Revised August 2006 SEN-S65 Magneto-Inductive Sensor General Description PNI Corporation’s Magneto-Inductive (MI) sensors are based on patented technology that delivers breakthrough, cost-effective magnetic field sensing performance. These sensors change inductance by 100% over their field measurement range. This variable inductance property is used in a patented temperature and noise stabilized oscillator/counter circuit to detect field variations. The PNI 11096 Sensor Driver ASIC is the recommended implementation of this patented circuit, and can be used with the SEN-S65 to construct a magnetometer with up to 3-axes. Advantages of the SEN-S65 include low voltage and power, small size surface mount package, large signal noise immunity under all conditions, and a large dynamic range. When used with the 11096 ASIC, resolution and field measurement range are software configurable for a variety of applications. The measurement is very stable over temperature and inherently free from offset drift. These advantages make PNI Corporation' s MI sensors the choice for a wide variety of applications. Features • Low power: draws < 100 µA at 3 VDC • Small size: 6.3 x 2.3 x 2.2 mm • Large field measurement range: ±1100 µT (±11 Gauss) • High resolution field measurement: 0.015µT (0.00015 Gauss) • Wide temperature range: -55° to140°C (operational) • Few external components: PNI 11096 ASIC with two resistors per sensor • Surface mount package supplied on tape & reel • RoHS Compliant Applications • Handheld battery-powered devices with built-in compass feature • High-performance magnetic field sensing • High-performance solid-state navigation equipment for automotive, marine and aeronautic applications • Magnetic object proximity sensing Ordering Information Part Number MOQ Package 11244P <5000 Cut Tape 11244 5000 Tape & Reel PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 1 SEN-S65 Specifications Absolute Maximum Ratings Symbol Parameter Maximum Vcoil Voltage across coil 2.0 VDC VB Coil to case breakdown voltage 200 VDC IIN Input Pin Current 50 mA at 25 °C TSTRG Storage Temperature -65 °C to 155 °C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Sensor Characteristics Parameter Min (a) DC resistance at 25 °C ±15 °C 30 DC resistance versus temperature Inductance Typ (b) Max Units 45 Ω 0.4 % / °C 400 - 600 µH Operating Temperature -55 140 °C Storage Temperature -65 155 °C (a) Determined with a DC source. (b) No DC bias, 100kHz at 1 Vp-p, orthogonal to Earth’s magnetic field. PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 2 SEN-S65 Specifications Sensor Characteristics with PNI 11096 ASIC Parameter Current Condition Min 3 VDC, Rb = 33Ω 5 VDC, Rb = 56Ω (a) Typ Max Units 0.4 0.42 0.5 0.5 mA RMS (measured at ASIC Vcc) Field measurement range Gain (b) (c) Linearity Resolution (d) 3 VDC, Rb = 33Ω 5 VDC, Rb = 56Ω -1100 -1100 3 VDC, Rb = 33Ω 5 VDC, Rb = 56Ω 27 –38 18 – 26 (best fit straight line at ±300 µT) 0.6 PS=2048 PS=4096 0.030 0.015 3 VDC, Rb = 33Ω Frequency 1100 1100 Operating Temperature -20 (when used with PNI 11096) (a) Current includes the ASIC and two SEN-S65 in continuous sequential sampling. (b) counts/µT % of 300 µT 1 µT 175 (within free Earth’s magnetic field) µT kHz °C 70 Field measurement range is defined as the monotonic region of the output characteristic curve. (c) Gain is defined as the change in number of counts from the ASIC, when the period select is set to 2048, per change in the magnetic field of µT. For situations requiring higher gain and less field measurement range, the gain and resolution can be increased by a factor of 2 by setting the ASIC period to 4096. When setting higher period selects, be aware that the ASIC counter can overflow if the field is strong enough to drive the count beyond a signed 16-bit integer. Period select set to 2048 is the highest setting where it is impossible to overflow the counter. (d) Resolution is 1/gain. Maximum resolution obtained by setting the ASIC period select to 4096 For more information, see “PNI-11096 ASIC data sheet” SEN-S65 Continous Sampling 3V at 8Hz Period Select Ratio Gain (Counts/µT) Resolution (µT) 0 /32 0.523 1.912 Typical Operating Current (mA RMS) 0.022 1 /64 1.047 0.956 0.035 2 /128 2.094 0.478 0.06 3 /256 4.188 0.239 0.11 4 /512 8.375 0.120 0.21 5 /1024 16.75 0.060 0.41 6 /2048 33.5 0.030 0.786 7 /4096 67 0.015 1.126 PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 3 SEN-S65 Specifications Typical Operating Characteristics: SEN-S65 (3VDC; Rb = 43 :) Temperature Characteristics Linearity vs. Temperature PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 4 SEN-S65 Specifications Typical Operating Characteristics: SEN-S65 (3VDC; Rb = 43 :) Linearity vs. Temperature, Normalized to Room Temperature (RMT) Output Counts is defined as the Period Select (PS) setting for the 11096 ASIC. See “PNI-11096 ASIC data sheet” for more information. PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 5 SEN-S65 Specifications Typical Operating Characteristics: SEN-S65 Linearity Over Field Range r2000 PT at 3V Sen-S65 Biasing (Rb) 3V Output Counts(1024 sampling) 20000 15000 10000 10 Ohm 5000 15 Ohm 22 Ohm 0 33 Ohm 43 Ohm -5000 56 Ohm -10000 -15000 -20000 -200 -150 -100 -500 0 0 0 0 500 1000 1500 2000 Magnetic Field(uT) Linearity Over Typical Operating Range at 3V Sen-S65 Biasing (Rb) 3V 6000 Output Counts(1024 sampling) 4000 10 Ohm 2000 15 Ohm 22 Ohm 0 33 Ohm 43 Ohm 56 Ohm -2000 -4000 -6000 -300 -200 -100 0 100 200 300 Magnetic Field(uT) PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 6 SEN-S65 Specifications Typical Operating Characteristics: SEN-S65 Linearity Over Field Range r2000 PT at 5V Sen-S65 Biasing (Rb) 5V Output Counts(1024 sampling) 15000 10000 22 Ohm 5000 33 Ohm 43 Ohm 0 56 Ohm 75 Ohm -5000 100 Ohm -10000 -15000 -2000 -1000 0 1000 2000 Magnetic Field(uT) Linearity Over Typical Operating Range at 5V Sen-S65 Biasing (Rb) 5V Ouput Counts(1024 sampling) 4000 3000 2000 22 Ohm 1000 33 Ohm 43 Ohm 0 56 Ohm 75 Ohm -1000 100 Ohm -2000 -3000 -4000 -300 -100 100 300 Magnetic Field(uT) PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 7 SEN-S65 Specifications Recommended Circuit Block Diagram Rb is dependent on the supply voltage. 5 VDC: Rb = 75 Ω 3 VDC: Rb = 43 Ω PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 8 SEN-S65 Specifications Package Information SEN-S Outline dimensions ( Unit : mm ) 3D VIEW 6.25 2.25+0.05,-0.0 Polarity mark Top view R 0.5 R 0.15 2.25+0.0,-0.15 2.6 2.0 Front view Side view 6.00 6.0 5.3 4.0 1.50 1.00 Floating 1.6 0.7 Bottom view 2.30 Floating 2.00 1.70 Foot Print Note : - Polarity mark indicates start winding of the Sensor (Black ink imprinted mark) - The letters " PNI " are engraved on metal shield can - Tolerances are +/-0.05 mm unless otherwise specified PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 9 SEN-S65 Specifications Tape & Reel Information PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 10 SEN-S65 Specifications Recommended Processing Parameters a Table 1: Recommended Processing Parameters Reflow Parameter Temperature (°C) Time (Sec) Preheat Temperature (Tsmin To Tsmax) Temperature Tl (Typical Solder Melting Point) Tsmax To Tl Ramp-Up Rate Peak Temperature Tp Time 25°C To Peak Tp Time Maintained Above Temperature Tl (Tl) Soak (Time Within 5° Of Actual Peak Tp) Rampdown Rate 150°C – 200°C >218°C 3°C/Second Max 260°C 6 Minute Max 218°C 60-180 a. 60-120 10-20 4°C/Second Max Meets lead free profile recommendation (IPC/JEDEC J-STD-020) PNI Corporation • 133 Aviation Blvd., Ste. 101, Santa Rosa CA 95403 USA • 707-566-2260 • fax 707-566-2261 • www.pnicorp.com For the most current specifications, please visit our website at www.pnicorp.com 11