VIN (1 V/DIV) VOUT
  • <ins id="dt68j"></ins>
    <tbody id="dt68j"></tbody>
  • <tbody id="dt68j"><span id="dt68j"></span></tbody>
    <label id="dt68j"></label>
    <ins id="dt68j"><th id="dt68j"></th></ins>
    參數(shù)資料
    型號: LMH6642MA/NOPB
    廠商: National Semiconductor
    文件頁數(shù): 10/33頁
    文件大?。?/td> 0K
    描述: IC OP AMP R-R LP 3V 75MA 8-SOIC
    產(chǎn)品培訓(xùn)模塊: High Speed Amplifiers for Video Applications - Part 1
    High Speed Amplifiers for Video Applications - Part 2
    High Speed Amplifiers for Video Applications - Part 3
    標(biāo)準(zhǔn)包裝: 95
    系列: PowerWise®
    放大器類型: 電壓反饋
    電路數(shù): 1
    輸出類型: 滿擺幅
    轉(zhuǎn)換速率: 135 V/µs
    -3db帶寬: 130MHz
    電流 - 輸入偏壓: 1.6µA
    電壓 - 輸入偏移: 1000µV
    電流 - 電源: 2.7mA
    電流 - 輸出 / 通道: 75mA
    電壓 - 電源,單路/雙路(±): 2.7 V ~ 12.8 V,±1.35 V ~ 6.4 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
    供應(yīng)商設(shè)備封裝: 8-SOIC
    包裝: 管件
    產(chǎn)品目錄頁面: 1270 (CN2011-ZH PDF)
    配用: LMH730227-ND - BOARD EVALUATION FOR SOIC PKG
    LMH730165-ND - BOARD EVALUATION
    LMH730216-ND - BOARD EVAL HS MONO AMP SOT23
    其它名稱: *LMH6642MA
    *LMH6642MA/NOPB
    LMH6642MA
    IN+
    IN-
    R
    V-
    V+
    V-
    VIN (1 V/DIV)
    VOUT (2 V/DIV)
    VS=±5V, VIN=5VPP
    AV=+5, RF=RL=2k
    2 V/DIV
    100 ns/DIV
    SNOS966P – MAY 2001 – REVISED MARCH 2013
    Figure 61. Overload Recovery Waveform
    INPUT AND OUTPUT TOPOLOGY
    All input / output pins are protected against excessive voltages by ESD diodes connected to V+ and V-rails (see
    Figure 62). These diodes start conducting when the input / output pin voltage approaches 1Vbe beyond V
    + or V-
    to protect against over voltage. These diodes are normally reverse biased. Further protection of the inputs is
    provided by the two resistors (R in Figure 62), in conjunction with the string of anti-parallel diodes connected
    between both bases of the input stage. The combination of these resistors and diodes reduces excessive
    differential input voltages approaching 2Vbe. The most common situation when this occurs is when the device is
    used as a comparator (or with little or no feedback) and the device inputs no longer follow each other. In such a
    case, the diodes may conduct. As a consequence, input current increases and the differential input voltage is
    clamped. It is important to make sure that the subsequent current flow through the device input pins does not
    violate the Absolute Maximum Ratings of the device. To limit the current through this protection circuit, extra
    series resistors can be placed. Together with the built-in series resistors of several hundred ohms, these external
    resistors can limit the input current to a safe number (i.e. < 10mA). Be aware that these input series resistors
    may impact the switching speed of the device and could slow down the device.
    Figure 62. Input Equivalent Circuit
    SINGLE SUPPLY, LOW POWER PHOTODIODE AMPLIFIER
    The circuit shown in Figure 63 is used to amplify the current from a photodiode into a voltage output. In this
    circuit, the emphasis is on achieving high bandwidth and the transimpedance gain setting is kept relatively low.
    Because of its high slew rate limit and high speed, the LMH664X family lends itself well to such an application.
    This circuit achieves approximately 1V/mA of transimpedance gain and capable of handling up to 1mApp from the
    photodiode. Q1, in a common base configuration, isolates the high capacitance of the photodiode (Cd) from the
    Op Amp input in order to maximize speed. Input is AC coupled through C1 to ease biasing and allow single
    supply operation. With 5V single supply, the device input/output is shifted to near half supply using a voltage
    divider from VCC. Note that Q1 collector does not have any voltage swing and the Miller effect is minimized. D1,
    tied to Q1 base, is for temperature compensation of Q1’s bias point. Q1 collector current was set to be large
    enough to handle the peak-to-peak photodiode excitation and not too large to shift the U1 output too far from
    mid-supply.
    18
    Copyright 2001–2013, Texas Instruments Incorporated
    Product Folder Links: LMH6642 LMH6643 LMH6644
    相關(guān)PDF資料
    PDF描述
    929710-01-07-RK CONN HEADER 14PS STR .100 DL TIN
    TSW-105-14-F-S CONN HEADER 5POS .100" SNGL
    929665-03-28-I CONN HEADER .100 DUAL STR 56POS
    TSW-103-25-S-S-RA CONN HEADER 3POS .100" SNGL R/A
    LT1491IS IC OP-AMP R-R IN/OUT QUAD 14SOIC
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    LMH6642MAX 功能描述:運(yùn)算放大器 - 運(yùn)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(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
    LMH6642MAX/NOPB 功能描述:運(yùn)算放大器 - 運(yùn)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(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
    LMH6642MF 功能描述:運(yùn)算放大器 - 運(yùn)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(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
    LMH6642MF/NOPB 功能描述:運(yùn)算放大器 - 運(yùn)放 Sgl 3V 130Mhz,R-R Out 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(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
    LMH6642MF/NOPB 制造商:Texas Instruments 功能描述:Operational Amplifier (Op-Amp) IC