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TDA0161

型号：

TDA0161

描述：

接近探测器[ PROXIMITY DETECTORS ]

品牌：

STMICROELECTRONICS[ ST ]

页数：

6 页

PDF大小：

127 K

下载PDF手册
TDA0161  
PROXIMITY DETECTORS  
.
OUTPUT CURRENT : 10mA  
OSCILLATOR FREQUENCY : 10 MHz  
SUPPLY VOLTAGE : + 4 TO + 35 V  
.
.
Minidip  
ORDERING NUMBER : TDA0161DP  
SO8  
ORDERING NUMBER : TDA0161FP  
DESCRIPTION  
These monolithic integrated circuits are designed  
for metallic body detection by detecting the vari-  
ations in high frequencyEddy current losses. With  
an external tuned circuit they act as oscillators.  
Output signal level is altered by an approaching  
metallic object.  
PIN CONNECTION (top view)  
Output signal is determined by supply current  
changes. Independentof supply voltage, this cur-  
rent is high or low according to the presence or the  
absence of a close metallic object.  
SCHEMATIC DIAGRAM  
1/6  
April 1993  
TDA0161  
ABSOLUTE MAXIMUM RATINGS  
Symbol  
Parameter  
Value  
35  
Unit  
V
oC  
oC  
VCC  
Tj  
Supply Voltage  
Junction Temperature  
Storage Temperature Range  
+150  
Tstg  
–55 to +150  
ELECTRICAL CHARACTERISTICS  
TDA0161DP  
TDA0161FP  
-40oC < Tamb < +100oC  
-40oC < Tamb < +100oC  
Ptot < 150mW, unless otherwise specified  
Symbol  
Parameter  
Min.  
Typ.  
Max.  
Unit  
V
VCC  
Supply Voltage  
4
35  
Reverse Voltage Limitation (ICC = -100 mA)  
Supply Current, Close Target (Tamb = +25oC)  
+4V < VCC < +35V  
TDA0161  
TDA0161  
TDA0161  
1
V
ICC  
ICC  
mA  
8
10  
12  
1
Supply Current, Remote Target  
+4V < VCC < +35V  
mA  
Supply Current Transition Time  
µs  
C3 = 0  
1
C3 ≠ 0  
(100 x C3 (nF))  
fosc  
fO  
Oscillator Tuning Frequency  
Output Frequency (C3 = 0)  
10  
10  
20  
MHz  
kHz  
µA  
0
∆ICC  
Rn  
Output Current Ripple - C3 = 0, C2 (pF) > 150/fosc (MHz)  
Negative Resistance on Terminals A and E  
4kΩ < R1 < 50kΩ, fosc< 3 MHz  
0.9 R1  
0.5  
R1  
1.1 R1  
5
Hyst  
Hysteresis at Detection Point C2 (Pf) > 150/fosc (MHz)  
%
* If the circuit is used at a frequency higher than 3MHz, it is recommended to connect a capacitor of 100pF between terminals E and D.  
OPERATING MODE  
supply current will be ICC = 10mA (pins G and D).  
The oscillation sustains when loss resistance Rpof  
tuned circuit becomes higher than R1. Then, the  
supply current will be ICC 1mA(pins G and D).  
Between terminals A and E, the integrated circuit  
acts like a negative resistance equalto the external  
resistor R1 connected between terminals B and H.  
The oscillation stops when loss resistance Rp of  
tuned circuit becomes smaller than R1. Then, the  
Eddy currents inducedby coil L1 in a metallic body,  
determine loss resistance Rp.  
2/6  
TDA0161  
TYPICAL APPLICATIONS  
fosc  
(kHz)  
R1  
(kΩ)  
C2  
pF  
Detection Range (*)  
L1 (µH)  
C1 (pF)  
2mm  
5mm  
30  
300  
2160  
(1)  
(2)  
(3)  
120  
470  
2650  
425  
50  
6.8  
27  
27  
47  
470  
10mm  
4700  
3300  
(*) Ingot steel target  
COIL CHARACTERISTICS  
Core  
Coil Former  
Wire**  
Number of Turns  
1
2
3
Cofelec  
1/2  
THOMSON Fils et Câbles  
Thomrex 14  
40  
432 FP 9 x 5 SE  
CAR 091 - 2  
(14/100mm)  
Cofelec  
432 FP 14 x 8 SE  
1/2  
CAR 142 - 2  
THOMSON Fils et Câbles  
Thomrex 14  
(14/100mm)  
100  
200  
Cofelec  
432 FP 26 x 16 SE  
1/2  
CAR 262 - 2  
THOMSON Fils et Câbles  
Thomrex 14  
(14/100mm)  
** The above results are obtained with single wire coil.When using Litz wire instead of single wire, the parallel resistance of the coil  
comes higher and the value of R1 may be increased, resulting in better sensitivity.  
be-  
3/6  
TDA0161  
MINIDIP PACKAGE MECHANICAL DATA  
mm  
inch  
TYP.  
0.131  
DIM.  
MIN.  
TYP.  
MAX.  
MIN.  
MAX.  
A
a1  
B
3.32  
0.51  
1.15  
0.020  
0.045  
0.014  
0.008  
1.65  
0.55  
0.065  
0.022  
0.012  
0.430  
0.384  
b
0.356  
0.204  
b1  
D
E
0.304  
10.92  
9.75  
7.95  
0.313  
e
2.54  
7.62  
7.62  
0.100  
0.300  
0.300  
e3  
e4  
F
6.6  
0.260  
0.200  
0.150  
0.060  
I
5.08  
3.81  
1.52  
L
3.18  
0.125  
Z
4/6  
TDA0161  
SO8 PACKAGE MECHANICAL DATA  
mm  
inch  
DIM.  
MIN.  
TYP.  
MAX.  
1.75  
0.25  
1.65  
0.85  
0.48  
0.25  
0.5  
MIN.  
TYP.  
MAX.  
0.069  
0.010  
0.065  
0.033  
0.019  
0.010  
0.020  
A
a1  
a2  
a3  
b
0.1  
0.004  
0.65  
0.35  
0.19  
0.25  
0.026  
0.014  
0.007  
0.010  
b1  
C
c1  
D
45° (typ.)  
4.8  
5.8  
5.0  
6.2  
0.189  
0.228  
0.197  
0.244  
E
e
1.27  
3.81  
0.050  
0.150  
e3  
F
3.8  
0.4  
4.0  
1.27  
0.6  
0.15  
0.157  
0.050  
0.024  
L
0.016  
M
S
8° (max.)  
5/6  
TDA0161  
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 useas critical components in life support devices or systems withoutexpress  
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 - Singa-  
pore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A.  
6/6  
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