Product Overview
The RedRock RR121 Series is a digital push-pull magnetic sensor leveraging patented Tunneling Magnetoresistance (TMR) technology with integrated CMOS. It is designed for a wide range of applications including medical, industrial, automotive, and consumer electronics, enabling functions such as proximity sensing, rotary sensing, and level detection. The RR121 offers selectable operate sensitivities from 9 G to 70 G and supports omnipolar, unipolar, or bipolar magnetic field responses. It is recognized for its industry-leading low average current drain of 200 nA, high operating frequencies up to 10 kHz, and an extended operating temperature range from -40C to 125C. This series is RoHS & REACH compliant.
Product Attributes
- Brand: RedRock
- Technology: Tunneling Magnetoresistance (TMR)
- Certifications: RoHS & REACH Compliant
- Copyright: 2020
Technical Specifications
| Model | Magnetic Polarity Response | Operate Sensitivity (G) | Release Sensitivity (G) | Switching Frequency (Hz/kHz) | Average Supply Current (nA/A/mA) | Temperature Rating (C) | Supply Voltage (Vdd) | Output Response | Package | Package Body Size (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| RR121-1B13-312 | Omnipolar | 30 | 20 | 2 Hz | 0.20 nA | -40 to +125 | 2.7 - 3.6 | Active Low | LGA-4 | 1.4 x 1.4 x 0.45 |
| RR121-1B13-311 | Omnipolar | 30 | 20 | 2 Hz | 0.20 nA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| RR121-1B53-311 | Omnipolar | 30 | 20 | 250 Hz | 1.44 mA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| RR121-1A23-311 | Omnipolar | 9 | 5 | 10 Hz | 0.24 nA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| RR121-1A53-311 | Omnipolar | 9 | 5 | 250 Hz | 1.44 mA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| RR121-1E73-311 | Omnipolar | 15 | 10 | 2.50 kHz | 8 mA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| RR121-1B93-312 | Omnipolar | 30 | 20 | 10 kHz | 36 mA | -40 to +125 | 2.7 - 3.6 | Active Low | LGA-4 | 1.4 x 1.4 x 0.45 |
| RR121-2A32-364 | Unipolar | 9 | 5 | 20 Hz | 0.28 nA | -40 to +85 | 2.7 - 3.6 | Dual Active Low | Leaded LGA-4 | 1.4 x 1.4 x 0.45 |
| RR121-3C63-311 | Bipolar | -10 | 10 | 500 Hz | 1.70 mA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| RR121-3C73-311 | Bipolar | -10 | 10 | 2.50 kHz | 8 mA | -40 to +125 | 2.7 - 3.6 | Active Low | SOT-23-3 | 2.9 x 1.6 x 1.2 |
| General Specifications | ||||||||||
| Operating Temperature (TOP) | -40C to +125C | |||||||||
| Storage Temperature (TSTG) | -65C to +150C | |||||||||
| Supply Voltage (VDD) | -0.3V to +4.0V | |||||||||
| ESD Level (Human Body Model) | 4000V | |||||||||
| Magnetic Field Exposure | 2000 G | |||||||||
| Push-pull Output (Active Low) (VOUT_PP) | -0.3V to VDD | |||||||||
| Input and Output Current (IIN/IOUT) | -10mA to +10mA | |||||||||
| Output Voltage (High) (VOUTH) | 90% VDD | |||||||||
| Output Voltage (Low) (VOUTL) | 10% VDD | |||||||||
| Power-On Time (tON) | 500 ms (VDD > 2.7V) | |||||||||
| Under-Voltage Lockout Threshold Rising VDD (VUVLO_RISE) | +2.60V | |||||||||
| Under-Voltage Lockout Threshold Falling VDD (VUVLO_FALL) | +2.15V | |||||||||
| Under-Voltage Lockout Hysteresis (VUV_HYST) | +50mV | |||||||||
Applications
- Proximity Detection
- Rotary Sensing
- Fluid Level Detection
- Door & Lid Closure Detection
- Utility Meters
- Portable Medical Devices
- Motor Controllers
- Consumer Electronics
- Wake-Up Microprocessors
2410311322_COTO-RR121-1B13-312_C5734263.pdf
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