U6268B Datasheet, PDF (12/14 Pages) TEMIC Semiconductors – Side-Airbag Sensor Dual Interface

Figure 7-3. Data Transmission
V_ENABLEx
V_OUTx
13 V
30 µs
I_OUTx^{60 mA}
40 mA
10 mA
V_OCMx
4.7 V
3.0 V
0.75 V
V_CLLx
5.0 V
0V
overcurrent
charge
time
C_OUT =
47 nF
overcurrent
200 mV
current
modulation
from sensor
50 µs
Figure 7-4. Application Circuit
+V_Batt
V_CC = 5 V
100 nF
22 mF
4
I/O
V_S
14 _CLL1
3
Out1
15
Interface1
I/O
Enable1
13
OCM1
750
2
Return1
V_CC = 5 V
U6268B
47 nF
47 nF
Out2 ⁵
I/O
11 _CLL2
10
Interface2
47 nF
I/O
Enable2
12
OCM2
Return2 ⁷
750
GND
SC
1, 8,
6
47 nF
9, 16
22 nF
discharge of C_OUT = 47 nF
with internal current
150 µs
t
Sensor 1
5V
Sensor 2
5V
12 U6268B
4808B–AUTO–09/05