參數(shù)資料
型號(hào)： THS4503CDGKT
廠商： Texas Instruments, Inc.
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： WIDEBAND, LOW-DISTORTION FULLY DIFFERENTIAL AMPLIFIERS
中文描述： 寬帶，低失真全差動(dòng)放大器
文件頁(yè)數(shù)： 24/40頁(yè)
文件大?。?/td> 609K
代理商： THS4503CDGKT
THS4502
THS4503
SLOS352D
APRIL 2002
REVISED JANUARY 2004
www.ti.com
24
Figure 98
+
+
V
OCM
14 Bit/40 MSps
IN
IN
5 V
CM
5 V
V
S
10
μ
F
0.1
μ
F
THS4501
R
f
R
f
C
F
C
F
1
μ
F
R
g
R
g
R
T
R
S
ADS5421
0.1
μ
F
Using the THS4501 With the ADS5421
R
iso
R
iso
FULLY DIFFERENTIAL LINE DRIVERS
The THS4500 family of amplifiers can be used as
high-frequency, high-swing differential line drivers. Their
high power supply voltage rating (16.5 V absolute
maximum) allows operation on a single 12-V or a single
15-V supply. The high supply voltage, coupled with the
ability to provide differential outputs enables the ability to
drive 26 V
PP
into reasonably heavy loads (250
or
greater). The circuit in Figure 99 illustrates the THS4500
family of devices used as high speed line drivers. For line
driver applications, close attention must be paid to thermal
design constraints due to the typically high level of power
dissipation.
Figure 99
V
OCM
15 V
V
S
R
S
R
g
R
f
R
f
+
R
T
R
g
C
G
0.1
μ
F
C
G
THS4500/2
V
DD
C
S
C
S
R
L
V
OD
= 26 V
PP
R
iso
R
iso
Fully Differential Line Driver With High Output Swing
FILTERING WITH FULLY DIFFERENTIAL
AMPLIFIERS
Similar to their single-ended counterparts, fully differential
amplifiers have the ability to couple filtering functionality
with voltage gain. Numerous filter topologies can be based
on fully differential amplifiers. Several of these are outlined
in
A Differential Circuit Collection
, (literature number
SLOA064) referenced at the end of this data sheet. The
circuit below depicts a simple two-pole low-pass filter
applicable to many different types of systems. The first
pole is set by the resistors and capacitors in the feedback
paths, and the second pole is set by the isolation resistors
and the capacitor across the outputs of the isolation
resistors.
Figure 100
V
S
R
S
R
g1
R
f1
R
f2
+
R
T
+
V
O
R
iso
C
C
F2
C
F1
R
g2
R
iso
A Two-Pole, Low-Pass Filter Design Using a Fully
Differential Amplifier With Poles Located at:
P1 = (2
π
R
f
C
F
)
1
in Hz and P2 = (4
π
R
iso
C)
1
in Hz
Often times, filters like these are used to eliminate
broadband noise and out-of-band distortion products in
signal acquisition systems. It should be noted that the
increased load placed on the output of the amplifier by the
second low-pass filter has a detrimental effect on the
distortion performance. The preferred method of filtering
is using the feedback network, as the typically smaller
capacitances required at these points in the circuit do not
load the amplifier nearly as heavily in the pass-band.
SETTING THE OUTPUT COMMON-MODE
VOLTAGE WITH THE V
OCM
INPUT
The output common-mode voltage pin provides a critical
function to the fully differential amplifier; it accepts an input
voltage and reproduces that input voltage as the output
common-mode voltage. In other words, the V
OCM
input
provides the ability to level-shift the outputs to any voltage
inside the output voltage swing of the amplifier.
A description of the input circuitry of the V
OCM
pin is shown
below to facilitate an easier understanding of the V
OCM
interface requirements. The V
OCM
pin has two 50-k
resistors between the power supply rails to set the default
output common-mode voltage to midrail. A voltage
applied to the V
OCM
pin alters the output common-mode
voltage as long as the source has the ability to provide
enough current to overdrive the two 50-k
resistors. This
phenomenon is depicted in the V
OCM
equivalent circuit
diagram. The table contains some representative
examples to aid in determining the current drive
requirement for the V
OCM
voltage source. This parameter
is especially important when using the reference voltage
相關(guān)PDF資料
PDF描述
THS4504DGKR WIDEBAND, LOW-DISTORTION, FULLY DIFFERENTIAL AMPLIFIERS
THS4505DGKR WIDEBAND, LOW-DISTORTION, FULLY DIFFERENTIAL AMPLIFIERS
THS6002DWP DUAL DIFFERENTIAL LINE DRIVERS AND RECEIVERS
THS6002EVM DUAL DIFFERENTIAL LINE DRIVERS AND RECEIVERS
THS6182DRG4 LOW-POWER DISSIPATION ADSL LINE DRIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS4503CDGN 功能描述:特殊用途放大器 Hi-Sp Fully-Diff Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4503CDGNDT 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:WIDEBAND, LOW-DISTORTION FULLY DIFFERENTIAL AMPLIFIERS
THS4503CDGNG4 功能描述:特殊用途放大器 Hi-Sp Fully-Diff Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4503CDGNR 功能描述:特殊用途放大器 Hi-Sp Fully-Diff Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4503CDGNRG4 功能描述:特殊用途放大器 Hi-Sp Fully-Diff Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*