Notice that R
參數(shù)資料
型號: LMV821M5
廠商: National Semiconductor
文件頁數(shù): 14/38頁
文件大?。?/td> 0K
描述: IC OPAMP R-R LOW V LP SOT23-5
RoHS指令信息: LMV821M5 Material
標準包裝: 1
放大器類型: 通用
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 2 V/µs
增益帶寬積: 5.6MHz
電流 - 輸入偏壓: 100nA
電壓 - 輸入偏移: 3500µV
電流 - 電源: 300µA
電流 - 輸出 / 通道: 45mA
電壓 - 電源,單路/雙路(±): 2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: SC-74A,SOT-753
供應商設備封裝: SOT-23-5
包裝: 標準包裝
產(chǎn)品目錄頁面: 1269 (CN2011-ZH PDF)
其它名稱: LMV821M5DKR
SNOS032G – AUGUST 1999 – REVISED NOVEMBER 2013
(5)
Notice that R3 could also be calculated as 0.707 of Ra or R2.
The circuit was implemented and its cutoff frequency measured. The cutoff frequency measured at 2.92 kHz.
The circuit also showed good repeatability. Ten different LMV822 samples were placed in the circuit. The
corresponding change in the cutoff frequency was less than a percent.
TRI-LEVEL VOLTAGE DETECTOR
The tri-level voltage detector of Figure 44 provides a type of window comparator function. It detects three
different input voltage ranges: Min-range, Mid-range, and Max-range. The output voltage (VO) is at VCC for the
Min-range. VO is clamped at GND for the Mid-range. For the Max-range, VO is at Vee. Figure 45 shows a VO vs.
VI oscilloscope photo per the circuit of Figure 44.
Its operation is as follows: VI deviating from GND, causes the diode bridge to absorb IIN to maintain a clamped
condition (VO= 0V). Eventually, IIN reaches the bias limit of the diode bridge. When this limit is reached, the
clamping effect stops and the op amp responds open loop. The design equation directly preceding Figure 45,
shows how to determine the clamping range. The equation solves for the input voltage band on each side GND.
The mid-range is twice this voltage band.
Figure 44. Tri-level Voltage Detector
Copyright 1999–2013, Texas Instruments Incorporated
21
相關PDF資料
PDF描述
2-640388-3 CONN HEADER 23POS VERT .156 TIN
929836-01-27-RK CONN HEADER 54POS DUAL .100 TIN
9-146257-0-10 CONN HEADR BRKWAY .100 20POS STR
9-103329-0-32 CONN HEADR BRKWAY .100 32POS R/A
1-1318300-9 CONN HEADER .156 VERT 9POS TIN
相關代理商/技術參數(shù)
參數(shù)描述
LMV821M5/NOPB 功能描述:運算放大器 - 運放 Low Volt Sgl Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比(最小值):63 dB 輸入補償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
LMV821M5/NOPB 制造商:Texas Instruments 功能描述:Operational Amplifier (Op-Amp) IC
LMV821M5NOPB 制造商:Texas Instruments 功能描述:
LMV821M5X 功能描述:運算放大器 - 運放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比(最小值):63 dB 輸入補償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
LMV821M5X/NOPB 功能描述:運算放大器 - 運放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比(最小值):63 dB 輸入補償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel