A1301 and A1302 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs Not for New Design These parts are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Date of status change: December 1, 2015 Recommended Substitutions: For existing customer transition, and for new customers or new applications, contact the factory. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. Allegro MicroSystems, LLC reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. A1301 and A1302 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs DESCRIPTION FEATURES AND BENEFITS • • • • • • 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 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. 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) 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. Not to scale V+ To all subcircuits Amp Filter VCC Gain Out Offset CBYPASS Trim Control GND Functional Block Diagram A1301-DS, Rev. 21 VOUT Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 SPECIFICATIONS Selection Guide Packing* Package Ambient, TA Bulk, 500 pieces/bag SIP –40ºC to 85ºC A1301KLHLT-T 7-in. reel, 3000 pieces/reel Surface Mount A1301KLHLX-T 13-in. reel, 10000 pieces/reel Surface Mount Part Number A1301EUA-T A1301KUA-T Bulk, 500 pieces/bag SIP A1302ELHLT-T 7-in. reel, 3000 pieces/reel Surface Mount A1302ELHLX-T 13-in. reel, 10000 pieces/reel Surface Mount A1302KLHLT-T 7-in. reel, 3000 pieces/reel Surface Mount A1302KLHLX-T 13-in. reel, 10000 pieces/reel Surface Mount A1302KUA-T Bulk, 500 pieces/bag SIP Sensitivity (Typical) 2.5 mV/G –40ºC to 125ºC –40ºC to 85ºC 1.3 mV/G –40ºC to 125ºC *Contact Allegro™ for additional packing options. Absolute Maximum Ratings Characteristic Symbol Supply Voltage Notes VCC Rating Units 8 V Output Voltage VOUT 8 V Reverse Supply Voltage VRCC –0.1 V Reverse Output Voltage VROUT –0.1 V IOUT 10 mA Range E –40 to 85 ºC Range K –40 to 125 ºC Output Sink Current Operating Ambient Temperature TA Maximum Junction Temperature TJ(max) 165 ºC Tstg –65 to 170 ºC Storage Temperature 3 1 2 Package LH SOT23W Pin-out Diagram Terminal List Symbol VCC VOUT GND Number Package LH Package UA 1 1 2 3 3 2 1 2 3 Package UA, 3-Pin SIP Pin-out Diagram 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 2 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 DEVICE CHARACTERISTICS over operating temperature range, TA, and VCC = 5 V, unless otherwise noted Characteristic Symbol Test Conditions Min. Typ. Max. Units Electrical Characteristics Supply Voltage VCC Running, TJ < 165°C Supply Current ICC Output open Output Voltage Output Bandwidth Power-On Time Output Resistance Wide Band Output Noise, rms VOUT(High) ISOURCE = –1 mA, Sens = nominal VOUT(Low) ISINK = 1 mA, Sens = nominal BW 4.5 – 6 V – – 11 mA 4.65 4.7 – V – 0.2 0.25 V – 20 – kHz VCC(min) to 0.95 VOUT; B = ±1400 G; Slew rate = 4.5 V/µs to 4.5 V/100 ns – 3 5 µs ROUT ISINK ≤ 1 mA, ISOURCE ≥ –1 mA – 2 5 Ω VOUTN External output low pass filter ≤ 10 kHz; Sens = nominal – 150 – µV tPO Ratiometry Quiescent Output Voltage Error with respect to ∆VCC1 ΔVOUTQ(V) TA = 25°C – – ±3.0 % Magnetic Sensitivity Error with respect to ∆VCC2 ΔSens(V) TA = 25°C – – ±3.0 % Lin TA = 25°C – – ±2.5 % Sym TA = 25°C – – ±3.0 % B = 0 G; TA = 25°C 2.4 2.5 2.6 V B=0G 2.2 – 2.8 V A1301; TA = 25°C 2.0 2.5 3.0 mV/G A1302; TA = 25°C 1.0 1.3 1.6 mV/G A1301 1.8 – 3.2 mV/G A1302 0.85 – 1.75 mV/G Output Linearity Symmetry Magnetic Characteristics Quiescent Output Voltage Quiescent Output Voltage over Operating Temperature Range Magnetic Sensitivity Magnetic Sensitivity over Operating Temperature Range VOUTQ VOUTQ(ΔTA) Sens Sens(ΔTA) 1Refer to equation (4) in Ratiometric section on page 4. 2Refer to equation (5) in Ratiometric section on page 4. Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 CHARACTERISTIC DEFINITIONS Quiescent Output Voltage Ratiometric 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: The A1301 and A1302 feature a ratiometric output. This means that the quiescent voltage output, VOUTQ, and the magnetic sensitivity, Sens, are proportional to the supply voltage, VCC. ∆VOUTQ(∆ΤΑ) = VOUTQ(ΤΑ) – VOUTQ(25ºC) (1) Sens(25ºC) Sensitivity The presence of a south-polarity (+B) magnetic field, perpendicular to the branded face of the device package, increases the output voltage, VOUT, in proportion to the magnetic field applied, from VOUTQ toward the VCC rail. Conversely, the application of a north polarity (–B) magnetic field, in the same orientation, proportionally decreases the output voltage from its quiescent value. This proportionality is specified as the magnetic sensitivity of the device and is defined as: VOUT(–B) – VOUT(+B) 2B (2) The stability of the device magnetic sensitivity as a function of ambient temperature, ∆ Sens (∆TA) (%) is defined as: ∆Sens(∆ΤΑ) = Sens(ΤΑ) – Sens(25ºC) Sens(25ºC) × 100% ∆VOUTQ(∆V) = VOUTQ(VCC) VCC VOUTQ(5V) 5V (4) × 100% and the ratiometric change (%) in sensitivity is defined as: where Sens is in mV/G, and the result is the device equivalent accuracy, in gauss (G), applicable over the entire operating temperature range. Sens = The ratiometric change (%) in the quiescent voltage output is defined as: (3) ∆Sens(∆V) = Sens(VCC) VCC Sens(5V) 5V × 100% (5) Linearity and Symmetry The on-chip output stage is designed to provide linear output at a supply voltage of 5 V. Although the application of very high magnetic fields does not damage these devices, it does force their output into a nonlinear region. Linearity in percent is measured and defined as: Lin+ = Lin– = VOUT(+B) – VOUTQ 2 (VOUT(+B½) – VVOUTQ ) VOUT(–B) – VOUTQ 2(VOUT(–B½) – VOUTQ) (6) × 100% × 100% (7) and output symmetry as: Sym = VOUT(+B) – VOUTQ VOUTQ – VOUT(–B) × 100% Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com (8) 4 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 TYPICAL CHARACTERISTICS (30 pieces, 3 fabrication lots) 1301 Device Sensitivity vs. Ambient Temperature 1302 Device Sensitivity vs. Temperature 1.40 2.65 1.38 UA Package Sensitivity (mV/G) Sensitivity (mV/G) 2.60 2.55 2.50 LH Package 2.45 2.40 UA Package 1.36 1.34 1.32 1.30 LH Package 1.28 1.26 2.35 –50 –25 0 25 50 75 Temperature (°C) 1.24 100 125 150 -50 2.60 2.55 2.55 2.50 2.45 2.40 –50 –25 0 25 50 75 100 Temperature (°C) 125 0 25 50 75 100 125 150 Temperature (°C) 1302 Device VOUTQ vs. Ambient Temperature 2.60 Output Voltage (V) Output Voltage (V) 1301 Device VOUTQ vs. Ambient Temperature -25 2.50 2.45 2.40 –50 150 1301 Device Sensitivity vs. Supply Voltage –25 0 25 50 75 100 Temperature (°C) 125 150 1302 Device Sensitivity vs. Supply Voltage 1.7 3.5 3.0 Sensitivity (mV/G) Sensitivity (mV/G) 1.6 2.5 2.0 1.5 1.4 1.3 1.2 1.1 1.5 4.5 5.0 5.5 Supply Voltage (V) 6.0 1.0 4.5 5.0 5.5 Supply Voltage (V) 6.0 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 5 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 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) Output Voltage (V) 3.5 3.0 2.5 2.0 1.5 4.5 5.0 5.5 Supply Voltage (V) 3.0 2.5 2.0 1.5 4.5 6.0 5.0 5.5 Supply Voltage (V) 1302 Device LIN+ and LIN– vs. Supply Voltage 1301 Device LIN+ and LIN– vs. Supply Voltage 100.4 100.0 100.3 99.9 LIN– Linearity (%) Linearity (%) 100.2 100.1 100.0 6.0 LIN+ LIN+ 99.8 LIN– 99.7 99.9 99.8 4.5 5.0 5.5 Supply Voltage (V) 99.6 4.5 6.0 100.0 100.5 99.9 99.8 100.4 100.3 99.7 99.6 100.2 100.1 Symmetry (%) Symmetry (%) 6.0 1302 Device Symmetry vs. Supply Voltage 1301 Device Symmetry vs. Supply Voltage 99.5 99.4 99.3 99.2 99.1 99.0 4.5 5.0 5.5 Supply Voltage (V) 100.0 99.9 99.8 99.7 99.6 5.0 5.5 Supply Voltage (V) 6.0 99.5 4.5 5.0 5.5 Supply Voltage (V) 6.0 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 6 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 CUSTOMER OUTLINE DRAWINGS For Reference Only – Not for Tooling Use (Reference DWG-2840) Dimensions in millimeters – NOT TO SCALE Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown +0.12 2.98 –0.08 D 1.49 4°±4° A 3 0.180 +0.020 –0.053 0.96 D +0.10 2.90 –0.20 1.91 +0.19 –0.06 2.40 0.70 D 0.25 MIN 1.00 2 1 0.55 REF 0.25 BSC 0.95 Seating Plane B Gauge Plane 8X 10° REF PCB Layout Reference View Branded Face 1.00 ±0.13 0.05 0.95 BSC +0.10 –0.05 0.40 ±0.10 NNN C Standard Branding Reference View N = Last three digits of device part number A Active Area Depth, 0.28 mm B Reference land pattern layout All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet application process requirements and PCB layout tolerances C Branding scale and appearance at supplier discretion D Hall elements, not to scale Figure 1: Package LH, 3-Pin; (SOT-23W) Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 7 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 For Reference Only – Not for Tooling Use (Reference DWG-9065) Dimensions in millimeters – NOT TO SCALE Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown 2 X 45° B +0.08 4.09 –0.05 1.52 ±0.05 E 2.04 C 3 X 10° 1.44 E 3.02 E Mold Ejector Pin Indent +0.08 –0.05 45° Branded Face 1.02 MAX 0.51 MAX A 0.79 REF 1 2 3 0.43 +0.05 –0.07 0.41 +0.03 –0.06 1.27 NOM NNN 14.99 ±0.25 1 D Standard Branding Reference View = Supplier emblem N = Last three digits of device part number A Dambar removal protrusion (6X) B Gate and tie bar burr area C Active Area Depth, 0.50 mm REF D Branding scale and appearance at supplier discretion E Hall element, not to scale Figure 2: Package UA, 3-Pin SIP Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 8 Continuous-Time Ratiometric Linear Hall Effect Sensor ICs A1301 and A1302 Revision History Revision Revision Date Description of Revision 18 April 26, 2013 Update UA package drawing 19 January 1, 2015 Add LX option to Selection Guide 20 July 13, 2015 Corrected LH package Active Area Depth value 21 December 1, 2015 Updated product status to “Not for New Design” Copyright ©2005-2015, Allegro MicroSystems, LLC Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. For the latest version of this document, visit our website: www.allegromicro.com Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 9