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APX9131A
Hall Effect Micro Switch IC
Features
* * * * *
Micro Power Operation for Battery Applications Chopper Stabilized Amplifier Independent of North or South Pole Magnet, Easy for Manufacture Small Size Package Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APX9131A, integrated circuit, is an ultra-sensitive, pole independent Hall-effect switch with a latched digital output. A 2.5 volt to 3.5 volt operation and an unique clocking scheme reduce the average operating power requirements, either a north or south pole of sufficient flux will turn the output on; in the absence of a magnetic field, the output is off. The polarity independence and minimal power requirement allow this device to be easily replaced reed switch for superior for signal conditioning. Advanced CMOS processing is used to take advantage of
Applications
* * * *
Micro Switch Handheld Wireless Application Wake Up Switch Clamp Shell Type Application Switch Magnet Switch in Low Duty Cycle Applications
low-voltage and low-power requirements, SOT-23 package provided a optimized package for most applications.
Pin Configuration
GND
APX9131A
VDD
VOUT
SOT-23
Ordering and Marking Information
APX9131A Assembly Material Handling Code Temperature Range Package Code APX9131A A: X31X Package Code A : SOT-23 Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device X - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for MSL classification at lead-free peak reflow temperature. ANPEC defines "Green" to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight).
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright (c) ANPEC Electronics Corp. Rev. A.2 - Apr., 2009 1 www.anpec.com.tw
APX9131A
Absolute Maximum Ratings
Symbol VDD VOUT TJ TSTG Supply Voltage Output Voltage Junction Temperature Range Storage Temperature Range
(TA = 25C unless otherwise noted)
Rating 5 5 150 -65 to +150 Unit V V C
Parameter
Electrical Characteristics
Symbol VDD Characteristic Supply Voltage Range
(TA = 25C, VDD=3V unless otherwise noted)
APX9131A Test Conditions Min. Operating Average 2.5 Typ. 5 1.2 2 20 180 60 0.3 11 Max. 3.5 10 2 8 1.0 40 V A mA A A mV s mS % kHz Unit
IDD
Supply Current
Awake Sleep
IOFF VOL tawake tperiod d.c. fc
Output Leakage Current Output Low Voltage Wake Up Time Period Duty Cycle Chopping Frequency
VOUT = 3.5V, BRPNMagnetic Characteristics
Symbol BOPS Operate Points BOPN BRPS Release Points BRPN Bhys Hysteresis Characteristic
(TA = 25C, VDD=3V unless otherwise noted)
APX9131A Test Conditions Min. 20 -60 10 -50 Typ. 40 -40 25 -25 15 Max. 60 -20 50 -10 G G G G G Unit
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APX9131A
Typical Operating Characteristics
Switching Points vs. Ambient Temperature
80 60 Switching Points(G) 40 20 0 -20 -40 -60 -80 -40 -20 BOPN BRPN BRPS BOPS
Switching Points vs. Supply Voltage
60 BOPS 40 Switching Points(G) 20 0 BRPN -20 -40 -60 2.5 BOPN 3 3.5 4 4.5 5 BRPS
0
20
40
60
o
80
100
Ambient Temperature( C)
Supply Voltage(V)
10 Average Supply Current (A)
Average Supply Current vs. Ambient Temperature
Average Supply Current (A)
20 18 16 14 12 10 8 6 4 2
Average Supply Current vs. Supply Voltage
8
6
4
2
0 -40
-20
0
20
40
60
80
100
0 2.5
3
3.5
4
4.5
5
Ambient Temperature (oC)
Supply Voltage(V)
Output Sink Current vs. Output Low Voltage
20 18 Output Sink Current(mA) 16 14 12 10 8 6 4 2 0 0 0.2 0.4 0.6 0.8 1 Output Low Voltage(V) VDD=3V VDD=4V VDD=5V
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APX9131A
Operating Waveforms
Output Switch Waveform
Output Switch Waveform
Output Sink Voltage (0.5V/div)
VDD=3V RL=5.1k CL=12pF
Output Sink Voltage (0.5V/div)
VDD=3V RL=5.1k CL=12pF
VOUT=0.5V/div
VOUT=0.5V/div
0
Time (50s/div)
Time (2s/div)
Pin Description
PIN NO. 1 2 3 NAME VDD VOUT GND Power Input When a magnetic field enters the hall element and exceeds the operate point BOPS (or less than BOPN), the output turns on (output is low). When the magnetic field is below the release point BRPS (or above BRPN), the output turns off (output is high). It is designed with open drain configuration and connecting a pull up resistor from VOUT to VDD is necessary. It cannot be floating. Ground Connection. FUNCTION
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APX9131A
Block Diagram
VDD
Awake & Sleep Timing Logic VOUT Hall Plane Dynamic Offset Cancellation
Latch Circuit Chopper Amplifier Hysteresis Control GND
Typical Application Circuit
50k
VOUT
VDD
+ 2.5V-3.5V 0.1F -
APX9131A
GND
SOT-23 (Top View)
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APX9131A
Function Description
Operation The output of APX9131A 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 1mA and the output voltage is low (turns on). In absence of flux density below the release point BRPS (or increased above BRPN), the APX9131A 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.
5V MAX OUTPUT VOLTAGE
OUTPUT OFF BOPN BOPS
BRPN 0 -B 0
BRPS
OUTPUT ON +B
MAGNETIC FLUX
Pole-Independent 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. Awake & Sleep Internal awake & sleep timing block circuit activates the sensor for 180s and deactivates it for the remainder of the period (60ms). A short "awake" time allows for stabilization prior to the sensor sampling and data latching on the falling edge of the timing pulse. While in sleep cycle, the output is latched in its previous state.
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APX9131A
Application Information
It is strongly recommended that an external bypass capacitor be connected (in close to the Hall sensor) between the supply and the ground of the device to reduce both external noise and noise generated by the 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 pullup resistor to a supply voltage which is lower than 5V, connect a 50k resistor to VDD in common use.
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APX9131A
Package Information
SOT-23
D e
SEE VIEW A E1 E
b e1
c
0.25 VIEW A SOT-23 INCHES MIN. MAX. 0.057 0.000 0.035 0.012 0.003 0.106 0.102 0.055 0.037 BSC 0.075 BSC 0.60 8 0.012 0 0.024 8 0.006 0.051 0.020 0.009 0.122 0.118 0.071 MAX. 1.45 0.15 1.30 0.50 0.22 3.10 3.00 1.80
A2
A
A1
S Y M B O L A A1 A2 b c D E E1 e e1 L 0
MILLIMETERS MIN.
0.00 0.90 0.30 0.08 2.70 2.60 1.40 0.95 BSC 1.90 BSC 0.30 0
Note : Dimension D and E1 do not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 10 mil per side.
Copyright (c) ANPEC Electronics Corp. Rev. A.2 - Apr., 2009
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0
L
GAUGE PLANE SEATING PLANE
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APX9131A
Carrier Tape & Reel Dimensions
OD0 P0 P2 P1 A E1 F K0 B SECTION A-A T B0 A0 OD1 B A SECTION B-B
d
Application
A 178.0O .00 2
H 50 MIN. P1 4.0O .10 0
H A
T1
T1 8.4+2.00 -0.00 P2 2.0O .05 0
C 13.0+0.50 -0.20 D0 1.5+0.10 -0.00
d 1.5 MIN. D1 1.0 MIN.
D 20.2 MIN. T 0.6+0.00 -0.40
W 8.0O .30 0 A0 3.20O .20 0
W
E1 1.75O .10 0 B0 3.10O .20 0
F 3.5O .05 0 K0 1.50O .20 0 (mm)
SOT-23
P0 4.0O .10 0
Devices Per Unit
Package Type SOT-23 Unit Tape & Reel Quantity 3000
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APX9131A
Taping Direction Information
SOT-23
USER DIRECTION OF FEED
Classification Profile
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APX9131A
Classification Reflow Profiles
Profile Feature Preheat & Soak Temperature min (Tsmin) Temperature max (Tsmax) Time (Tsmin to Tsmax) (ts) Average ramp-up rate (Tsmax to TP) Liquidous temperature (TL) Time at liquidous (tL) Peak (Tp)* package body Temperature Sn-Pb Eutectic Assembly 100 C 150 C 60-120 seconds 3 C/second max. 183 C 60-150 seconds See Classification Temp in table 1 20** seconds 6 C/second max. 6 minutes max. Pb-Free Assembly 150 C 200 C 60-120 seconds 3C/second max. 217 C 60-150 seconds See Classification Temp in table 2 30** seconds 6 C/second max. 8 minutes max.
Time (tP)** within 5C of the specified classification temperature (Tc) Average ramp-down rate (Tp to Tsmax) Time 25C to peak temperature
* Tolerance for peak profile Temperature (Tp) is defined as a supplier minimum and a user maximum. ** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. Table 1. SnPb Eutectic Process - Classification Temperatures (Tc) Package Thickness <2.5 mm 2.5 mm
3
Volume mm <350 235 C 220 C
3
Volume mm 350 220 C 220 C
3
3
Table 2. Pb-free Process - Classification Temperatures (Tc) Package Thickness <1.6 mm 1.6 mm - 2.5 mm 2.5 mm Volume mm <350 260 C 260 C 250 C Volume mm 350-2000 260 C 250 C 245 C Volume mm >2000 260 C 245 C 245 C
3
Reliability Test Program
Test item SOLDERABILITY HOLT PCT TCT ESD Latch-Up Method JESD-22, B102 JESD-22, A108 JESD-22, A102 JESD-22, A104 MIL-STD-883-3015.7 JESD 78 Description 5 Sec, 245C 1000 Hrs, Bias @ 125C 168 Hrs, 100%RH, 2atm, 121C 500 Cycles, -65C~150C VHBMU2KV, VMMU200V 10ms, 1trU 100mA
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APX9131A
Customer Service
Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 2F, No. 11, Lane 218, Sec 2 Jhongsing Rd., Sindian City, Taipei County 23146, Taiwan Tel : 886-2-2910-3838 Fax : 886-2-2917-3838
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