Datasheet > 信号电路 > 模拟计算功能> EL2082

EL2082

更新时间： 2024-01-18 05:01:09

品牌	Logo	应用领域
ELANTEC		/
页数	文件大小	规格书
16页	358K
描述
Current-Mode Multiplier

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技术参数
数据手册

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EL2082 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
Reach Compliance Code：	unknown	风险等级：	5.84
Is Samacsys：	N	模拟集成电路 - 其他类型：	ANALOG MULTIPLIER OR DIVIDER
标称带宽：	150 MHz	JESD-30 代码：	R-GDIP-T8
JESD-609代码：	e0	负电源电压最大值（Vsup）：	-15 V
负电源电压最小值（Vsup）：	-5 V	标称负供电电压 (Vsup)：	-15 V
功能数量：	1	端子数量：	8
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	CERAMIC, GLASS-SEALED	封装代码：	DIP
封装等效代码：	DIP8,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	+-15 V	认证状态：	Not Qualified
子类别：	Analog Computational Functions	最大供电电流 (Isup)：	16 mA
最大供电电压 (Vsup)：	15 V	最小供电电压 (Vsup)：	5 V
标称供电电压 (Vsup)：	15 V	表面贴装：	NO
技术：	BIPOLAR	温度等级：	MILITARY
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

EL2082 数据手册

EL2082C

Current-Mode Multiplier

Applications Information Ð Contd.

Current-feedback op-amps again solve the summing-junction capacitance problem in this connection.

The loop bandwidth here becomes a matter of transimpedance over frequency and its phase characteris-

tics. Unfortunately, this is generally poorly documented in amplifier data sheets. A rule of thumb is

that the transimpedance falls to the value of the recommended feedback resistor at a frequency of

phase margin of the op-amp is usually close to 90 degrees at this frequency.

/4 to F

/2, where F

3 dB

is the unity-gain closed-loop bandwidth of the amplifier. The

3 dB

In general, Rf is initially the recommended value for the particular amplifier and is then empirically

is set for the overall circuit gain re-

adjusted for amplifier stability at maximum V

, then R

GAIN

quired. Sometimes a very small Cf can be used to improve loop stability, but it often must be in series

with another resistor of value around Rf/2.

A virtue of placing the EL2082 in feedback is that the input-referred noise will drop as gain increases.

This is ideal for level controls that are used to set the output to a constant level for a variety of inputs

as well as AGC loops. Furthermore, the EL2082 has a relatively constant input signal amplitude for a

variety of input levels, and its distortion will be relatively constant and controllable by setting Rf. Note

that placing the EL2082 in the feedback path causes the circuit bandwidth to vary inversely with gain.

The next circuit shows use of the EL2082 in the feedback path of a non-inverting op-amp:

95X

Gain

EL2082 in feedback

non-inverting gain

2082–16

This example has the same virtues with regards to noise and distortion as the preceding circuit; and its

bandwidth shrinks with increasing gain as well. The typical 12 pF sum of EL2082 output capacitance in

parallel with stray capacitance necessitates the inclusion of Cf to prevent a feedback pole. Because of

this 12 pF capacitance at the op-amp -input, current-feedback op-amps will generally not be useable. As

before, the loop bandwidth and phase margin must accommodate the extra phase lag of the EL2082.

1...7 8 91011 12 13...16

中文翻译

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与EL2082相关器件

型号	品牌	获取价格	描述	数据表
EL2082C	ELANTEC	获取价格	Current-Mode Multiplier
EL2082CJ	ETC	获取价格	Analog Multiplier
EL2082CN	ELANTEC	获取价格	Current-Mode Multiplier
EL2082CN	INTERSIL	获取价格	Current Mode Multiplier
EL2082CS	ELANTEC	获取价格	Current-Mode Multiplier
EL2082CS	INTERSIL	获取价格	Current Mode Multiplier
EL2082CS	RENESAS	获取价格	ANALOG MULTIPLIER OR DIVIDER, 150MHz BAND WIDTH, PDSO8
EL2082J	ETC	获取价格	Analog Multiplier
EL2082J/883	ELANTEC	获取价格	Analog Multiplier Or Divider, 1 Func, 150MHz Band Width, BIPolar, CDIP8,
EL2082J/883B	ELANTEC	获取价格	Analog Multiplier Or Divider, 1 Func, 150MHz Band Width, CDIP8, CERAMIC, DIP-8

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