欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: THS4281DR
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
封裝: GREEN, PLASTIC, SOIC-8
文件頁數: 11/37頁
文件大小: 1063K
代理商: THS4281DR
_
+
Rg
2.49 k
RT
1.24 k
0.1
F
6.8
F
VS
50-
Source
+
VI
0.1
F
6.8
F
+
+VS
VO
CT
0.1
F
Rf
2.49 k
RM
51.1
To Load
_
+
49.9
50-
Source
VI
+VS
VO
Rf
2 k
Rg
2 k
+VS
2
+VS
2
_
+
2 k
50-
Source
VI
VS
VO
Rf
2 k
51.1
Rg
RT
+VS
2
+VS
2
To Load
RT
CT
Power Supply Bypassing
Not Shown For Simplicity
www.ti.com
SLOS432A – APRIL 2004 – REVISED NOVEMBER 2009
WIDEBAND, INVERTING OPERATION
Another consideration in inverting amplifier design is
setting the bias current cancellation resistor (RT) on
Figure 71 shows a typical inverting configuration
the noninverting input. If the resistance is set equal to
where the input and output impedances and noise
the total dc resistance presented to the device at the
gain from Figure 68 are retained with an inverting
inverting terminal, the output dc error (due to the
circuit gain of –1 V/V.
input bias currents) is reduced to the input offset
current multiplied by RT. In Figure 71, the dc source
impedance presented at the inverting terminal is 2.49
k
|| (2.49 k + 25.3 ) ≈ 1.24 k. To reduce the
additional high-frequency noise introduced by the
resistor at the noninverting input, RT is bypassed with
a 0.1-
μF capacitor to ground (CT).
SINGLE-SUPPLY OPERATION
The THS4281 is designed to operate from a single
2.7-V to 16.5-V power supply. When operating from a
single power supply, care must be taken to ensure
the input signal and amplifier are biased appropriately
to allow for the maximum output voltage swing and
not violate VICR. The circuits shown in Figure 72
shows
inverting
and
noninverting
amplifiers
configured for single-supply operation.
Figure 71. Wideband, Inverting Gain
Configuration
In the inverting configuration, some key design
considerations must be noted. One is that the gain
resistor (Rg) becomes part of the signal channel input
impedance. If the input impedance matching is
desired (which is beneficial whenever the signal is
coupled through a cable, twisted pair, long PCB
trace, or other transmission line conductors), Rg may
be set equal to the required termination value and Rf
adjusted to give the desired gain. However, care
must be taken when dealing with low inverting gains,
as the resulting feedback resistor value can present a
significant load to the amplifier output. For example,
an inverting gain of 2, setting Rg to 49.9 for input
matching, eliminates the need for RM but requires a
100-
feedback
resistor.
The
100-
feedback
resistor, in parallel with the external load, causes
excessive
loading
on
the
amplifier
output.
To
eliminate this excessive loading, it is preferable to
increase both Rg and Rf values, as shown in
Figure 71, and then achieve the input matching
Figure 72. DC-Coupled Single Supply Operation
impedance with a third resistor (RM) to ground. The
total input impedance is the parallel combination of
Rg and RM.
Copyright 2004–2009, Texas Instruments Incorporated
19
Product Folder Link(s): THS4281
相關PDF資料
PDF描述
THS4281D 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
THS4281DBVRG4 1 CHANNEL, VIDEO AMPLIFIER, PDSO5
THS4281DBVTG4 1 CHANNEL, VIDEO AMPLIFIER, PDSO5
THS4281DGKRG4 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
THS4281DRG4 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
相關代理商/技術參數
參數描述
THS4281DRG4 功能描述:高速運算放大器 Very Lo-Pwr R-To-R I/O Voltage Feedback RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
THS4281EVM 功能描述:放大器 IC 開發工具 THS4281 Eval Mod RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
THS4302 制造商:TI 制造商全稱:Texas Instruments 功能描述:WIDEBAND FIXED-GAIN AMPLIFIER
THS4302EVM 功能描述:放大器 IC 開發工具 THS4302 Eval Mod RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
THS4302RGTR 功能描述:高速運算放大器 Wideband Fixed Gain Amplifier RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
主站蜘蛛池模板: 延安市| 安国市| 宁河县| 镇康县| 呼玛县| 南丹县| 吴堡县| 呼图壁县| 乌兰浩特市| 白山市| 白城市| 广安市| 祁东县| 吴江市| 康马县| 大英县| 兴安盟| 永安市| 安宁市| 江西省| 台东县| 沙洋县| 墨竹工卡县| 嘉鱼县| 河池市| 昭平县| 隆安县| 东乡族自治县| 怀集县| 顺昌县| 海城市| 丰城市| 贺州市| 邛崃市| 巴东县| 海林市| 崇礼县| 彝良县| 民县| 陆丰市| 平阳县|