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AD8475ACPZ-RL

更新时间： 2024-02-13 22:00:09

品牌	Logo	应用领域
亚德诺 - ADI		运算放大器放大器电路
页数	文件大小	规格书
24页	554K
描述
Precision, Selectable Gain, Fully Differential Funnel Amplifier

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技术参数
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AD8475ACPZ-RL 技术参数

Source Url Status Check Date：	2013-05-01 14:56:26.504	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	TSSOP	包装说明：	TSSOP,
针数：	10	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.31.00.01
风险等级：	5.18	Is Samacsys：	N
放大器类型：	OPERATIONAL AMPLIFIER	标称共模抑制比：	86 dB
最大输入失调电压：	200 µV	JESD-30 代码：	S-PDSO-G10
JESD-609代码：	e3	长度：	3 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	10	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：	TSSOP	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.1 mm
标称压摆率：	50 V/us	子类别：	Operational Amplifier
供电电压上限：	11 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	3 mm
Base Number Matches：	1

AD8475ACPZ-RL 数据手册

AD8475

INPUT VOLTAGE RANGE

DRIVING THE AD8475

The AD8475 can measure input voltages that are larger than the

supply rails. The internal gain and feedback resistors form a

divider, which reduces the input voltage seen by the internal

input nodes of the amplifier. The largest voltage that can be

measured is constrained by the capability of the amplifier’s

internal summing nodes. This voltage is defined by the input

voltage and the ratio between the feedback and the gain resistors.

Figure 51 shows the voltage at the internal summing nodes of

the amplifier, defined by the input voltage and internal resistor

network. If V_Nis grounded, the expression shown in the figure

reduces to

Care should be taken to drive the AD8475 with a low

impedance source: for example, another amplifier. Source

resistance can unbalance the resistor ratios and, therefore,

significantly degrade the gain accuracy and common-mode

rejection of the AD8475. For the best performance, source

impedance to the AD8475 input terminals should be kept

below 0.1 ꢁ. Refer to the DC Precision section for details on

the critical role of resistor ratios in the precision of the AD8475.

POWER SUPPLIES

The AD8475 operates over a wide range of supply voltages. It

can be powered on a single supply as low as 3 V and as high as

10 V. The AD8475 can also operate on dual supplies from

1.5 V up to 5 V

1 RF

2 RG

⎛

⎜

⎝

⎞

⎟

⎠

V_PLUS=V_MINUS

VOCM +

V_P

RF + RG

The internal amplifier of the AD8475 has rail-to-rail inputs. To

obtain accurate measurements with minimal distortion, the

voltage at the internal inputs of the amplifier must stay below

+V_S− 1 V and above −V_S.

A stable dc voltage should be used to power the AD8475. Note

that noise on the supply pins can adversely affect performance.

For more information, see the PSRR performance curve in

Figure 13.

For example, with V_S= 5 V in a G = 0.4 configuration, the

AD8475 can measure an input as high as 12.5 V and maintain

its excellent distortion performance.

Place a bypass capacitor of 0.1 ꢀF between each supply pin and

ground, as close as possible to each supply pin. Use a tantalum

capacitor of 10 ꢀF between each supply and ground. It can be

farther away from the supply pins and, typically, it can be

shared by other precision integrated circuits.

The AD8475 provides overvoltage protection for excessive input

voltages beyond the supply rails. Integrated ESD protection diodes

at the inputs prevent damage to the AD8475 up to +V_S+ 10.5 V

and −V_S− 16 V.

VOCM +

− V

VOCM

RF + RG

Figure 51. Voltages at the Internal Op Amp Inputs of the AD8475

Rev. B | Page 18 of 24

1...15 16 171819 20 21...24

中文翻译

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与AD8475ACPZ-RL相关器件

型号	品牌	获取价格	描述	数据表
AD8475ACPZ-WP	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475ARMZ	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475ARMZ-R7	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475ARMZ-RL	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475BRMZ	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475BRMZ-R7	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475BRMZ-RL	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8475-EVALZ	ADI	获取价格	Precision, Selectable Gain, Fully Differential Funnel Amplifier
AD8476	ADI	获取价格	Low Power, Unity Gain, Fully
AD8476ACPZ-R7	ADI	获取价格	Low Power, Unity Gain, Fully

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