AS61 MicroPower, Omnipolar Hall Effect Sensor Switch DESCRIPTION The AS61 is a low power integrated Hall switch FEATURES designed to sense the applied magnetic flux density Micro Power Consumption and give a digital output, which indicates the present 2.4V to 5.5V Battery Operation condition of the magnitude sensed. One example of Operation with Magnetic Field of either North or the applications is the ON/OFF switch in cellular South Pole (Omnipolar) flip-phones. Chopper Stabilized The micro power design is especially suitable for z Superior Temperature Stability battery-operated systems such as cellular phones or z Extremely Low Switch-Point Drift laptop computers, in which power consumption is z Insensitive to Physical Stress one major concern. The typical power consumption Good RF Noise Immunity of AS61 is below 10uW at 2.7V. -40ºC to 85ºC Operating Temperature The magnetic switching points are precise and Digital Output Signal insensitive to process and temperature variations. Package: TSOT23-3L, SOT23-3L, SIP-3L The output will be at “high” level when no magnetic field is applied. When the applied magnetic flux APPLICATIONS density is stronger than the switching threshold, the Cellular Flip-Phones output would be at the “low” level. Laptop Computers ORDER INFORMATION Digital Still and Video Cameras Portable instruments Part Number Package Packing AS61EHT TSOT23-3L Taping & Reel “ANI” and “ANISEM” is Trademarks of ANISEM Semiconductor, Inc. AS61EGT SOT23-3L Taping & Reel AS61EIK SIP-3L Bulk FUNCTION BLOCK DIAGRAM AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 1 AS61 MicroPower, Omnipolar Hall Effect Sensor Switch PACKAGE REFERENC PIN SYMBOL FUNCTION 1 VDD Supply Voltage 2 OUT Open Drain Output 3 GND Ground ABSOLUTE MAXIMUM RATINGS(1) VDD Supply Voltage…………...…….…… 2.4V~5.5V OUT Pin Voltage …………………………. -0.3V~5.5V Is Supply Current……………….……. -1mA~2.5mA Magnetic Flux Density……………………unlimited Operation Temperature Range ........ -40℃ to 85℃ Storage Temperature Range............ -40℃ to 150℃ Lead Temperature (Soldering, 10sec.)… ……260℃ PIN SYMBOL FUNCTION 1 VDD Supply Voltage 2 GND Ground 3 OUT Open Drain Output Recommended Operating Conditions(2) Supply Voltage VDD…………….………2.4V to 5.5V Operating Temperature …………….… -40°C to 85°C NOTEs: 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its operating conditions. AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 2 AS61 – Micro Power, Omnipolar Hall Effect Sensor Switch ELECTRICAL CHARACTERISTICS VDD =2.7V, TA = 25°C Unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Average Supply Current VDD=2.7V - 3 20 uA Average Supply Current VDD=2.7V - 1.1 - mA - 2.5 - uA - 0.1 - V Output Leakage Current - 0.01 - uA Operation Time - 60 - us Standby Time - 150 - ms Duty Cycle - 0.04 - % MIN TYP MAX UNITS BOPS 1.5 2.5 3.5 mT BOPN -3.5 -2.5 -1.5 BRPS 0.7 1.5 2.5 BRPN -2.5 -1.5 -0.7 BHYS 0.5 1 1.5 (During Operating Time) Supply Current VDD=2.7V ( During Standby Time) Output Saturation Voltage VDD=2.7V Note: 100% production test at +25℃; Specification over the temperature range are guaranteed by design. MAGNETIC CHARACTERISTICS VDD =2.7V, TA = 25°C Unless otherwise noted. (1mT=10Gauss) PARAMETER SYMBOL CONDITIONS Operate Points Release Points Hysteresis Bhys AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. mT mT 3 AS61 – Micro Power, Omnipolar Hall Effect Sensor Switch FUNCTION DESCRIPTION OPERATION The output of AS61 switches low (turns on) when in presence of strong flux density facing the marked side of package exceeds the operate point BOPS (or is less than BOPN). After turn-on, the output is capable of sinking up to 1 mA and the output voltage is low (turns on). In absence of flux density below the release point BRPS (or increased above BRPN), the AS61 output switches high (turns off). The difference in the magnetic operated and released point is the hysteresis (BHYS) of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical bouncing vibration and electrical noise. CHOPPER STABILIZED TECHNIQUE The chopper stabilized technique cancels the mismatching of the hall element, the amplifier offset voltage and temperature sensitive drift by the dynamic offset cancellation and switched capacitor technique. This technique produces devices have an extremely stable Hall output voltage, therefore the magnetic switch points are stable. APPLICATION INFORMATION It is strongly recommended that an external bypass capacitor be connected (in close to the Hall sensor) between the supply and ground of the device to reduce both external noise and noise generated by POLE-INDEPENDENT the The pole-independent sensing technique allows for operation with either a north or south pole magnet orientation, enhancing the manufacturability of the device. The state-of-the-art technology provides the same output polarity for either pole in presence. chopper-stabilization technique. This is especially true due to the relatively high impedance of battery supplies. The output is an open drain output, it must be connected a pull-up resistor to a supply voltage, connect a 50k resistor to VDD in common use. AWAKE & SLEEP Internal awake & sleep timing block circuit activates the sensor for 60 us and deactivates it for the remainder of the period (150 ms). A short “awake” time allows for stabilization prior to the sensor Pull-up Resistor Vs 2.4V to 5.5V C AS61 Q Gnd sampling and data latching on the falling edge of the timing pulse. While in sleep cycle the output is latched in its previous state. AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 4 AS61 – Micro Power, Omnipolar Hall Effect Sensor Switch PACKAGE DESCRIPTION Package Plastic TSOT23-3L AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 5 AS61 – Micro Power, Omnipolar Hall Effect Sensor Switch PACKAGE DESCRIPTION Package Plastic SOT23-3L AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 6 AS61 – Micro Power, Omnipolar Hall Effect Sensor Switch PACKAGE DESCRIPTION Package Plastic SIP-3L 3.962min 4.216max 1.245min 1.753max 0.75REF 13.60min 15.60max 2.87min 3.125max 0.406min 0.508max NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 1.27REF AS61 Rev.1.1 10/25/2009 0.330min 0.432max www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 7 AS61 – Micro Power, Omnipolar Hall Effect Sensor Switch © ANISEM Semiconductor Co., Ltd ANISEM assume responsibility for use of any circuitry other than circuitry entirely embodied in an ANISEM product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. ANISEM reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. ANISEM warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with ANISEM’s standard warranty. Testing and other quality control techniques are utilized to the extent ANISEM deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed. AS61 Rev.1.1 10/25/2009 www.anisem.com ANISEM Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 ANISEM All Rights Reserved. 8