AH1389-HK4-7

AH1389 ULTRA SENSITIVE DUAL OUTPUT UNIPOLAR HALL EFFECT SWITCH Description Pin Assignments The AH1389 is a miniature micropower magnetic Unipolar Hall effect switch IC with dual outputs specifically designed for portable and battery (Top View) powered consumer equipment to home appliances and industrial applications. To support battery powered equipment and low voltage V DD Output1(N-Pole) microcontrollers, the AH1389 can operate over the supply range of 1.6V 1 4 to 3.6V and uses a sleep function to give an average supply current of only 4A at 1.85V. The AH1389 has an 8kV ESD rating on the supply and output pins. To minimize PCB space the AH1389 is packaged in small low profile X2-DFN1410-4. 2 3 A North pole of sufficient strength will turn Output1 on and a South pole GND Output2(S-Pole) of sufficient strength will turn on Output2. The Output1 is turned on (pulled low) when the magnetic flux density (B), perpendicular to the X2-DFN1410-4 part marking surface, falls below North field operate point B (-25G OPN typical). The Output1 is held low until B rises above the North field release point B (-20G typical).Similarly, the Output2 will operate RPN (pulled low) when B to the part marking surface rises above South field Applications operate point B (25G typical) and is held low until B falls below the OPS Smart Cover or Dock Detect for Cellular Phones and Tablet South field release point B (20G typical). RPS Position Detect for Digital Still, Video Cameras and Handheld Gaming Consoles Features Door, Lids and Tray Position Detect Switches Home Appliances and Industrial Applications Two Monolithic Unipolar Hall Switches Level, Proximity and Position Switches Operation with a North Pole (Output1) to Part Marking Surface Contact-Less Switches in Home Appliances and Industrial Operation with a South Pole (Output2) to Part Marking Surface Applications Supply Voltage of 1.6V to 3.6V Micropower Operation Dual Outputs for Independent Pole Detection for Design Flexibility Internal Pull up and Pull Down Capability Chopper Stabilized Design Superior Temperature Stability Extremely Low Switch-Point Drift Insensitive to Physical Stress Good RF Noise Immunity Operating Temperature Range -40C to +85C 8kV ESD on Supply and Output Pins Small Low Profile X2-DFN1410-4 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See Offset Cancellation AH1389 Typical Applications Circuit GND V DD C IN AH1389 Output1 Output2 (S-Pole) (N-Pole) Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical and should be placed as close to IN the supply pin as possible. Pin Descriptions Package: X2-DFN1410-4 Pin Number Pin Name Function 1 Power Supply Input V DD 2 GND Ground Pin 3 Output2 Output Pin(South-Pole) 4 Output1 Output Pin(North-Pole) Pad Pad The center exposed pad should be tied to the GND or floating No connection internally. Functional Block Diagram V DD 1 Sleep/Awake Logic and Power Switch 4 Output1 (N-Pole) Latch and Hall Output GND Plate Driver V Amp DD Controller 3 Output2 (S-Pole) 2 GND 2 of 9 AH1389 June 2017 Diodes Incorporated www.diodes.com Document number: DS39033 Rev. 2 - 2 NEW PRODUCT