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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： | 5/8頁 |
| 文件大小： | 459K |
| 代理商： | L9700D |
Figure 3 : Typical Application.
The minimum value for CIN is determined by the ac-
curacy required, the time taken to sample the input
and the input impedance during that time, while the
maximum value is determined by the required fre-
quency response and the value of RS.
Thus for a resistive input A/D connector where :
TS =
Sample time (Seconds)
RD =
Device input resistance (Ohms)
VIN =
Input voltage (Volts)
k
=
Required accuracy (%)
Q1 =
Charge on capacitor before sampling
Q2 =
Charge on capacitor after sampling
ID =
Device input current (Amps)
Thus :
k
Q1
Q1– Q2 =
100
but
Q1 = CIN VIN
and
Q1– Q2 = ID – TS
k
CIN – VIN
so that
ID TS =
100
ID
TS
and
CIN (min) =
Farad
VIN
k
100
TS
so
CIN (min) =
Farad
k
RD
The calculation for a sample and hold type convertor
is even simpler :
k
=
Required accuracy (%)
CH =
Hold capacitor (Farad)
100
CH
CIN (min) =
Farad
k
L9700
5/8
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相關代理商/技術參數 |
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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 |
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| L9703D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:OCTAL GROUND CONTACT MONITORING CIRCUIT |
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