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參數(shù)資料
| 型號： | CAV414 |
| 廠商： | AME, Inc. |
| 英文描述： | Converter IC for Capacitive Signals |
| 中文描述： | 轉換器集成電路電容信號 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 78K |
| 代理商： | CAV414 |
Converter IC for Capacitive Signals
CAV414
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: http://www.analogmicro.de
January 2001
Phone:
Fax:
E–Mail:
+49 (0)6131/91 073 – 0
+49 (0)6131/91 073 – 30
info@analogmicro
.
de
1/6
Rev. 2.1
FEATURES
Wide Supply Voltage Range: 6...35V
Wide Operating Temperature Range:
–40°C...+85°C
High Detection Sensitivity of Relative
Capacitive Changes: 5% – 100%
Detection Frequency up to 2kHz
Adjustable Voltage Range:
0...5/10V, other
Reference Voltage Source: 5V
Protection against Reverse Polarity
Output Current Limitation
Adjustable with only two Resistors
APPLICATIONS
Industrial Process Control
Distance Measurement
Pressure Measurement
Humidity Measurement
Level Control
GENERAL DESCRIPTION
The CAV414 is an universal multipurpose in-
terface for capacitive sensors and contains the
complete signal processing unit on chip. The
CAV414 detects the relative capacitive change
of a measuring capacity to a fixed reference
capacity. The IC is optimised for capacities in
the wide range of 10pF to 2nF with possible
changes of capacity of 5% to 100% of the ref-
erence capacity.
The voltage output is formed by a high accu-
racy instrumentation amplifier in combination
with an operational amplifier.
With only a few external components, the
CAV414 is suitable for a great variety of ap-
plications including a zero compensation.
DELIVERY
DIL16 packages (samples)
SO16(n) packages
Dice on 5“ blue foil
BLOCK DIAGRAM
CAV414
Integrator 1
Integrator 2
Voltage/Current
Reference
IA
12
16
14
15
13
4
5
6
3
1
11
7
9
10
VCC
GAIN
2
OP
8
VOUT
GND
VREF
RCOSC
RCX
2
RCX
1
VM
LPOUT
RL
CL
2
CL
1
CX
2
CX
1
COSC
Reference
Oscillator
Signal Conditioning
Figure 1
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