AD8512A

更新时间： 2024-01-18 17:41:04

品牌	Logo	应用领域
亚德诺 - ADI		运算放大器
页数	文件大小	规格书
58页	6724K
描述
Operational Amplifiers Selection Guide

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AD8512A 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP, SOP8,.25	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.31.00.01	风险等级：	0.89
放大器类型：	OPERATIONAL AMPLIFIER	架构：	VOLTAGE-FEEDBACK
最大平均偏置电流 (IIB)：	0.01 µA	25C 时的最大偏置电流 (IIB)：	0.00008 µA
标称共模抑制比：	100 dB	频率补偿：	YES
最大输入失调电压：	800 µV	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3	长度：	4.9 mm
低-偏置：	YES	低-失调：	YES
微功率：	NO	湿度敏感等级：	1
负供电电压上限：	-18 V	标称负供电电压 (Vsup)：	-5 V
功能数量：	2	端子数量：	8
最高工作温度：	125 °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）：	260
功率：	NO	电源：	+-5/+-15 V
可编程功率：	NO	认证状态：	Not Qualified
座面最大高度：	1.75 mm	标称压摆率：	20 V/us
子类别：	Operational Amplifier	最大压摆率：	5 mA
供电电压上限：	18 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	JFET
温度等级：	AUTOMOTIVE	端子面层：	Matte Tin (Sn)
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：	30
标称均一增益带宽：	8000 kHz	宽带：	NO
宽度：	3.9 mm	Base Number Matches：	1

AD8512A 数据手册

Amplifier Design Technology

Clamp Amplifiers

Quad Core (H Bridge)

Clamp amplifiers allow the designer to specify a high (VCH) and low (VCL)

output clamp voltage so the output signal will clamp at the specified

levels. Analog Devices’ unique CLAMPIN^™input clamp architecture offers

significant improvement in clamp performance compared to traditional

output clamping devices, minimizing clamp error and distortion in the

clamp region.

Analog Devices has patented the quad core architecture, which supplies

current on-demand to charge and discharge the internal dominant pole

capacitor, while allowing the quiescent current to be small. This patented

architecture enables amplifiers to provide high slew rates with low

distortion at low supply currents.

Overvoltage Protection (OVP) Amplifiers

Common-Mode Linearized Amplifiers

An OVP amplifier is the most robust solution to protect the amplifier and

entire circuitry from outside the rail input voltages due to manufacturing

shorts, power supply timing, or human error. OVP is able to protect real

estate from various unexpected errors, which in turns save time and

money. OVP amplifiers require no external circuitry to provide protection.

Increasing the linear input range of the input stage optimizes operational

amplifier large signal distortion. This can be accomplished through the

use of architectures such as degenerated differential structures and

class AB input stages, both of which increase noise and lower precision.

An alternate method is to linearize using a common-mode structure

whose noise is rejected by the inherent differential nature of the input

stage while also maintaining such precision metrics as CMRR, PSRR, and

V_OS. Analog Devices has numerous new amplifiers that now feature this

new technology and has patented the common-mode linearized input

architecture.

Zero-Drift Amplifiers

Zero-drift amplifiers dynamically correct the offset voltage to achieve

nanovolt-level offsets and extremely low offset drifts due to time and

temperature. The 1/f noise, seen as a dc error, is also removed. Zero-drift

amplifiers provide many benefits to designers, as temperature drift and

1/f noise, always nuisances in the system, are otherwise very difficult to

eliminate. In addition, zero-drift amplifiers have higher open-loop gain,

power supply rejection, and common-mode rejection as compared to

standard amplifiers; and their overall output error is less than that

obtained by a standard precision amplifier in the same configuration.

Current Feedback Amplifiers

Current feedback amplifiers are primarily used in applications that require

very high speed operation, large slew rates, and low distortion. The

fundamental concept is based on the fact that, in bipolar transistor circuits,

currents can be switched faster than voltages, all other things being equal.

Unlike voltage feedback amplifiers (VFB), CFB amplifiers do not have

balanced inputs. Instead, the noninverting input is high impedance, and

the inverting input is low impedance. The open-loop gain of the CFB is

measured in units of V (transimpedance gain) rather than V/V as for VFB

amplifiers. Also, the value of the feedback resistor plays a direct role in the

CFB’s stability. Therefore, adhering to the recommended feedback resistor

suggested in the data sheet is highly recommended.

Zero Input Crossover Distortion (ZCO) Amplifiers

Traditional rail-to-rail input amplifiers have an input stage that comprises

two differential pairs, a p-type and an n-type. During the transition of the

input common-mode voltage from the lower to the higher supply voltage,

one of the differential pairs turns off and the other turns on. This transition

causes crossover distortion. Zero input crossover distortion (ZCO) amplifiers

solve this problem by integrating an on-chip charge pump. The charge

pump increases the internal supply voltage, thus providing more headroom

to the input stage. This allows the input stage to handle a wider range of

input voltages (rail to rail) without using a second differential pair. As a

result, crossover distortion is avoided.

Differential Amplifiers

Differential amplifiers allow the process of single-ended input to

complementary differential outputs or differential inputs to differential

outputs. These amplifiers feature two separate feedback loops to control

the differential and common-mode output voltages. Analog Devices’

differential amplifiers are configured with a V_OCMpin, which can be easily

adjusted for setting output common-mode voltage. This provides a

convenient solution when interfacing with analog-to-digital converters

(ADCs). ADI also offers a series of differential receiver products that

convert differential input signals to single-ended output.

www.analog.com/opamps

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与AD8512A相关器件

型号	品牌	描述	获取价格	数据表
AD8512AR	ADI	Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifi	获取价格
AD8512AR	ROCHESTER	DUAL OP-AMP, 1800 uV OFFSET-MAX, 8 MHz BAND WIDTH, PDSO8, MS-012AA, SOIC-8	获取价格
AD8512ARM-R2	ADI	Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifi	获取价格
AD8512ARM-REEL	ADI	Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifi	获取价格
AD8512ARMZ	ADI	Precision, Very Low Noise, Low Input Bias Current	获取价格
AD8512ARMZ	ROCHESTER	DUAL OP-AMP, 1800uV OFFSET-MAX, 8MHz BAND WIDTH, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8	获取价格

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