TDE0160 PROXIMITY DETECTOR .. . .. SUPPLY VOLTAGE : +4 TO +36V SUPPLY CURRENT : < 1.2mA OUTPUT TRANSISTORS : I = 20mA ; VCE (sat) ≤ 1100mV OSCILLATOR FREQUENCY : < 1MHz LOSS RESISTANCE : 5 TO 50kΩ. DIP14 DESCRIPTION The TDE0160 is designed to detect metal bodies by the effect of Eddy currents on the HF losses of a coil. It has two complementary open collector outputs with peak limiting. Hysteresis is adjustable, and an electronic switching circuit is incorporated for disabling both outputs. An internal zener diode maintains the supply voltage to the circuit in ”dipole” operation. SO14 ORDERING NUMBERS : TDE0160DP (DIP14) TDE 0160FP (SO14) PIN CONNECTION (top view) April 1993 1/8 TDE0160 SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Value Unit VCC Supply Voltage 36 V VO* Output Voltage* 36 V IO (I1-I3) Parameter Output Current (I1-I3) 40 mA IZ Zener Current 40 mA Tj Junction Temperature + 150 °C Toper Ambient Temperature Range – 25 to + 85 °C Tstg Storage Temperature Range – 65 to + 150 °C * Internal peak limiting to protect against transient voltage surges. 2/8 TDE0160 ELECTRICAL CHARACTERISTICS T amb = +25oC unless otherwise specified Symbol VCC Parameter Min. Supply Voltage VZ Zener Voltage (IZ = 20mA) ICC Supply Current Typ. Max. Unit Pin 11 4 36 V Pins 9-11 3 4 V 1.2 mA Pin 11 – Limiting (I = 0.1mA) Pin 1 or 3 42 – Output Transistor Saturation Voltage (I1 or I3 = +20mA) Pin 1 or 3 0.9 1.1 Pin 1 or 3 2 µA 110 130 mV – Output Transistor Leakage Current (V = +30V) – Switching Threshold Rn Negative Resistance* (5kΩ < RH < 50kΩ, f = 100kHz, RS = 0) – Inherent Hysteresis (R 2 = 0) – Programmed Hysteresis (H < 15%) fosc Pin 12 90 V V Rn = R H 1 2 Oscillation Frequency 1 – Switching Frequency (with matched oscillator circuit) – Switching Time-delay – Switching Response Time (Cd = 10nF ; VCC = +20V) % % Rs Rs+ RH MHz 750 Hz 0.5 Cd (µF) s 10 µs * See characteristic curves SWITCHING OPERATION If IC exceeds ICO, where I CO = V(ref) Rd the switch cuts off the output transistors and tests the value of current IC, with time constant 0.5 Cd. On power up the internal start system cuts off the output transistors until VCC reaches a value permitting normal operation of the circuit. 3/8 TDE0160 MILD STEEL 4/8 TDE0160 TYPICAL APPLICATION DIAGRAMS a) b) Ca : Cf : Cd : Co : Lo : Rd : RH : Rs : RL : 10nF 1nF 10nF 390pF 65µH to 1MHz 10kΩ 15kΩ 3kΩ 2.5kΩ VCC : 20V fo ≈ 1MHz emean = 2.5mm Φ coil : 14mm Core COFELEC 432FP Turns : 47 Stranded wire : 15 x 5/100 c) 5/8 TDE0160 SO14 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. TYP. 1.75 0.1 MAX. 0.069 0.25 a2 0.004 0.009 1.6 0.063 b 0.35 0.46 0.014 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.020 c1 45 (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 7.62 0.300 F 3.8 4.0 0.15 0.157 L 0.4 1.27 0.016 0.050 M S 6/8 MIN. 0.68 0.027 8 (max.) TDE0160 DIP14 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.51 B 1.39 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 0.280 I 5.1 0.201 L Z 3.3 1.27 0.130 2.54 0.050 0.100 7/8 TDE0160 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 8/8