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參數(shù)資料
| 型號(hào)： | U6268B |
| 英文描述： | Side-Airbag Sensor Dual Interface |
| 中文描述： | 側(cè)安全氣囊傳感器雙接口 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 178K |
| 代理商： | U6268B |
U6268B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A1, 21-May-97
3 (12)
0
5
10
15
20
25
30
35
0
5
10
15
20
25
30
35
40
V
S
( V )
13322
o
22.4
21.4
9.4
8.2
7.7
5.4
4.9
5.7
8.5
11.3 12.0
28.6
32.6
Vout max
Vout min
V
Figure 4. Output voltage with tolerances vs. supply voltage
The data transmission from the external unit to the
interface IC is carried out on the same line by varying the
current level. The quiescent current consumption of the
external unit is about 5 to 15 mA. This current level is
interpreted as logic high level at CLL-pin. The external
unit can switch on an additional current of 30 mA,
interpreted by the interface as logic low. The current
changes within approximately 1 s, sufficient for a
transmission rate of about 60 kBaud, requiring a
transmission bandwidth of about 500 kHz for the current-
monitoring subcircuit and the OCM output. For a good
current transmission behaviour, the dynamic resistance of
OUTx may not exceed 12 inside the bandwidth range
(total of 15
for OUTx and RETURN).
The OUTx- voltage can be switched off by
ENABLEx = LOW to reset the external unit and to
reduce power dissipation during fault conditions.
The OUT pins are overtemperature- and short-circuit
protected. A reverse polarity diode at Pin V
S
(Pin 4) en-
sures that no current is fed back to the V
Batt
-system in the
case of a short between OUTx and V
Batt
. A minimum ca-
pacity of 33 nF is required at the pins OUTx .
ENABLE1, ENABLE2
ENABLEx is a microcontroller-compatible input which
switches the related output on or off.
Low or open circuit applied to ENABLEx switches
the related OUTx and RETURNx off (high imped-
ance). A sink current at Pin OUTx discharges the
capacitive load.
High applied to ENABLEx switches the related
OUTx and RETURNx on to supply the external unit.
OCM1, OCM2
The output current of OUTx is monitored with a transmis-
sion factor of 0.1 to the OCMx. With a resistor from OCM
to GND, the current is converted to a voltage. The electri-
cal characteristics are specified by R
OCM
= 750 . The
CLL-current threshold, the OUT-current limitation and
the OUT-current detection can be changed by varying
R
OCM
in a range from 500 to 1 k .
The current monitoring enables to detect overcurrent
conditions at OUTx (short circuit to GND or RETURNx)
and to detect low current conditions at OUTx (short cir-
cuit to V
Batt
or open load).
The internal pull-down current at the OUTx creates no
OCMx-current. During enable, the minimum voltage at
OCMx is the saturation voltage of an internal NPN-tran-
sistor with typically 0.1 V. The maximum voltage at
OCM is limited by an internal clamping diode to 5.3 V.
CLL1, CLL2
The
current at Pin OUTx is logical evaluated and ready
to use for a microcontroller input. With this stage, the
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| U6268B-FP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| U6268B-MFPG3 | 功能描述:IC INTERFACE DUAL SENSOR 16-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測器接口 系列:* 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| U6268B-MFPG3Y | 功能描述:射頻無線雜項(xiàng) Sat.Interface (Airbag) RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| U629029B | 制造商: 功能描述: 制造商:undefined 功能描述: |
| U62H256A | 制造商:ZMD 制造商全稱:Zentrum Mikroelektronik Dresden AG 功能描述:AUTOMOTIVE FAST 32K X 8 SRAM |
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