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Specifications
Standby Current:
6mA
working temperature:
-40℃~+125℃
Current Range:
±30A
Voltage - Supply:
3.3V
Band Width:
1MHz
Current Terminal Resistance:
1mΩ
Response Time (tr):
300ns
Sensitivity:
33.3mV/A
Bidirectional Current Detection:
Support
Mfr. Part #:
CT427-HSN830MR
Package:
SOIC-8
Key Attributes
Model Number:
CT427-HSN830MR
Product Description
Product Overview
The CT427 is a high-accuracy, integrated contact current sensor utilizing Allegro's XtremeSense TMR technology. It offers ultra-low noise and a total output error of less than 1.0% full-scale across eight selectable current ranges up to 65 A. The device provides a linear analog output voltage and features integrated overcurrent detection (OCD) with a fault output pin (FLT). Ideal for industrial, consumer, and automotive applications, it ensures high precision current measurements with a fast 300 ns response time and immunity to common mode fields.
Product Attributes
- Brand: Allegro
- Technology: XtremeSense TMR
- Certifications: UL/IEC 62368-1, UL1577, AEC-Q100 Grade 1
- Compliance: Green, RoHS compliant
- Package: 8-lead SOIC
Technical Specifications
| Feature | Specification | Details |
|---|---|---|
| Product Name | CT427 | XtremeSense TMR Current Sensor |
| Current Ranges | 8 Ranges | 0 to 20 A, 20 A, 0 to 30 A, 30 A, 0 to 50 A, 50 A, 0 to 65 A, 65 A |
| Max Current Handling (CCC) | Up to 65 A | |
| Total Output Error | < 1.0% FS | |
| Bandwidth | 1 MHz | |
| Output Response Time | ~300 ns | |
| Current Consumption | ~6.0 mA | |
| Common Mode Field Rejection | -54 dB | |
| Overcurrent Detection (OCD) | Integrated | Output to FLT pin |
| Fault Output (FLT) | Open drain, active low digital signal | |
| Supply Voltage | 3.0 to 3.6 V | Recommended: 3.3 V |
| Noise (100 kHz BW) | 9.5 to 19.0 mARMS | Varies by current range |
| Isolation Voltage (Rated) | 3.5 kVRMS | |
| Working Voltage (Basic Isolation) | 560 VRMS | |
| Working Voltage (Reinforced Isolation) | 280 VRMS | |
| Operating Temperature | 40C to 125C | |
| Package Dimensions | 4.89 mm 6.00 mm 1.62 mm | 8-lead SOIC |
| Model Examples | CT427-HSN820MR | 20 A, 50 mV/A, 8-lead SOIC, Tape and Reel |
| Model Examples | CT427-HSN865DR | 0 to 65 A, 30.8 mV/A, 8-lead SOIC, Tape and Reel |
| Model Examples | CT427-ASN850MR | 50 A, 20 mV/A, Grade 1, 8-lead SOIC, Tape and Reel |
2509301015_ALLEGRO-CT427-HSN830MR_C22442738.pdf
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