CAV424 Datasheet, PDF (7/7 Pages) List of Unclassifed Manufacturers – Converter IC for Capacitive Signals

Converter IC for Capacitive Signals
CAV424
Application Example:
The following values are given:
• fixed capacitance C_X1:
50pF
• varying capacitance C_X2: 50 ... 100pF
Calculation:
With the equations given in the boundary conditions, the following values for the devices can be cal-
culated:
• C_OSC: 80pF
• C_L1:
10nF
• C_L2:
10nF
PINOUT
RCOSC 1
RCX1
2
RCX2
3
RL
4
LPOUT 5
VM
6
VTEMP 7
N.C.
8
16 CX1
15 CL1
14 CX2
13 CL2
12 COSC
11 VCC
10 ^GND
9 ^N.C.
Figure 5: pinout CAV424
DELIVERY
PIN NAME
1 RCOSC
2 RCX1
3 RCX2
4 RL
5 LPOUT
6 VM
7 VTEMP
8 N.C.
9 N.C.
10 GND
11 VCC
12 COSC
13 CL2
14 CX2
15 CL1
16 CX1
DESRIPTION
Current Definition of Ref. Oscillator
Current Adjustment of Cap. Integrator 1
Current Adjustment of Cap. Integrator 2
Gain Adjustment
Output
Reference Voltage 2.5V
Temperature Sensor
Not Connected
Not Connected
IC Ground
Supply Voltage
Capacitor of Reference Oscillator
Corner Frequency of Lowpass 2
Integrator Capacitor 2
Corner Frequency of Lowpass 1
Integrator Capacitor 1
The CAV424 is available in version:
• 16 pin DIL
• SO 16 (n) (maximum power dissipation P_D = 300mW)
• Dice on 5“ blue foil
The information provided herein is believed to be reliable; however, Analog Microelectronics assumes no responsibility for inaccuracies or omissions. Analog Microelectronics assumes no responsibility for the
use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licences to any of the circuits
described herein are implied or granted to any third party. Analog Microelectronics does not authorise or warrant any Analog Microelectronics product use in life support devices and/or systems.
analog microelectronics
January 2002
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