Product Overview
The A19350 is a high-accuracy Giant Magnetoresistance (GMR) Wheel Speed and Direction Sensor IC designed for user-friendly two-wire applications requiring precise speed and direction information. It integrates high-sensitivity GMR sensor elements and high-precision BiCMOS circuits on a single silicon chip, offering superior accuracy and low magnetic field operation. The device features an integrated capacitor for enhanced EMC robustness and a SolidSpeed Digital Architecture for advanced algorithms and vibration immunity. It provides flexible orientation for xMR or Hall replacement and boasts an ASIL B(D) rating due to integrated diagnostics and a certified safety design process. The A19350 utilizes a two-wire current source output pulse-width protocol for speed, direction, and ASIL reporting, with built-in EEPROM for device traceability throughout production.
Product Attributes
- Brand: Allegro MicroSystems
- Technology: Giant Magnetoresistance (GMR)
- Safety Rating: ASIL B(D)
- Package Type: 2-Pin SIP (UB package)
- Certifications: ASIL B(D) rating based on integrated diagnostics and certified safety design process
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | Potential between pin 1 and pin 2 | 4 | 24 | V | |
| Reverse Supply Voltage | VRCC | 18 | V | |||
| Operating Ambient Temperature | TA | 40 | 150 | C | ||
| Maximum Junction Temperature | TJ(max) | 165 | C | |||
| Storage Temperature | Tstg | 65 | 170 | C | ||
| Nominal Capacitance | CSUPPLY | Connected between pin 1 and pin 2 | 2.2 | nF | ||
| Supply Current (Low-current state) | ICC(LOW) | 5.9 | 7 | 8.4 | mA | |
| Supply Current (High-current state) | ICC(HIGH) | 12 | 14 | 16 | mA | |
| Output Rise/Fall Time | tr, tf | Voltage measured at terminal 2 in Figure 2; RL = 100 , CL = 10 pF, measured between 10% and 90% of signal | 2 | 4 | s | |
| Power-On Time | tPO | VCC > VCC(min) as connected in Figure 1 | 1 | ms | ||
| Pulse-Width Off Time | tW(PRE) | 38 | 45 | 52 | s | |
| Forward Pulse Width | tW(FWD) | 76 | 90 | 104 | s | |
| Reverse Pulse Width | tW(REV) | 153 | 180 | 207 | s | |
| Operating Frequency, Forward Rotation | fFWD | 0 | 3.9 | kHz | ||
| Operating Frequency, Reverse Rotation | fREV | 0 | 2.4 | kHz | ||
| Operating Differential Magnetic Input (peak-to-peak) | BDIFF(pk-pk) | 5 | G | |||
| Repeatability | ErrE | Constant air gap, temperature, and target speed. Sinusoidal input signal. Greater than 1000 output edges captured. | 0.3 | % | ||
| Package Thermal Resistance | RJA | Single-layer PCB with copper limited to solder pads | 213 | C/W | ||
| Part Number | Packing | Example: A19350LUBATN-FBE (Tape and Reel, 4000 pieces per reel) | ||||
2410251539_ALLEGRO-A19350LUBBTN-RBE_C2923671.pdf
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