Datasheet > 放大器电路 > 运算放大器> ADA4857-1YRZ-R7

ADA4857-1YRZ-R7

更新时间： 2024-02-01 21:26:34

品牌	Logo	应用领域
亚德诺 - ADI		运算放大器放大器电路光电二极管
页数	文件大小	规格书
20页	588K
描述
Ultralow Distortion, Low Power, Low Noise, High Speed Op Amp

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技术参数
数据手册

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ADA4857-1YRZ-R7 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP,	针数：	8
Reach Compliance Code：	unknown	风险等级：	5.35
Is Samacsys：	N	放大器类型：	OPERATIONAL AMPLIFIER
最大平均偏置电流 (IIB)：	3.3 µA	标称共模抑制比：	86 dB
最大输入失调电压：	4.5 µV	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3	长度：	4.9 mm
湿度敏感等级：	1	负供电电压上限：	-5.5 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：	125 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
座面最大高度：	1.75 mm	标称压摆率：	2800 V/us
子类别：	Operational Amplifier	供电电压上限：	5.5 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
温度等级：	AUTOMOTIVE	端子面层：	MATTE TIN
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：	40
宽度：	3.9 mm	Base Number Matches：	1

ADA4857-1YRZ-R7 数据手册

ADA4857-1/ADA4857-2

ABSOLUTE MAXIMUM RATINGS

The power dissipated in the package (P_D) is the sum of the

quiescent power dissipation and the power dissipated in the

die due to the ADA4857 drive at the output. The quiescent

power is the voltage between the supply pins (V_S) times the

quiescent current (I_S).

Table 3.

Parameter

Rating

Supply Voltage

11 V

Power Dissipation

See Figure 4

−V_S+ 0.7 V to +V_S− 0.7 V

V_S

Common-Mode Input Voltage

Differential Input Voltage

Exposed Paddle Voltage

Storage Temperature Range

Operating Temperature Range

P_D= Quiescent Power + (Total Drive Power − Load Power)

−V_S

⎛

⎜

⎝

⎞

⎟

⎠

V_SV_OUT

V_OUT

R_L

P_D=

(

V_S× I_S

)

–

−65°C to +125°C

−40°C to +125°C

R_L

Lead Temperature (Soldering, 10 sec) 300°C

Junction Temperature 150°C

RMS output voltages should be considered. If R_Lis referenced to

−V_S, as in single-supply operation, the total drive power is V_S×

_OUT. If the rms signal levels are indeterminate, consider the

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

worst case, when V_OUT= V_S/4 for R_Lto midsupply.

(

V_S/4

R_L

)

P_D=

(

V_S× I_S+

)

In single-supply operation with R_Lreferenced to −V_S, worst case

is V_OUT= V_S/2.

Airflow increases heat dissipation, effectively reducing θ_JA.

In addition, more metal directly in contact with the package

leads and exposed paddle from metal traces, through holes,

ground, and power planes reduce θ_JA.

THERMAL RESISTANCE

θ_JAis specified for the worst-case conditions, that is, θ_JAis specified

for device soldered in circuit board for surface-mount packages.

Figure 4 shows the maximum safe power dissipation in the

package vs. the ambient temperature for the SOIC and LFCSP

packages on a JEDEC standard 4-layer board. θ_JA

values are approximations.

Table 4.

Package Type

θ_JA

θ_JC

34.8

Unit

°C/W

8-Lead SOIC

8-Lead LFCSP

16-Lead LFSCP

115

94.5

68.2

3.0

2.5

2.0

MAXIMUM POWER DISSIPATION

The maximum safe power dissipation for the ADA4857 is

limited by the associated rise in junction temperature (T_J) on

the die. At approximately 150°C, which is the glass transition

temperature, the properties of the plastic change. Even temporarily

exceeding this temperature limit may change the stresses that

the package exerts on the die, permanently shifting the parametric

performance of the ADA4857. Exceeding a junction temperature of

175°C for an extended period can result in changes in silicon

devices, potentially causing degradation or loss of functionality.

ADA4857-2 (LFCSP)

1.5

1.0

ADA4857-1 (LFCSP)

0.5

ADA4857-1 (SOIC)

–40 –30 –20 –10

10 20 30 40 50 60 70 80 90 100 110 120

AMBIENT TEMPERATURE (°C)

Figure 4. Maximum Power Dissipation vs. Temperature for a 4-Layer Board

ESD CAUTION

Rev. 0 | Page 6 of 20

1...3 4 567 8 9...20

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