A3213ELHLT-T

A3213 and A3214 Micropower Ultra-Sensitive Hall-Effect Switches FEATURES AND BENEFITS • • • • • • • • • AEC-Q100 automotive qualified Micropower operation Operate with north or south pole 2.4 to 5.5 V battery operation Chopper stabilized □□ Superior temperature stability □□ Extremely low switchpoint drift □□ Insensitive to physical stress High ESD protection Solid-state reliability Small size Easily assembly into applications due to magnetic pole independence PACKAGES: Not to scale NOT FOR NEW DESIGN 3-pin SOT23W (suffix LH) DESCRIPTION The A3213 and A3214 integrated circuits are ultra-sensitive, pole-independent Hall-effect switches with a latched digital output. They are especially suited for operation in batteryoperated, hand-held equipment such as cell and cordless telephones and palmtop computers. A 2.4 to 5.5 V operation and a unique clocking scheme reduce the average operating power requirements: the A3213 to 825 µW, the A3214 to 14 µW (typical, at 2.75 V). Except for operating duty cycle and average operating current, the A3213 and A3214 are identical. Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. The polarity independence and minimal power requirement allows these devices to easily replace reed switches for superior reliability and ease of manufacturing, while eliminating the requirement for signal conditioning. Improved stability is made possible through chopper stabilization (dynamic offset cancellation), which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. Continued on the next page… 3-pin SIP, matrix HD style (suffix UA) 3-pin SIP, chopper style (suffix UA) SUPPLY SWITCH LATCH OUTPUT SAMPLE & HOLD X DYNAMIC OFFSET CANCELLATION TIMING LOGIC GROUND Dwg. FH-020-5 Functional Block Diagram 27622.62-DS Rev. 28 October 31, 2016 A3213 and A3214 Micropower Ultra-Sensitive Hall-Effect Switches DESCRIPTION (continued) These devices include, on a single silicon chip, a Hall-voltage generator, small-signal amplifier, chopper stabilization, a latch, and a MOSFET output. Advanced BiCMOS processing is used to take advantage of low-voltage and low-power requirements, component matching, very low input-offset errors, and small component geometries. Devices are rated for operation over a temperature range of –40°C to 85°C or –40°C to 150°C. Two package styles provide a magnetically optimized package for most applications. ‘LH’ is a miniature low-profile surface-mount package, ‘UA’ is a threelead SIP for through-hole mounting. Each package is lead (Pb) free (suffix, –T) , with a 100% matte-tin-plated leadframe. SPECIFICATIONS SELECTION GUIDE Part Number Mounting Packing [1] A3213ELHLT-T LH package Surface Mount 7-in. reel 3000 pieces/reel A3213ELHLX-T LH package Surface Mount 13-in. reel 10000 pieces/reel A3213EUA-T [2] UA package SIP through hole Bulk 500 pieces/bag A3213LUA-T [2] UA package SIP through hole Bulk 500 pieces/bag A3214ELHLT-T LH package Surface Mount 7-in. reel 3000 pieces/reel A3214ELHLX-T LH package Surface Mount 13-in. reel 10000 pieces/reel A3214EUA-T [2] UA package SIP through hole Bulk 500 pieces/bag Ambient [1], TA (°C) DC (%) IDD(AVG)(typ) (µA) 25 309 0.10 6 –40 to 85 –40 to 150 –40 to 85 1 Contact 2 Allegro for additional packing and operating temperature range options. The chopper-style UA package is not for new design; the matrix HD style UA package is recommended for new designs. ABSOLUTE MAXIMUM RATINGS Characteristic Supply Voltage Magnetic Flux Density Symbol Rating Units VDD Notes 6 V B Unlimited G Output Off Voltage VOUT 6 V Output Current IOUT 1 mA Range E –40 to 85 °C Range L Operating Ambient Temperature TA –40 to 150 °C Maximum Junction Temperature TJ(max) 165 °C Tstg –65 to 170 °C Storage Temperature Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 2 A3213 and A3214 GND Micropower Ultra-Sensitive Hall-Effect Switches LH Package, 3-Pin SOT23W Pinout Diagram 2 3 VOUT VOUT 1 GND 2 VDD 1 VDD X 3 UA Package, 3-Pin SIP Pinout Diagram Terminal List Table Number Name Description LH UA 1 1 VDD Input power supply; tie to GND with bypass capacitor 3 2 GND Ground 2 3 VOUT Output signal Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 A3213 and A3214 Micropower Ultra-Sensitive Hall-Effect Switches ELECTRICAL CHARACTERISTICS: Valid over operating voltage and temperature range, unless otherwise noted Characteristic Supply Voltage Range Output Leakage Current Output On Voltage Awake Time Period Symbol Supply Current Typ. [1] Max. Units 2.4 3.0 5.5 V VOUT = 5.5 V, BRPN < B < BRPS –