View ATS137-WLA-B_612910.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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 -20C to 85C 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=+ 25C) Test Conditions -- Vcc=14V, Ic=20mA Vce=14V, Vcc=14V Vcc=20V, Output Open Vcc=14V, RL=820, CL=20pF Vcc=14V, RL=820, CL=20pF Min 3.5 Typ 300 <0.1 5 0.3 0.3 Max 20 700 10 10 1.5 1.5 Units V mV uA mA us us Values 20 -20 Unlimited 30 25 -20~+85 -65~+150 175 400 200 Unit V V V mA C C C mW mW
ATS137
Electrical Characteristics
Characteristic Supply voltage Output saturation voltage Output leakage current Supply current Output rise time Output falling time Symbol Vcc Vce(sat) Icex Icc tr tf
Test Circuit
14V
DO RL RL=820 Ohm CL=20 pF CL
Test Circuit
Anachip Corp. www.anachip.com.tw 3/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Magnetic Characteristics (Ta=25oC)
(1mT=10Gauss) A grade Parameter Operate Point Release point Hysteresis B grade Parameter Operate Point Release point Hysteresis Symbol Bop Brp Bhys Symbol Bop Brp Bhys Min. 10 Min. 10 Typ. 80 Typ. 80 Max. 100 Max. 130 Unit Gauss Gauss Gauss Unit Gauss Gauss Gauss
ATS137
Application Information
-Operating principle ATS137 is a three pins Hall Effect switch IC which can turn magnetic flux variety to digital output signal. In other words, it is an interface from magnetic system to electrical one by Hall effect. The illustrations are shown in Fig.1.
Vo Vcc
Bhys
Magnet Turn on magnetic flux (Gauss)
S
Turn off Vce(sat)
Marking side
Brp
Bop
electrical
Fig.1 Hall-effect switch Output driver is open-collector topology and maximum sink current (Isink) is 25mA. The illustrated circuit is shown as Fig.2. 3.5V ~20V
Vcc
RL
DO Vo
ATS 137S Vss
Isink
Digital Output
Fig.2 Application circuit
Anachip Corp. www.anachip.com.tw 4/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Application Information (Continued)
Vo will turn on(low) if the S magnetic flux larger than operation point (Bop), and turns off whenever the magnetic flux is removed and lower than release point (Brp). The related waveforms are shown in Fig.3.
ATS137
magnetic flux (mT) Bop S Marking side Vo Hall Effect switch Vcc Vce(sat) t t Brp
Fig.3 Vo and magnetic flux variety
The major applications are for contactless switching and shown as follows: - VCD/DVD loader, CD/DVD ROM: Detect if the tray is opened or closed - Cover detector (open/close): Cellular phone cover detector, Refrigerator door detector, Microwave oven door sensor... etc - Home safety: instead of reed relay to detect the situation of door/window. - Due to contactless and without mechanical contact point, its reliability and life cycle are much longer than reed relay. In addition, its switching speed is much faster than mechanical devices.
Anachip Corp. www.anachip.com.tw 5/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Marking Information
(1) SOT23
(Top View) ID code A~Z: Non-Lead Free a~z: Lead Free JA: ATS137 Date code Y : Year M : Month (A~L)
ATS137
(2) SIP3
(Top View) 137 YWW X ID code A~Z: Non-Lead Free a~z : Lead Free Date code Y : Year WW : Nth week
XX YM X
Package Information
(1)Package Type: SIP-3L
0.51mm NOM 2.10mm
1.55mm
BRANDED SURFACE
1
2
3
Active Area Depth
Package Dimension
45
Sensor Location
0.38mm 0.7mm
1.57mm 1.47mm 0.41mm 0.41mm
3
4.17mm 4.04mm 1.27mm
2 1
1.82 mm
45
3.10mm 2.97mm
15.50mm 13.00mm
Anachip Corp. www.anachip.com.tw 6/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Package Information (Continued)
(2)Package Type: SOT23-3L
D
ATS137
2 ( Sensing point )
E 0.8mm HE
1
1.45mm
3
e1 e c1(4x) 0.10 C 3X SEATING PLANE c2(4x) b(3x)
SEE VIEW C
A2
GAUGE PLANE L c
A
A1
L1
VIEW C
Symbol
Dimensions In Millimeters Min. 1.05 0.05 1.00 0.25 0.08 2.70 1.50 2.60 0.30 0.50 1.80 0.85 0o 3o 6o Nom. 1.10 2.90 1.60 2.80 0.60 1.90 0.95 5o 5o 8o Max. 1.35 0.15 1.20 0.50 0.20 3.00 1.70 3.00 0.55 0.70 2.00 1.05 10o 7o 10o
Dimensions In Inches Min. 0.041 0.002 0.039 0.010 0.003 0.106 0.059 0.102 0.012 0.020 0.071 0.033 0o 3o 6o Nom. 0.043 0.114 0.063 0.110 0.024 0.075 0.037 5o 5o 8o Max. 0.053 0.006 0.047 0.020 0.008 0.118 0.067 0.118 0.022 0.028 0.079 0.041 10o 7o 10o
A A1 A2 b C D E HE L L1 e e1 1 2
Anachip Corp. www.anachip.com.tw 7/7
Rev. A5 Jul 14, 2004

▲Up To Search▲

Price & Availability of ATS137-WLA-B

	To Download ATS137-WLA-B Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .