AS2702-20(2001) データシートの表示（PDF） - austriamicrosystems AG
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AS2702-20 Datasheet PDF : 18 Pages
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AS-Interface Slave IC
AS2702 (SAP4.1)
F 6XSSO\ SLQ /7*3
Positive supply pin connected to positive AS-interface bus line and clamped relative to neg.
supply pin / ground LTGN as described under Recommended Operating Conditions.
VLTGP and ILTG specified under Recommended Operating Conditions as well.
6\PERO
VSIG
Z
3DUDPHWHU
VPP of sin2-data-pulses
on top of dc supply voltage
Input impedance
between 50 kHz and 300 kHz
PLQ
3
18
50
PD[
8
40
8QLW
V
pF
kOhm
mH
1RWH
CCDC = 100 nF
1
1
1
Note:
1
Input equivalent circuit is parallel arrangement of C, R and L
G %XIIHU SLQ &'&
An external buffer capacitor with a recommended value of 100 nF should be connected to this
pin to ensure a sufficiently high input impedance Z at power supply pin LTGP.
Voltage at this pin can be as high as VLTGP.
H 1RP 9 SRZHU VXSSO\ RXWSXW 8287
The supply output voltage at UOUT is directly derived from VLTGP and regulated to a level
with an offset of about - 6V relative to VLTGP.
UOUT provides bias to the sensors and actuators circuitry connected to the slave device as
well as to the LEDs connected to outputs LED1 and LED2.
UOUT is equipped with a thermal overload protection, which foresees that VUOUT is switched
off as soon as the slave device’s substrate temperature TJ passes a threshold value in the
range of (155 -+ 20)°C.
After TJ has come down and has passed a temperature threshold about (15 -+ 5)°C lower
than (155 -+ 20)°C and after a consecutive minimum delay of 1 s has elapsed, VUOUT is
switched on again.
6\PERO
3DUDPHWHU
PLQ
PD[
8QLW
VUOUT
Power supply output voltage VLTGP - VLTGP -
V
6.3V
5.3V
IUOUT
Load current
50
mA
VCOMOFF UOUT voltage level
9.5
10.5
V
below which data transmission
is inhibited
CUOUT
Buffer capacitor
10
µF
1RWH
1
2
Notes:
1
In case IUOUT > 40 mA and presence of sin2-data pulses on LTGP
Rev. C, January 2001
Page 6 of 18
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