參數(shù)資料
型號(hào): LMH6619MA/NOPB
廠(chǎng)商: National Semiconductor
文件頁(yè)數(shù): 19/38頁(yè)
文件大小: 0K
描述: IC AMP DUAL RRIO 130MHZ 8-SOIC
標(biāo)準(zhǔn)包裝: 95
系列: PowerWise®
放大器類(lèi)型: 電壓反饋
電路數(shù): 2
輸出類(lèi)型: 滿(mǎn)擺幅
轉(zhuǎn)換速率: 57 V/µs
增益帶寬積: 58MHz
-3db帶寬: 140MHz
電流 - 輸入偏壓: 1.5µA
電壓 - 輸入偏移: 100µV
電流 - 電源: 1.45mA
電流 - 輸出 / 通道: 35mA
電壓 - 電源,單路/雙路(±): 2.7 V ~ 11 V,±1.35 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類(lèi)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(yè)面: 1270 (CN2011-ZH PDF)
配用: 551600075-001-ND - BOARD FOR SOIC LMH6612/19
551600074-001-ND - BOARD FOR SOIC LMH6612/19
其它名稱(chēng): LMH6619MA
0.1 PF
1 PF
0.1 PF
1 PF
820 pF
1.02 k:
62 pF
1.02 k:
V
+
-
+
V
-
510:
OUTPUT
0.1 PF
1 PF
0.1 PF
1 PF
330 pF
1.05 k:
150 pF
V
+
-
+
523:
V
-
INPUT
1.05 k:
LMH6619
+
-
VIN
R1
RG
RF
VOUT
LMH6618
R2
V
+
V
+
SNOSAV7E – AUGUST 2007 – REVISED OCTOBER 2012
4. VOUTMID = 2V + (4V – 2V)/2 = 3V
5. Gain = (4V – 2V)/(1V – 0V) = 2
6.
ΔVOUT = 3V – 2 x 0.5V = 2
7. For the example the supply voltage will be +5V.
8. Noise gain = 2 + 2/5V = 2.4
9. RF = 2 k
10. R1 = 2 k/2 = 1 k
11. R2 = 2 k/(2.4-2) = 5 k
12. RG = 2 k/(2.4 – 1) = 1.43 k
Figure 68. DC Level Shifting
4th ORDER MULTIPLE FEEDBACK LOW-PASS FILTER
Figure 69 shows the LMH6619 used as the amplifier in a multiple feedback low pass filter. This filter is set up to
have a gain of +1 and a
3 dB point of 1 MHz. Values can be determined by using the WEBENCH Active Filter
Designer found at webench.ti.com.
Figure 69. 4th Order Multiple Feedback Low-Pass Filter
CURRENT SENSE AMPLIFIER
With it’s rail-to-rail input and output capability, low VOS, and low IB the LMH6618 is an ideal choice for a current
sense amplifier application. Figure 70 shows the schematic of the LMH6618 set up in a low-side sense
configuration which provides a conversion gain of 2V/A. Voltage error due to VOS can be calculated to be VOS x
(1 + RF/RG) or 0.75 mV x 20.6 = 15.5 mV. Voltage error due to IO is IO x RF or 0.26 A x 1 k = 0.26 mV. Hence
total voltage error is 15.5 mV + 0.26 mV or 15.7 mV which translates into a current error of 15.7 mV/(2 V/A) = 7.9
mA.
26
Copyright 2007–2012, Texas Instruments Incorporated
Product Folder Links: LMH6618 LMH6619
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LMH6619QMAKE/NOPB 功能描述:運(yùn)算放大器 - 運(yùn)放 Auto Dual 130MHz 1.25mA RRIO Op Amps 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
LMH6619QMAKX/NOPB 功能描述:運(yùn)算放大器 - 運(yùn)放 Auto Dual 130MHz 1.25mA RRIO Op Amps 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