Product Overview
The A1230 is a dual-channel, bipolar Hall-effect switch designed for speed and direction signal processing. It features two Hall-effect sensing elements precisely aligned for accurate mechanical location, eliminating manufacturing hurdles in fine-pitch detection. This highly sensitive, temperature-stable device is ideal for ring magnet-based speed and direction systems in harsh automotive and industrial environments. Its outputs are out of phase, providing quadrature signals for easy processing. The A1230 incorporates a patented chopper stabilization technique for offset cancellation and stable operation across specified temperature and voltage ranges, ensuring industry-leading digital output jitter performance critical for high-performance motor commutation.
Product Attributes
- Brand: Allegro MicroSystems
- Certifications: AEC-Q100 automotive qualified
- Packages: 4-Pin SIP (K), 8-Pin SOIC (L)
- Temperature Range: 40C to 150C
- Lead Finish: 100% matte-tin-plated leadframe (Pb-free)
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| ELECTRICAL CHARACTERISTICS | ||||||
| Supply Voltage | VCC | Operating; TA 150C | 3.3 | 18 | V | |
| Output Leakage Current | IOUTPUT(OFF) | Either output | < 1 | 10 | A | |
| Supply Current | ICC(OFF) | B < BRP(A) ,B < BRP(B) | 3.5 | 6.0 | mA | |
| Supply Current | ICC(ON) | B > BOP(A) ,B > BOP(B) | 3.5 | 6.0 | mA | |
| Low Output Voltage | VOUTPUT(ON) | Both outputs; IOUTPUT(SINK) = 20 mA; B > BOP(A), B > BOP(B) | 160 | 500 | mV | |
| Output Sink Current | IOUTPUT(SINK) | 20 | mA | |||
| Output Sink Current, Continuous | IOUTPUT(SINK)C | TJ < TJ(max) ,VOUTPUT = 12 V | 70 | mA | ||
| Output Sink Current, Peak | IOUTPUT(SINK)P | t < 3 seconds | 220 | mA | ||
| Chopping Frequency | fC | 780 | kHz | |||
| Output Rise Time | tr | CLOAD = 20 pF, RLOAD = 820 | 1.8 | s | ||
| Output Fall Time | tf | CLOAD = 20 pF, RLOAD = 820 | 1.2 | s | ||
| Power-On Time | tON | B > 40 G or B < 40 G | 15 | s | ||
| Power-Off Time | tOFF | B > 40 G or B < 40 G | 25 | s | ||
| Power-On State | POS | B = 0 G | Low | |||
| TRANSIENT PROTECTION CHARACTERISTICS | ||||||
| Supply Zener Voltage | VZ | ICC = 9 mA, TA = 25C | 28 | V | ||
| Supply Zener Current | IZ | VS = 28 V | 9.0 | mA | ||
| Reverse-Battery Current | IRCC | VRCC = 18 V, TJ < TJ(max) | 2 | 15 | mA | |
| MAGNETIC CHARACTERISTICS | ||||||
| Operate Point | BOP(A), BOP(B) | 7 | 30 | G | ||
| Release Point | BRP(A), BRP(B) | 30 | 7 | G | ||
| Hysteresis | BHYS(A), BHYS(B) | BOP(A) BRP(A), BOP(B) BRP(B) | 5 | 14 | 35 | G |
| Symmetry | SYMA, SYMB | Channel A, Channel B, BOP(A) + BRP(A), BOP(B) + BRP(B) | 35 | 35 | G | |
| Operate Symmetry | SYMAB(OP) | BOP(A) BOP(B) | 25 | 25 | G | |
| Release Symmetry | SYMAB(RP) | BRP(A) BRP(B) | 25 | 25 | G | |
| THERMAL CHARACTERISTICS | ||||||
| Package Thermal Resistance | RJA | Package K, 1-layer PCB with copper limited to solder pads | 177 | C/W | ||
| Package Thermal Resistance | RJA | Package L-8 pin, 1-layer PCB with copper limited to solder pads | 140 | C/W | ||
| Package Thermal Resistance | RJA | Package L-8 pin, 4-layer PCB based on JEDEC standard | 80 | C/W | ||
2007142135_ALLEGRO-A1230LK-T_C696500.pdf
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