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參數資料
| 型號： | L9700D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數： | 4/8頁 |
| 文件大小： | 459K |
| 代理商： | L9700D |
Figure 2 : Dynamical Input Characteristics (continued) .
2b
APPLICATION INFORMATION
Most integrated circuits, both HNMOS and bipolar,
are very sensitive to positive and negative overvol-
tages on the supply and at the inputs.
These transients occur in large numbers and with
different magnitudes in the automotive environment,
making adequate protection for devices ai-med at it
indispensible.
Overvoltages on the supply line are faced through
high voltage integration technologies or through ex-
ternal protection (transil, varistor).
Signal inputs are generally protected using clamp
diodes to the supply and ground, and a current limi-
ter resistor. However, such solutions do not always
completely satisfy the protection specifications in
terms of intervention speed, negative clamping and
current leakage high enough to change analog si-
gnals.
The L9700 device combines a high intervention
speed with a high precision positive and negative
clamp and a low current leakage providing the opti-
mal solution to the problems of the automotive en-
vironment.
The high intervention speed, due to the pre-bias of
the limiter stage and internal feedback, limits the
voltage overshoot and avoid the use of external ca-
pacitors for the limitation of the transient rise times.
Figure 3 illustrates a typical automotive application
scheme. The resistor RS limits the input current of
the device and is therefore dimensioned considering
the characteristics of the transients to be eliminated.
Consequently :
Vtransient Peak
RS =
IIN MAX
The CIN capacitors must be used only on analog in-
puts because they present a low impedance during
the sampling period.
L9700
4/8
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相關代理商/技術參數 |
參數描述 |
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| L9700D013TR | 功能描述:TVS二極管陣列 Hex Precision Limit RoHS:否 制造商:Littelfuse 極性: 通道:4 Channels 擊穿電壓: 鉗位電壓:11.5 V 工作電壓:2.5 V 峰值浪涌電流:20 A 安裝風格:SMD/SMT 端接類型:SMD/SMT 系列: 最小工作溫度:- 40 C 最大工作溫度:+ 85 C |
| L9700D-E | 功能描述:低壓差穩壓器 - LDO AED Smartpower SO 08 .15 JEDEC RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L9700DTR-E | 功能描述:低壓差穩壓器 - LDO AED Smartpower SO 08 .15 JEDEC RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L9703 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:OCTAL GROUND CONTACT MONITORING CIRCUIT |
| L9703D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:OCTAL GROUND CONTACT MONITORING CIRCUIT |
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