A1301 and A1302 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Features and Benefits The A1301 and A1302 are continuous-time, ratiometric, linear Hall-effect sensor ICs. They are optimized to accurately provide a voltage output that is proportional to an applied magnetic field. These devices have a quiescent output voltage that is 50% of the supply voltage. Two output sensitivity options are provided: 2.5 mV/G typical for the A1301, and 1.3 mV/G typical for the A1302. Low-noise output Fast power-on time Ratiometric rail-to-rail output 4.5 to 6.0 V operation Solid-state reliability Factory-programmed at end-of-line for optimum performance ▪ 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 associated with low voltage level analog signals. High precision in output levels is obtained by internal gain and offset trim adjustments made at end-of-line during the manufacturing process. Packages: 3-pin SOT23W (suffix LH), and 3-pin SIP (suffix UA) 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 –40°C to 125°C. 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. Functional Block Diagram V+ CBYPASS Trim Control

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Selection Guide Part Number 7-in. tape and reel, 3000 pieces/reel 7-in. tape and reel, 3000 pieces/reel Surface Mount 7-in. tape and reel, 3000 pieces/reel Surface Mount *Contact Allegro™ for additional packing options. Absolute Maximum Ratings Characteristic Supply Voltage Output Voltage Reverse Supply Voltage Reverse Output Voltage Output Sink Current Operating Ambient Temperature Maximum Junction Temperature Storage Temperature Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000;...

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Pin-out Drawings Terminal List Symbol VCC VOUT GND Description Connects power supply to chip Output from circuit Ground Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs DEVICE CHARACTERISTICS over operating temperature range, TA, and VCC = 5 V, unless otherwise noted Characteristic Symbol Test Conditions Min. Electrical Characteristics Running, TJ < 165°C 4.5 Supply Voltage VCC Supply Current ICC Output open – VOUT(High) ISOURCE = –1 mA, Sens = nominal 4.65 Output Voltage – VOUT(Low) ISINK = 1 mA, Sens = nominal Output Bandwidth BW – VCC(min) to 0.95 VOUT; B = ±1400 G; Power-On Time tPO – Slew rate = 4.5 V/μs to 4.5 V/100 ns Output Resistance ROUT ISINK ≤ 1 mA, ISOURCE ≥ –1 mA – External output low pass...

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Characteristic Definitions Quiescent Output Voltage. In the quiescent state (no significant magnetic field: B = 0), the output, VOUTQ, equals one half of the supply voltage, VCC, throughout the entire operating ranges of VCC and ambient temperature, TA. Due to internal component tolerances and thermal considerations, there is a tolerance on the quiescent output voltage, ∆VOUTQ, which is a function of both ∆VCC and ∆TA. For purposes of specification, the quiescent output voltage as a function of temperature, ∆VOUTQ(∆TA), is defined as:...

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Typical Characteristics (30 pieces, 3 fabrication lots) 1301 Device Sensitivity vs. Ambient Temperature 1302 Device Sensitivity vs. Temperature 1.40 1301 Device VOUTQ vs. Ambient Temperature 1302 Device VOUTQ vs. Ambient Temperature 1301 Device Sensitivity vs. Supply Voltage 1302 Device Sensitivity vs. Supply Voltage 1.7 Continued on the next page... Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Typical Characteristics, continued (30 pieces, 3 fabrication lots) 1302 Device VOUTQ vs. Supply Voltage 1301 Device VOUTQ vs. Supply Voltage 3.5 Output Voltage (V) 1302 Device LIN+ and LIN– vs. Supply Voltage 1301 Device LIN+ and LIN– vs. Supply Voltage 100.4 1302 Device Symmetry vs. Supply Voltage 1301 Device Symmetry vs. Supply Voltage 100.5 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs 0.95 Seating Plane Gauge Plane PCB Layout Reference View Branded Face For Reference Only; not for tooling use (reference dwg. 802840) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown A Standard Branding Reference View N = Last two digits of device part number T = Temperature code Active Area Depth, 0.28 mm REF Reference land pattern layout All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary...

Continuous-Time Ratiometric Linear Hall Effect Sensor ICs 10° Mold Ejector Pin Indent Branded Face D Standard Branding Reference View = Supplier emblem N = Last three digits of device part number For Reference Only; not for tooling use (reference DWG-9065) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown +0.05 0.43 –0.07 A Dambar removal protrusion (6X) Gate and tie bar burr area Active Area Depth, 0.50 mm REF Branding scale and appearance at supplier discretion Hall element...