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CAV414 Scheda tecnica(PDF) 2 Page - Analog Microelectronics

Il numero della parte CAV414
Spiegazioni elettronici  Converter IC for Capacitive Signals
PDF  6 Pages
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Produttore elettronici  AME [Analog Microelectronics]
Homepage  http://www.ame.com.tw/
Logo AME - Analog Microelectronics

CAV414 Scheda tecnica(HTML) 2 Page - Analog Microelectronics

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Converter IC for Capacitive Signals
CAV414
analog microelectronics
January 2001
2/6
ELECTRICAL SPECIFICATIONS
Tamb = 25°C, VCC = 24V, IREF = 1mA (unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply
Supply Voltage
VCC
635
V
Quiescent Current
ICC
Tamb = –40 ... 85°C, IREF = 0mA
1.55
2.7
mA
Temperature Specifications
Operating
Tamb
–40
85
°C
Storage
Tst
–55
125
°C
Junction
Tj
150
°C
Thermal Resistance
Θ
ja
DIL16 plastic package
70
°C/W
Θ
ja
SO16 (n) plastic package
140
°C/W
Reference Oscillator
Oscillator Capacitor Range
COSC
COSC = 1.6 ⋅ CX1
14
1800
pF
Oscillator Frequency Range
fOSC
1
130
kHz
Oscillator Current
IOSC
ROSC = 200kΩ
9.5
10
10.75
µA
Capacitive Integrator 1 and 2
Capacitor Range 1
CX1
10
1000
pF
Capacitive Integrator Current 1
IX1
RCX1 = 400kΩ
4.75
5
5.38
µA
Capacitor Detection Sensitivity
∆ C
X
∆ C
X = (CX2 − CX1 )/CX1
5
100
%
Capacitor Range 2
CX2
CX2 = CX1 ⋅ (1 + ∆ CX )
10.5
2000
pF
Capacitive Integrator Current 2
IX2
RCX2 = 400kΩ
4.75
5
5.38
µA
Detection Frequency
fDET
CL1 = CL2 =1nF
2
kHz
Lowpass
Adjustable Gain
GLP
110
Output Voltage
VLPOUT
VM –0.4
VM +0.4
V
Corner Frequency 1
fC1
R01 = 20kΩ, CL1 =1nF
10
kHz
Corner Frequency 2
fC2
R02 = 20kΩ, CL2 =1nF
10
kHz
Resistive Load at PIN LPOUT
RLOAD
200
k
Ω
Capacitive Load at PIN LPOUT
CLOAD
50
pF
Temperature Coefficient VDIFF (together
with Input Stages)
dVDIFF /dTVDIFF = VLPOUT - VM ,
Tamb = –40 ... 85°C
±100
ppm/°C
Internal Resistor 1 and 2
R01, R02
20
k
Ω
Temperature Coefficient R01,02
dR01,02 /dTTamb = –40 ... 85°C
1.9
10
-3/°C
Power Supply Rejection Ratio
(together with Input Stages)
PSRR
IOUT ≤ 1mA
80
90
dB
Voltage Reference VREF
Voltage
VREF
4.75
5
5.25
V
Current
IREF
09
mA
VREF vs. Temperature
dVREF /dTTamb = –40...+85°C
±
90
±
140
ppm/°C
Line Regulation
dVREF /dVVcc = 6V...35V
30
80
ppm/V
dVREF / dV
Vcc = 6V...35V, IREF ≈ 4mA
60
150
ppm/V
Load Regulation
dVREF /dI
0.05
0.10
%/mA
dVREF /dI
IREF ≈ 4mA
0.06
0.15
%/mA
Load Capacitance
CREF
1.9
2.2
5.0
µF



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