A1388 and A1389 Linear Hall-Effect Sensor ICs with Analog Output Available in a Miniature, Low-Profile Surface-Mount Package FEATURES AND BENEFITS DESCRIPTION 5.0 V supply operation New applications for linear output Hall-effect sensorssuch QVO temperature coefficient programmed at Allegro for as displacement and angular positionrequire higher accuracy improved accuracy and smaller package sizes. The Allegro A1388 and A1389 Miniature package options linear Hall-effect sensor ICs have been designed specifically High-bandwidth, low-noise analog output to meet both requirements. These temperature-stable devices High-speed chopping scheme minimizes QVO drift across are available in both surface-mount and through-hole packages. operating temperature range The accuracy of each device is enhanced via end-of-line Temperature-stable quiescent voltage output and sensitivity optimization. Each device features non-volatile memory to Precise recoverability after temperature cycling optimize device sensitivity and the quiescent voltage output Output voltage clamps provide short-circuit diagnostic (QVO: output in the absence of a magnetic field) for a given capabilities application or circuit. This A1388 and A1389 optimized Undervoltage lockout (UVLO) performance is sustained across the full operating temperature Wide ambient temperature range: 40C to 150C range by programming the temperature coefficient for both Immune to mechanical stress sensitivity and QVO at Allegro end-of-line test. Enhanced EMC performance for stringent automotive applications These ratiometric Hall-effect sensor ICs provide a voltage output that is proportional to the applied magnetic field. The 3-pin ultramini SIP PACKAGES quiescent voltage output is adjusted around 50% of the supply 1.5 mm 4 mm 3 mm 3-pin SOT23-W (suffix UA) voltage. 2 mm 3 mm 1 mm (suffix LH) The features of these linear devices make them ideal for use in automotive and industrial applications requiring high accuracy, and they operate across an extended temperature range, 40C to 150C. Each BiCMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic Not to scale Continued on the next page Functional Block Diagram V+ VCC VOUT Sensitivity and Offset and C BYPASS Sensitivity TC Offset TC GND A13889-DS, Rev. 3 November 1, 2016 Downloaded from Arrow.com. Dynamic Offset Cancellation Tuned FilterA1388 and Linear Hall-Effect Sensor ICs with Analog Output Available in a Miniature, Low-Profile Surface-Mount Package A1389 DESCRIPTION (CONTINUED) sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique. The A1388 and A1389 sensor ICs are offered in two package styles. The LH is a SOT-23W style miniature low-profile package for surface-mount applications. The UA is a 3-pin ultramini single inline package (SIP) for through-hole mounting. Both packages are lead (Pb) free, with 100% matte-tin leadframe plating. SELECTION GUIDE Output Sensitivity Part Number Packing* Package Polarity (typ) (mV/G) A1388LLHLX-2-T Forward 2.5 10,000 pieces per reel 3-pin SOT-23W surface mount A1388LUA-2-T Forward 2.5 500 pieces per bag 3-pin SIP through hole A1389LLHLX-9-T Forward 9 10,000 pieces per reel 3-pin SOT-23W surface mount A1389LUA-9-T Forward 9 500 pieces per bag 3-pin SIP through hole A1389LLHLX-RP9-T Reverse 9 10,000 pieces per reel 3-pin SOT-23W surface mount *Contact Allegro for additional packing options ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Unit Forward Supply Voltage V 8 V CC Reverse Supply Voltage V 0.1 V RCC Forward Output Voltage V 7 V OUT Reverse Output Voltage V 0.1 V ROUT Output Source Current I VOUT to GND 2 mA OUT(SOURCE) Output Sink Current I VCC to VOUT 10 mA OUT(SINK) Operating Ambient Temperature T Range L 40 to 150 C A Maximum Junction Temperature T (max) 165 C J Storage Temperature T 65 to 170 C stg Allegro MicroSystems, LLC 2 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000 www.allegromicro.com Downloaded fromDownloaded from Arrow.com.Arrow.com.