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| 型號(hào)： | EL5367IU-T7 |
| 廠商： | Intersil |
| 文件頁(yè)數(shù)： | 10/11頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP CFA TRIPLE 1GHZ 16-QSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 放大器類(lèi)型： | 電流反饋 |
| 電路數(shù)： | 3 |
| 轉(zhuǎn)換速率： | 6000 V/µs |
| -3db帶寬： | 1GHz |
| 電流 - 輸入偏壓： | 8.5µA |
| 電壓 - 輸入偏移： | 500µV |
| 電流 - 電源： | 8.5mA |
| 電流 - 輸出 / 通道： | 200mA |
| 電壓 - 電源，單路/雙路(±)： | 5 V ~ 12 V，±2.5 V ~ 6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
8
FN7457.1
November 9, 2004
Applications Information
Product Description
The EL5367 is a current-feedback operational amplifier that
offers a wide -3dB bandwidth of 1GHz and a low supply
current of 8.5mA per amplifier. The EL5367 works with
supply voltages ranging from a single 5V to 10V and it is also
capable of swinging to within 1V of either supply on the
output. Because of their current-feedback topology, the
EL5367 does not have the normal gain-bandwidth product
associated with voltage-feedback operational amplifiers.
Instead, its -3dB bandwidth remains relatively constant as
closed-loop gain is increased. This combination of high
bandwidth and low power, together with aggressive pricing
make the EL5367 an ideal choice for many low-power/high-
bandwidth applications such as portable, handheld, or
battery-powered equipment.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high frequency device, good printed circuit
board layout is necessary for optimum performance. Low
impedance ground plane construction is essential. Surface
mount components are recommended, but if leaded
components are used, lead lengths should be as short as
possible. The power supply pins must be well bypassed to
reduce the risk of oscillation. The combination of a 4.7F
tantalum capacitor in parallel with a 0.01F capacitor has
been shown to work well when placed at each supply pin.
For good AC performance, parasitic capacitance should be
kept to a minimum, especially at the inverting input. (See the
Capacitance at the Inverting Input section) Even when
ground plane construction is used, it should be removed
from the area near the inverting input to minimize any stray
capacitance at that node. Carbon or Metal-Film resistors are
acceptable with the Metal-Film resistors giving slightly less
peaking and bandwidth because of additional series
inductance. Use of sockets, particularly for the SO package,
should be avoided if possible. Sockets add parasitic
inductance and capacitance which will result in additional
peaking and overshoot.
Capacitance at the Inverting Input
Any manufacturer’s high-speed voltage- or current-feedback
amplifier can be affected by stray capacitance at the
inverting input. For inverting gains, this parasitic capacitance
has little effect because the inverting input is a virtual
ground. But for non-inverting gains, this capacitance (in
conjunction with the feedback and gain resistors) creates a
pole in the feedback path of the amplifier. This pole, if low
enough in frequency, has the same destabilizing effect as a
zero in the forward open-loop response. The use of large
value feedback and gain resistors exacerbates the problem
by further lowering the pole frequency (increasing the
possibility of oscillation).
The EL5367 frequency response is optimized with the
resistor values in Figure 3. With the high bandwidth of this
amplifier, these resistor values might cause stability
problems when combined with parasitic capacitance, thus
ground plane is not recommended around the inverting input
pin of the amplifier.
Feedback Resistor Values
The EL5367 has been designed and specified at a gain of +2
with RF approximately 392. This value of feedback resistor
gives 800MHz of -3dB bandwidth at AV = 2 with about 0.5dB
of peaking. Since the EL5367 is current-feedback amplifier, it
is also possible to change the value of RF to get more
bandwidth. As seen in the curve of Frequency Response for
Various RF and RG, bandwidth and peaking can be easily
modified by varying the value of the feedback resistor.
Because the EL5367 is a current-feedback amplifier, its
gain-bandwidth product is not a constant for different closed-
loop gains. This feature actually allows the EL5367 to
maintain reasonable constant -3dB bandwidth for different
gains. As gain is increased, bandwidth decreases slightly
while stability increases. Since the loop stability is improving
with higher closed-loop gains, it becomes possible to reduce
the value of RF below the specified 250 and still retain
stability, resulting in only a slight loss of bandwidth with
increased closed-loop gain.
Pin Descriptions
16-PIN QSOP
PIN NAME
FUNCTION
3
INPA
Non-inverting input
6
INPB
Non-inverting input
8
INPC
Non-inverting input
1
INMA
Inverting
14
INMB
Inverting
11
INMC
Inverting
2
VSMA
Negative supply
4
VSMB
Negative supply
7
VSMC
Negative supply
16
VSPA
Positive supply
13
VSPB
Positive supply
10
VSPC
Positive supply
15
OUTA
Output
12
OUTB
Output
9
OUTC
Output
EL5367
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相關(guān)代理商/技術(shù)參數(shù) |
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| EL5367IUZ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| EL5370 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:100MHz Differential Twisted-Pair Drivers |
| EL5370IU | 功能描述:差分放大器 100 MHz Triple Diff RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補(bǔ)償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
| EL5370IU-T13 | 功能描述:IC DRVR TRPL 100MHZ DIFF 24-QSOP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:LinCMOS™ 放大器類(lèi)型:通用 電路數(shù):4 輸出類(lèi)型:- 轉(zhuǎn)換速率:0.05 V/µs 增益帶寬積:110kHz -3db帶寬:- 電流 - 輸入偏壓:0.7pA 電壓 - 輸入偏移:210µV 電流 - 電源:57µA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):3 V ~ 16 V，±1.5 V ~ 8 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:管件 產(chǎn)品目錄頁(yè)面:865 (CN2011-ZH PDF) 其它名稱(chēng):296-1834296-1834-5 |
| EL5370IU-T7 | 功能描述:IC AMP TRPL DIFF 100MHZ 24-QSOP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類(lèi)型:電壓反饋 電路數(shù):4 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR) |
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