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參數資料
| 型號： | LMV7272TLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 比較器 |
| 英文描述： | Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
| 中文描述： | COMPARATOR, 4000 uV OFFSET-MAX, PBGA8 |
| 封裝： | MICRO, SMD-8 |
| 文件頁數： | 13/16頁 |
| 文件大小： | 494K |
| 代理商： | LMV7272TLX |
Typical Applications
UNIVERSAL LOGIC LEVEL SHIFTER
The output of LMV7275 is an unconnected drain of an
NMOS device, which can be pulled up, through a resistor, to
any desired output level within the permitted power supply
range. Hence, the following simple circuit works as a univer-
sal logic level shifter, pulling up the signal to the desired
level.
POSITIVE PEAK DETECTOR
A positive peak detect circuit is basically a comparator oper-
ated in a unity gain follower configuration, with a capacitor as
a load to maintain the highest voltage. A diode is added at
the output to prevent the capacitor from discharging through
the pull-up resistor, and a 1M
resistor added in parallel to
the capacitor to provide a high impedance discharge path.
When the input V
increases, the inverting input of the
comparator follows it, thus charging the capacitor. When it
decreases, the cap discharges through the 1M
resistor.
The decay time can be modified by changing the resistor.
The output should be accessed through a follower circuit to
prevent loading.
OR’ING THE OUTPUT
Since the output is an unconnected NMOS drain, many
drains can be tied together, pulled up to V
DD
by a single
resistor to provide an output OR’ing function. If any of the
comparator outputs is pulled low the output V
O
goes down.
20064052
FIGURE 6. Logic Level Shifter
20064054
FIGURE 7. Positive Peak Detector
20064053
FIGURE 8. OR’ing the Outputs
L
www.national.com
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相關PDF資料 |
PDF描述 |
|---|---|
| LMV7275 | Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
| LMV7275MF | Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
| LMV7275MFX | Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
| LMV7275MG | Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
| LMV7275MGX | Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LMV7272TLX/NOPB | 功能描述:校驗器 IC RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| LMV7275 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input |
| LMV7275IDCKRQ1 | 功能描述:Comparator General Purpose Open Drain SC-70-5 制造商:texas instruments 系列:汽車級，AEC-Q100 包裝:剪切帶（CT） 零件狀態:有效 類型:通用 元件數:1 輸出類型:開路漏極 電壓 - 電源，單/雙（±）:1.8 V ~ 5.5 V 電壓 - 輸入失調（最大值）:4mV @ 5V 電流 - 輸入偏置（最大值）:0.01μA @ 5V 電流 - 輸出（典型值）:34mA 電流 - 靜態（最大值）:14μA CMRR，PSRR（典型值）:78dB CMRR，80dB PSRR 傳播延遲（最大值）:2.1μs 滯后:- 工作溫度:-40°C ~ 85°C 封裝/外殼:5-TSSOP，SC-70-5，SOT-353 安裝類型:表面貼裝 供應商器件封裝:SC-70-5 標準包裝:1 |
| LMV7275MF | 功能描述:校驗器 IC RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| LMV7275MF/NOPB | 功能描述:校驗器 IC 1.8V Comp W/Open Drain RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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