A1301 and A1302 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Features and Benefits Description Low-noise output The A1301 and A1302 are continuous-time, ratiometric, linear Fast power-on time Hall-effect sensor ICs. They are optimized to accurately provide Ratiometric rail-to-rail output a voltage output that is proportional to an applied magnetic 4.5 to 6.0 V operation field. These devices have a quiescent output voltage that is Solid-state reliability 50% of the supply voltage. Two output sensitivity options Factory-programmed at end-of-line for optimum are provided: 2.5 mV/G typical for the A1301, and 1.3 mV/G performance typical for the A1302. Robust ESD performance The Hall-effect integrated circuit included in each device includes a Hall circuit, a linear amplifier, and a CMOS Class A output structure. Integrating the Hall circuit and the amplifier on a single chip minimizes many of the problems normally Packages: 3 pin SOT23W (suffix LH), and associated with low voltage level analog signals. 3 pin SIP (suffix UA) High precision in output levels is obtained by internal gain and offset trim adjustments made at end-of-line during the manufacturing process. These features make the A1301 and A1302 ideal for use in position sensing systems, for both linear target motion and rotational target motion. They are well-suited for industrial applications over extended temperature ranges, from 40C to 125C. Two device package types are available: LH, a 3-pin SOT23W type for surface mount, and UA, a 3-pin ultramini SIP for through-hole mount. They are lead (Pb) free (suffix, T) with 100% matte tin plated leadframes. Not to scale Functional Block Diagram V+ VCC To all subcircuits VOUT Out Amp Gain Offset C BYPASS Trim Control GND A1301-DS, Rev. 13 FilterA1301 and Continuous-Time Ratiometric A1302 Linear Hall Effect Sensor ICs Selection Guide 1 Ambient, T Part Number Packing Package Sensitivity (Typical) A 2 A1301ELHLT-T 7-in. tape and reel, 3000 pieces/reel Surface Mount 40C to 85C A1301EUA-T Bulk, 500 pieces/bag SIP 2.5 mV/G A1301KLHLT-T 7-in. tape and reel, 3000 pieces/reel Surface Mount 40C to 125C A1301KUA-T Bulk, 500 pieces/bag SIP A1302ELHLT-T 7-in. tape and reel, 3000 pieces/reel Surface Mount 40C to 85C 3 A1302EUA-T Bulk, 500 pieces/bag SIP 1.3 mV/G A1302KLHLT-T 7-in. tape and reel, 3000 pieces/reel Surface Mount 40C to 125C A1302KUA-T Bulk, 500 pieces/bag SIP 1 Contact Allegro for additional packing options. 2 Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the variant is obsolete and notice has been given. Sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for new design applications because of obsolescence in the near future. Samples are no longer available. Status date change May 4, 2009. Deadline for receipt of LAST TIME BUY orders is November 4, 2009. 3 Variant is in production but has been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for new design applications because obsoles- cence in the near future is probable. Samples are no longer available. Status change: May 4, 2009. Absolute Maximum Ratings Characteristic Symbol Notes Rating Units Supply Voltage V 8V CC Output Voltage V 8V OUT Reverse Supply Voltage V 0.1 V RCC Reverse Supply Voltage V 0.1 V RCC Output Sink Current I 10 mA OUT Range E 40 to 85 C Operating Ambient Temperature T A Range K 40 to 125 C Maximum Junction Temperature T (max) 165 C J Storage Temperature T 65 to 170 C stg 2 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000 www.allegromicro.com