CAV424 Datasheet, PDF (15/16 Pages) List of Unclassifed Manufacturers – Converter IC for Capacitive Signals

CAV424 - C/U transducer IC
with adjustable output voltage
BLOCK DIAGRAM AND PINOUT
CAV424
VTEMP
7
T Sensor
COSC
12
Reference
oscillator
RCR
2
RCM
3
RCOSC
1
VCC
11
Current reference
6 ^VM
CR
16
CM
14
Integrator 1
Integrator 2
Signal conditioning
LPOUT
5
10
15
13 4
GND
CL1
CL2 RL
Figure 11: Block diagram of CAV424
PIN NAME DESCRIPTION
1
RCOSC Oscillator current definition
2
RCR
Current setting for integrator C_R
3
RCM
Current setting for integrator C_M
4
RL
Gain setting
5
LPOUT Output
6
VM
Reference voltage 2.5V
7
VTEMP Temperature sensor
8
N.C.
Not connected
9
N.C.
Not connected
10 GND
IC ground
11 VCC
Supply voltage
12 COSC Oscillator capacitance
13 CL2
Low pass 2, corner frequency
14 CM
Measurement capacitance
15 CL1
Low pass 1, corner frequency
16 CR
Reference capacitance
Table 4: CAV424 pinout
RCOSC 1
RCR
2
RCM 3
RL
4
LPOUT 5
VM
6
VTEMP 7
N.C.
8
16 CR
15 CL1
14 CM
13 CL2
12 COSC
11 VCC
10 GND
9 N.C.
Figure 12: CAV424 pinout
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Phone: [phone]
Fax: [phone]
Internet:
http://www.analogmicro.de
Email: [e-mail]
July 2007 - Rev 1.2 - Page 15/16