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Specifications
Mfr. Part #:
A1389LUA-9-T
Package:
TO-92S
Key Attributes
Model Number:
A1389LUA-9-T
Product Description
Product Overview
The Allegro A1388 and A1389 are high-accuracy, temperature-stable linear Hall-effect sensor ICs designed for demanding applications requiring precise displacement and angular position sensing. These devices feature non-volatile memory for end-of-line optimization of sensitivity and quiescent voltage output (QVO), ensuring consistent performance across an extended operating temperature range of 40C to 150C. Available in miniature surface-mount and through-hole packages, they are ideal for automotive and industrial applications.
Product Attributes
- Brand: Allegro
- Technology: BiCMOS monolithic circuit
- Lead Plating: 100% matte-tin leadframe plating
- Certifications: Lead (Pb) free
Technical Specifications
| Feature | Specification | Notes |
|---|---|---|
| Supply Voltage | 5.0 V | Operation |
| Operating Temperature Range | 40C to 150C | Ambient Temperature (TA) |
| Quiescent Voltage Output (QVO) | Adjusted around 50% of supply voltage | Ratiometric |
| Sensitivity | A1388: 2.5 mV/G (typ.) A1389: 9 mV/G (typ.) | Models vary |
| Output Type | Analog Voltage Output | Proportional to magnetic field |
| Chopping Frequency | 400 kHz (typ.) | Minimizes QVO drift |
| Undervoltage Lockout (UVLO) | VUVLOHI: 3 V (max.) VUVLOLO: 2.5 V (min.) | Device powers on/off thresholds |
| Output Voltage Clamps | VCLPHIGH: 4.35 - 4.65 V VCLPLOW: 0.40 - 0.70 V | Short-circuit diagnostic capabilities (at 25C, B = 400 G, RL = 10 k) |
| Sensitivity Temperature Coefficient (TCSens) | 0.08 - 0.16 %/C | Programmed at 150C relative to 25C |
| Linearity Sensitivity Error (LinERR) | 1.5 % (max.) | |
| Symmetry Sensitivity Error (SymERR) | 1.5 % (max.) | |
| Ratiometry Error | 1.5 % (max.) | For QVO, Sensitivity, and Clamp Voltages |
| Package Options | LH: 3-pin SOT-23-W (2 mm x 3 mm x 1 mm) UA: 3-pin Ultramini SIP (1.5 mm x 4 mm x 3 mm) | Surface-mount and through-hole |
| Package Thermal Resistance | LH (1-layer PCB): 228 C/W LH (2-layer PCB): 110 C/W UA (1-layer PCB): 165 C/W | |
| Part Number Examples | A1388LLHLX-2-T (SOT-23W, 2.5 mV/G) A1388LUA-2-T (SIP, 2.5 mV/G) A1389LLHLX-9-T (SOT-23W, 9 mV/G) A1389LUA-9-T (SIP, 9 mV/G) A1389LLHLX-RP9-T (SOT-23W, -9 mV/G) |
1811141123_ALLEGRO-A1389LUA-9-T_C150823.pdf
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