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| CAV424 Datasheet, PDF (10/16 Pages) List of Unclassifed Manufacturers – Converter IC for Capacitive Signals | |||
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CAV424 - C/U transducer IC
with adjustable output voltage
ELECTRICAL SPECIFICATIONS
Tamb = 25°C, VCC = 5V (unless otherwise stated)
Parameter
Symbol
Conditions
Min.
Supply
Supply Voltage
Quiescent Current
VCC
Ratiometric range
4.75
ICC
Tamb = -40 ... 105°C, GLP = 1
0.6
Temperature Specifications
Operating
Tamb
-40
Storage
Tst
-55
Oscillator
Oscillator Capacitor Range
COSC
COSC = 1.6 # CM
16
Oscillator Frequency Range
fOSC
1
Oscillator Current
IOSC
ROSC = 250k)
9.5
Capacitive Integrator 1 and 2
Reference Capacitor Range
Reference Capacitive Integrator Current
Measurement Capacitor Sensitivity
Measurement Capacitor Range
Measurement Capacitor Integrator
Current
CR
IR
$ CM
CM
IM
RCR = 500k)
$CM = (CM,max(CM,min )/CM,min
CM,min ! CM ! CM,max
RCM = 500k)
10
4.75
5
10
4.75
Detection Frequency
fDET
CL1 = CL2 =1nF
Low Pass Stage
Adjustable Gain
GLP
1
Output Voltage
VLPOUT
VLPout = VDiff + VM ,
1.1
Corner Frequency 1
fC1
R01 = 20k), CL1 =1nF
Corner Frequency 2
fC2
R02 = 20k), CL2 =1nF
Resistive Load at PIN LPOUT
RLOAD
200
Capacitive Load at PIN LPOUT
CLOAD
Output voltage shift
VDIFF
VM = 2.5V
-1.4
Temperature Coefficient VDIFF (together dVDIFF /dT
with Input Stages)
Tamb = -40 ... 105°C
Internal Resistor 1 and 2
R01, R02
Temperature Coefficient R01,02
Ratiometric Error of VLPOUT
dR01,02 /dT
Tamb = -40 ... 105°C
RAT@VDIFF*
Voltage Reference VM
Voltage
VM vs. Temperature
VM
dVM /dT
Ratiometric to VCC
Tamb = -40...+105°C
Current
IVM
Source
IVM
Sink
Load Capacitance
CVM
80
Ratiometric Error of VM
RAT@VM**
* RAT @ VDIFF = 2 [1.05 VDIFF(VCC = 5V) â VDIFF(VCC = 5.25V)]/[VDIFF(VCC = 5V) + VDIFF(VCC = 5.25V)]
** RAT @ VM = 2 [1.05 VM(VCC = 5V) â VM(VCC = 5.25V)]/[VM(VCC = 5V) + VM(VCC = 5.25V)]
Typ.
Max.
Unit
5.00
5.25
V
1.0
1.4
mA
105
°C
125
°C
1600
pF
130
kHz
10
10.75
*A
1000
pF
5
5.38
*A
100
%
2000
pF
5
5.38
*A
2
kHz
+100
20
1.9
0.11
10
VCC â 1.1
8
8
50
1.4
V
kHz
kHz
k)
pF
V
ppm/°C
k)
10-3/°C
%FS
2.5
+20
100
0.007
V
+50
ppm/°C
16
*A
-16
*A
120
nF
%FS
Analog Microelectronics GmbH
An der Fahrt 13, D â 55124 Mainz
Phone: +49 (0)6131/91 073-0
Fax: +49 (0)6131/91 073-30
Internet:
http://www.analogmicro.de
Email: info@analogmicro.de
July 2007 - Rev 1.2 - Page 10/16
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