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Specifications
Sample Frequency:
250Hz
Operation Points:
3mT
Operating Current:
1.3uA
Release Points:
2mT
Operating Temperature:
-40℃~+85℃
Output Current:
3mA
Voltage - Supply:
1.7V~5.5V
Mfr. Part #:
CT8132BL-IS3
Package:
SOT-23-3
Key Attributes
Model Number:
CT8132BL-IS3
Product Description
Product Overview
The CT813x series of omnipolar tunnel magnetoresistance (TMR) digital switches are designed for consumer and industrial applications, offering superior sensing performance with Allegro's XtremeSense TMR technology and integrated CMOS process. These devices provide stable magnetic operation, ultra-low power consumption as low as 110 nA, and sensitivity to magnetic fields down to 9 G. Available in compact 4-lead LGA and industry-standard 3-lead SOT-23 packages, they are ideal for battery-operated products, applications with large air gaps, and high-volume manufacturing.
Product Attributes
- Brand: Allegro
- Technology: XtremeSense TMR
- Material: Integrated CMOS
- Certifications: Not specified
- Origin: Not specified
Technical Specifications
| Part Number | Operating Temp Range (C) | Sensor Type | Output | BOP (G) | BRP (G) | fS | Package | Packing |
|---|---|---|---|---|---|---|---|---|
| CT8131BV-IL4 | 40 to 85 | Omnipolar | Open Drain | 30 | 20 | 2 Hz | 4-lead LGA | Tape and Reel |
| CT8131BV-HL4 | 40 to 125 | Omnipolar | Open Drain | 30 | 20 | 2 Hz | 4-lead LGA | Tape and Reel |
| CT8131BV-IS3 | 40 to 85 | Omnipolar | Open Drain | 30 | 20 | 2 Hz | 3-lead SOT23 | Tape and Reel |
| CT8131BV-HS3 | 40 to 125 | Omnipolar | Open Drain | 30 | 20 | 2 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132BH-IL4 | 40 to 85 | Omnipolar | Push-Pull | 30 | 20 | 10 kHz | 4-lead LGA | Tape and Reel |
| CT8132BH-HL4 | 40 to 125 | Omnipolar | Push-Pull | 30 | 20 | 10 kHz | 4-lead LGA | Tape and Reel |
| CT8132BH-IS3 | 40 to 85 | Omnipolar | Push-Pull | 30 | 20 | 10 kHz | 3-lead SOT23 | Tape and Reel |
| CT8132BH-HS3 | 40 to 125 | Omnipolar | Push-Pull | 30 | 20 | 10 kHz | 3-lead SOT23 | Tape and Reel |
| CT8132BL-IS3 | 40 to 85 | Omnipolar | Push-Pull | 30 | 20 | 250 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132BL-HS3 | 40 to 125 | Omnipolar | Push-Pull | 30 | 20 | 250 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132BV-IL4 | 40 to 85 | Omnipolar | Push-Pull | 30 | 20 | 2 Hz | 4-lead LGA | Tape and Reel |
| CT8132BV-HL4 | 40 to 125 | Omnipolar | Push-Pull | 30 | 20 | 2 Hz | 4-lead LGA | Tape and Reel |
| CT8132BV-IS3 | 40 to 85 | Omnipolar | Push-Pull | 30 | 20 | 2 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132BV-HS3 | 40 to 125 | Omnipolar | Push-Pull | 30 | 20 | 2 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132DM-IS3 | 40 to 85 | Omnipolar | Push-Pull | 15 | 10 | 2.5 kHz | 3-lead SOT23 | Tape and Reel |
| CT8132DM-HS3 | 40 to 125 | Omnipolar | Push-Pull | 15 | 10 | 2.5 kHz | 3-lead SOT23 | Tape and Reel |
| CT8132EK-IL4 | 40 to 85 | Omnipolar | Push-Pull | 70 | 50 | 10 Hz | 4-lead LGA | Tape and Reel |
| CT8132EK-IS3 | 40 to 85 | Omnipolar | Push-Pull | 70 | 50 | 10 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132EK-HS3 | 40 to 125 | Omnipolar | Push-Pull | 70 | 50 | 10 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132SK-IL4 | 40 to 85 | Omnipolar | Push-Pull | 9 | 5 | 10 Hz | 4-lead LGA | Tape and Reel |
| CT8132SK-HL4 | 40 to 125 | Omnipolar | Push-Pull | 9 | 5 | 10 Hz | 4-lead LGA | Tape and Reel |
| CT8132SK-IS3 | 40 to 85 | Omnipolar | Push-Pull | 9 | 5 | 10 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132SK-HS3 | 40 to 125 | Omnipolar | Push-Pull | 9 | 5 | 10 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132SL-IS3 | 40 to 85 | Omnipolar | Push-Pull | 9 | 5 | 250 Hz | 3-lead SOT23 | Tape and Reel |
| CT8132SL-HS3 | 40 to 125 | Omnipolar | Push-Pull | 9 | 5 | 250 Hz | 3-lead SOT23 | Tape and Reel |
Applications
- IoT devices
- Smartphones, tablets, and laptops
- Door or lid closure
- Reed switch replacement
- Tamper-proofing for utility smart meters
- Fluid level sensing/detection
- Proximity detection
- Motor controllers
- Gimbals for camera systems in drones/UAVs
- Industrial machinery/robots
- Medical devices
Key Features and Benefits
- Stable magnetic operation over the operating temperature range
- Ultra-low power consumption (~110 nA @ VDD = 1.8 V and fS = 2 Hz)
- Supports magnetic fields down to 9 G for large air gap requirements
- Available in 4-lead LGA (1.45 mm 1.45 mm 0.44 mm) for small form factor and low profile
- Available in industry-standard 3-lead SOT-23 package
- Digital CMOS outputs (Push-pull, Open drain)
- Undervoltage lockout (UVLO)
General Technical Specifications
| Characteristic | Symbol | Notes | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage Range | VDD | 1.7 | 3.3 | 5.5 | V | |
| Output Voltage Range | VOUT | 0 | VDD | V | ||
| Operating Magnetic Flux | BOP | CT8132Sx | 450 | G | ||
| Output Current | IOUT | 3.0 | mA | |||
| Bypass Capacitor | CBYP | 1.0 | F | |||
| Industrial Operating Ambient Temperature | TA | 40 | 25 | 85 | C | |
| Extended Industrial Operating Ambient Temperature | TA | 40 | 25 | 125 | C | |
| Push-Pull Output Voltage High | VOH | IOUT = 2 mA | 0.9 VDD | V | ||
| Push-Pull Output Voltage Low | VOL | IOUT = 2 mA | 0.1 VDD | V | ||
| Open Drain Output Voltage High | VOH | 5.5 | V | |||
| Open Drain Output Voltage Low | VOL | IOUT 20 mA | 0 | 0.5 | V | |
| High Output Leakage Current | ILEAK | VOH = 5.5 V, BOP = 0 | 20 | pA | ||
| Power-On Time | tON | VDD 1.7 V | 50 | 75 | s | |
| Active Mode Time | tACTIVE | 2.6 | s | |||
| Undervoltage Lockout Rising | VUVLO | 1.60 | 1.64 | V | ||
| Undervoltage Lockout Falling | VDD | 1.44 | 1.53 | V | ||
| UVLO Hysteresis | VUV_HYS | 70 | mV | |||
| Average Supply Current | IDD(AVG) | t 10 seconds | 140 | 900 | nA | |
| Average Supply Current (1.8V) | IDD(AVG)_1.8V | t 10 seconds, VDD = 1.8 V | 110 | 900 | nA | |
| Sampling Frequency | fS1 | 1 | 2 | 4 | Hz | |
| Idle Mode Time | tIDLE1 | fS = 2 Hz | 250 | 500 | 1000 | ms |
2504101957_ALLEGRO-CT8132BL-IS3_C25624943.pdf
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