V |
| Common Mode Field Immunity | -40 dB | |
| Overcurrent Detection (OCD) | Integrated | Output to FLT pin |
| Fault Output (FLT) | Open drain, active low digital signal | |
| Noise (Typical @ 100 kHz BW) | 9.5 to 19.0 mARMS | Varies by model |
| Isolation Voltage (Rated) | 2.5 kVRMS | |
| Working Voltage (Basic Isolation) | 560 VRMS | |
| Working Voltage (Reinforced Isolation) | 280 VRMS | |
| Package Dimensions | 8-lead SOIC | 4.89 mm x 6.00 mm x 1.62 mm (Typ.) |
| Operating Temperature Range | -40C to 125C | Extended Industrial / Automotive |
| Model Variants | Current Range (IPMAX) | Sensitivity (mV/A) |
| CT417-HSN820MR / CT417-ASN820MR | 20 A | 50 |
| CT417-HSN830MR / CT417-ASN830MR | 30 A | 33.3 |
| CT417-HSN850MR-1 / CT417-HSN850MR / CT417-ASN850MR | 40 A / 50 A | 26.4 / 20 |
| CT417-HSN865MR / CT417-ASN865MR | 65 A | 15.4 |
| CT417-HSN820DR / CT417-ASN820DR | 0 to 20 A | 100 |
| CT417-HSN830DR / CT417-ASN830DR | 0 to 30 A | 66.7 |
| CT417-HSN850DR / CT417-ASN850DR | 0 to 50 A | 40 |
| CT417-HSN865DR / CT417-ASN865DR | 0 to 65 A | 30.8 |
| Power-On Time (tON) | 100 s | Typical |
| Response Time (tRESPONSE) | ~300 ns | |
| Rise Time (tRISE) | 200 ns | Typical |
| Propagation Delay (tDELAY) | 250 ns | Typical |
| Undervoltage Lockout (UVLO) | 2.45 V (Falling) / 2.50 V (Rising) |
2504101957_ALLEGRO-CT417-HSN820DR_C22442736.pdf
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