Q67000-A2305 [INFINEON]
Proximity Switch; 接近开关
| 型号： | Q67000-A2305 |
| 厂家： | 
Infineon |
| 描述： | Proximity Switch |
| 文件： | 总7页 (文件大小：116K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Proximity Switch
TCA 305
TCA 355
Bipolar IC
Features
● Lower open-loop current consumption; I
● Lower output saturation voltage
S
< 1 mA
● The temperature dependence of the switching
distance is lower and compensation of the resonant
circuit TC (temperature coefficient) is easier
● The sensitivity is higher, so that larger switching
distances are possible and coils of a lower quality can
be used
P-DSO-8-1
● The switching hysteresis remains constant as regards
temperature, supply voltage and switching distance
● The TCA 305 even functions without external
integrating capacitor. With an external capacitor (or
with RC combination) good noise immunity can be
achieved
● The outputs are temporarily short-circuit proof (approx.
P-DIP-14-1
10 s to 1 min depending on package)
● The outputs are disabled when V < approx. 4.5 V and
S
are enabled when the oscillator stabilizes
(from VS min = 5 V)
● Higher switching frequencies can be obtained
● Miniature package
P-DSO-14-1
Type
Ordering Code
Q67000-A2291
Q67000-A2305
Q67000-A2444
Package
TCA 305 A
TCA 305 G
TCA 355 G
P-DIP-14-1
■
P-DSO-14-1 (SMD)
P-DSO-8-1 (SMD)
■ Not for new design
01.96
Semiconductor Group
1
TCA 305
TCA 355
TCA 305 A
TCA 355 G
TCA 305 G
Pin Configurations (top view)
The devices TCA 305 and TCA 355 contain all the functions necessary to design inductive
proximity switches. By approaching a standard metal plate to the coil, the resonant circuit is
damped and the outputs are switched.
Operation Schematic: see TCA 205
The types TCA 305 and TCA 355 have been developed from the type TCA 205 and are out-
standing for the following characteristics:
Logic Functions
Oscillator
Outputs
Q
not damped
damped
H
L
L
H
Semiconductor Group
2
TCA 305
TCA 355
Block Diagram
Standard Turn-ON Delay Referred to T
A
= 25 ˚C
Semiconductor Group
3
TCA 305
TCA 355
Absolute Maximum Ratings
Parameter
Symbol Limit Values
Unit
Supply voltage
Output voltage
V
V
S
35
35
V
V
Q
Output current
I
Q
50
0
mA
Ω
Distance, hysteresis resistance
Capacitances
R
Di, RHy
C
I
, C
D
5
µF
Junction temperature
Storage temperature range
T
T
j
150
– 55 to 125
˚C
˚C
stg
Thermal resistance
system - air TCA 305 A
TCA 305 G
85 (135)2)
140 (200)2)
R
R
th SA
th SA
K/W
K/W
Operating Range
Supply voltage
5 to 303)
V
S
V
Oscillator frequency
Ambient temperature
f
OSC
0.015 to 1.5
– 25 to 85
MHz
˚C
T
A
Characteristics
VS
= 12 V, T = – 25 to 85 ˚C
A
Parameter
Symbol
Limit Values
typ. max.
Unit Test
Condition
min.
Open-loop
current consumption
IS
0.6
0.9
(1.0)2)
mA
outputs open
Reference voltage1)
L-output voltage
per output
VREF
VQ L
VQ L
VQ L
3.2
V
V
V
V
I
REF< 10 µA
IQ L = 5 mA
IQ L = 25 mA
IQ L = 50 mA
0.04 0.15
0.10 0.35
0.22 0.75
H-output current per output
IQ H
10
µA
VQ H = 30 V
Threshold at 3
Hysteresis at 3
V
V
S 3
Hy
2.1
0.5
V
V
0.4
0.6
Turn-ON delay1)
tD ON
– 25 % 600 – 25 % ms/µF T
A
= 25 ˚C
Switching frequency w/o C
I
fS
5
kHz
1)
TCA 305 only
2)
Values in parenthesis apply to TCA 355 only
3)
Operation at voltages less than 5 V (between approx. 2.5 and 5 V) is possible, if VREF is connected to VS. In
this case VREF is no longer internally stabilized. Additionally, the pin "turn-on delay" is to be applied as follows:
If no turn-on delay is needed, this pin has to be connected to VS. If, however, a turn-on delay is required, the
charge current for DD has to be adjusted with an external resistor between this pin and VS (recommended
Ω
value 390 k ).
Semiconductor Group
4
TCA 305
TCA 355
Turn-ON Delay for TCA 305 A; G
Oscilator
Integrating Capacitor
Outputs
Schematic Circuit Diagram
Semiconductor Group
5
TCA 305
TCA 355
Application Circuit
Semiconductor Group
6
TCA 305
TCA 355
L0, C
0
Resonant circuit
R
Hy
Hysteresis adjustment
Distance adjustment
RDi
D
Temperature compensation of the resonant circuit; possibly with series
resistance for the purpose of adjustment. The diode is not absolutely necessary.
Whether it is used or not depends on the temperature coefficient of the resonant
circuit.
RI
; C
I
Integration element. At pin 3 (integrating capacitance) we recommend a
capacitor of typ. 1 nF. To increase noise immunity this capacitor can be
Ω
substituted by an RC circuit with, e.g., R
I
= 1 M and C = 10 nF.
I
CD
Delay capacitor
Dimensioning Examples in Accordance with CENELEC Standard (flush)
M 12 M 18 M 30
M 33 (7.35 × 3.6) mm N 22 (14.4 × 7.5) mm N 22 (25 × 8.9) mm
Ferrite pot core
Number of turns
100
80
100
Cross section of wire 0.1 CuL
20 × 0.05
268 µH
1.2 nF
10 × 0.1
585 µH
3.3 nF
L
0
206 µH
C
(STYROFLEX®)
0
1000 pF
appr. 350 kHz
4 mm
appr. 280 kHz
8 mm
appr. 115 kHz
15 mm
fOSC
Sn
Ω
Ω
Ω
Ω
Ω
RA (Metal)
8.2 k + 330
33 k
22 k + 2.7 k
CD
100 nF
100 nF
100 nF
Semiconductor Group
7
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