ATC
Single Hall Effect Switch
Features
- 3.5V to 20V DC operation voltage - Temperature compensation - Wide operating voltage range - Open-Collector pre-driver - 25mA maximum sinking output current. - Reverse Polarity Protection
ATS137
General Description
ATS137 is an switched Hall-Effect IC which is for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. The bandgap regulator allows a wide operating voltage range. ATS137 is rated for operating temperature range from -20°C to 85°C and voltage range from 3.5V to 20V.
Applications
- VCD/DVD loader, CD/DVD ROM - Cover detector - Speed measurement - Home appliances - Home safety
Ordering Information
ATS137 X - X X X - X Magnetic Characteristics A or B
Single Hall-effect Switch
Wafer Body Blank or A~Z : if necessary to specify
Package P: SIP3 W: SOT23
Lead L : Lead Free Blank: Normal
Packing Blank : Tube or Bulk A : Tape & Reel
Typical Circuit
3.5V ~20V
Vcc
RL
ATS 137
Vss
DO Digital Output
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
Rev.A5 Jul 14, 2004 1/7
ATC
Single Hall Effect Switch
Functional Block Diagrams
Vcc
1
ATS137
Regulator Hall plate Amp
3 DO
2 Vss
Pin Descriptions
137
2 Top view 137 1 : Vcc 1 3 2 : Vss 3 : DO
1
2
3
Name Vcc Vss DO
P/I/O P P O
Pin # 1 2 3
Description Positive Power Supply Ground Digital Output
Anachip Corp. www.anachip.com.tw 2/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Absolute Maximum Ratings
Characteristics Supply voltage Reverse Vcc Polarity Voltage Magnetic flux density Output OFF Voltage Output “on” current Continuous Operating temperature Storage temperature Maximum Junction Temp. SIP-3L Package Power Dissipation SOT23-3L ( at Ta=25oC ) Symbol VCC VRCC B Vce Ic Ta Ts Tj Pd (Ta=+ 25°C) Test Conditions — Vcc=14V, Ic=20mA Vce=14V, Vcc=14V Vcc=20V, Output Open Vcc=14V, RL=820Ω, CL=20pF Vcc=14V, RL=820Ω, CL=20pF Min 3.5 Typ 300
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