Datasheet > EL2071

EL2071

更新时间： 2024-02-18 17:59:53

品牌	Logo	应用领域
英特矽尔 - INTERSIL		放大器
页数	文件大小	规格书
11页	405K
描述
150MHz Current Feedback Amplifier

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技术参数
数据手册

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EL2071 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP8,.25
针数：	8	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.92	放大器类型：	OPERATIONAL AMPLIFIER
架构：	CURRENT-FEEDBACK	25C 时的最大偏置电流 (IIB)：	30 µA
标称共模抑制比：	50 dB	频率补偿：	YES (AVCL>=7)
最大输入失调电压：	10000 µV	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	长度：	4.9 mm
低-失调：	NO	负供电电压上限：	-7 V
标称负供电电压 (Vsup)：	-5 V	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	+-5 V
认证状态：	Not Qualified	座面最大高度：	1.75 mm
最小摆率：	700 V/us	标称压摆率：	1200 V/us
子类别：	Operational Amplifier	最大压摆率：	21 mA
供电电压上限：	7 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽带：	YES	宽度：	3.9 mm

EL2071 数据手册

EL2071, EL2171

the EL2071 is connected in a gain of +7 configuration and is

disabled while the analog bus is driven externally to +5V.

Capacitive Feedback

The EL2071/EL2171 rely on their feedback resistor for

proper compensation. A reduction of the impedance of the

feedback element results in less stability, eventually resulting

in oscillation. Therefore, circuit implementations which have

capacitive feedback should not be used because of the

capacitor's impedance reduction with frequency. Similarly,

oscillations can occur when using the technique of placing a

capacitor in parallel with the feedback resistor to

compensate for shunt capacitances from the inverting input

to ground.

Pin 2 is consequently at +0.71V, and if V is driven to -5V,

then 5.71V appears between pins 3 and 2. Internally, this

voltage appears across a forward biased V in series with

a reverse biased V and is past the threshold for zenering

the reverse biased V . In a typical application, a 50Ω or

75Ω terminating resistor from pin 3 to ground will prevent

pin 3 from approaching -5V.

Printed Circuit Layout

As with any high frequency device, good PCB layout is

necessary for optimum performance. Ground plane

construction is a requirement, as is good power-supply

bypassing close to the package. The inverting input is

sensitive to stray capacitance, therefore connections at the

inverting input should be minimal, close to the package, and

constructed with as little coupling to the ground plane as

possible.

Using the EL2071 as a Multiplexer

An interesting use of the enable feature is to combine

several amplifiers in parallel with their outputs in common.

This combination then acts similar to a MUX in front of an

amplifier. A typical circuit is shown. The series resistance at

each output helps to further increase isolation between

amplifiers.

Capacitance at the output node will reduce stability,

eventually resulting in peaking, and finally oscillation if the

capacitance is large enough. The design of the

EL2071/EL2171 allow a larger capacitive load than

comparable products, yet there are occasions when a series

resistor before the capacitance may be needed. Please refer

to the graphs to determine the proper resistor value needed.

When the EL2071 is disabled, the DC output impedance is

> 100kΩ in parallel with 2pF capacitance.

To operate properly, the decoder that is used must have a

> (V +) - 0.4V with I

= 750µA, and should be

Disable/Enable Operation for EL2071

connected to the same power supply as the EL2071.

The EL2071 has a disable/enable control input at pin 8. The

device is enabled and operates normally when pin 8 is left

open or returned to ground. When the voltage at pin 8 is

brought to within 0.4V of pin 7 (V +), the EL2071 is disabled.

The output becomes a high impedance, the inverting input is

no longer driven to the positive input voltage, and the supply

current is reduced to less than 2.2.mA. There are internal

resistors which limit the current at pin 8 to a safe level

(~ ±500µA) if pin 8 is shorted to either supply.

Typically, analog and digital circuits should have separate

power supplies. This usually leads to slight differences

between the power supply voltages. The EL2071's disable

feature is dependent on the voltage at pins 8 and 7.

Therefore, to operate the disable feature of the EL2071

dependably over temperature, it is recommended that the

logic circuitry which drives pin 8 of the EL2071 operate from

the same +5V supply as the EL2071 to avoid voltage

differences between the digital and analog power supplies.

Since V

is temperature dependent, it is recommended

DIS

that 5V CMOS logic (with a V

> 4.6V sourcing > 750µA

over temperature) be used to drive the disable pin of the

EL2071.

When disabled, (as well as in enabled mode), care must be

taken to prevent a differential voltage between the + and -

inputs greater than 5.0V. For example, in the figure below,

1...6 7 8910 11

中文翻译

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与EL2071相关器件

型号	品牌	获取价格	描述	数据表
EL2071CN	INTERSIL	获取价格	150MHz Current Feedback Amplifier
EL2071CS	INTERSIL	获取价格	150MHz Current Feedback Amplifier
EL2071J/883B	ETC	获取价格	Current-Feedback Operational Amplifier
EL2072	INTERSIL	获取价格	730MHz Closed Loop Buffer
EL2072C	ELANTEC	获取价格	730 MHz Closed Loop Buffer
EL2072CN	ELANTEC	获取价格	730 MHz Closed Loop Buffer
EL2072CN	INTERSIL	获取价格	730MHz Closed Loop Buffer
EL2072CS	ELANTEC	获取价格	730 MHz Closed Loop Buffer
EL2072CS	INTERSIL	获取价格	730MHz Closed Loop Buffer
EL2072CS-T13	ELANTEC	获取价格	Buffer Amplifier, 1 Func, BIPolar, PDSO8, SO-8

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