AD688SQ

更新时间： 2024-02-15 23:16:55

品牌	Logo	应用领域
亚德诺 - ADI		电源电路参考电压源输出元件
页数	文件大小	规格书
8页	408K
描述
High Precision +-10 V Reference

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技术参数
数据手册

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AD688SQ 技术参数

生命周期：	Active	零件包装代码：	DIP
包装说明：	DIP,	针数：	16
Reach Compliance Code：	unknown	风险等级：	5.76
Is Samacsys：	N	其他特性：	-10V OUTPUT ALSO AVAILABLE, -13.5V TO -18V SUPPLY IS ALSO REQUIRED
模拟集成电路 - 其他类型：	THREE TERMINAL VOLTAGE REFERENCE	JESD-30 代码：	R-GDIP-T16
长度：	19.05 mm	功能数量：	1
输出次数：	2	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-55 °C
最大输出电压：	10.005 V	最小输出电压：	9.995 V
标称输出电压：	10 V	封装主体材料：	CERAMIC, GLASS-SEALED
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	认证状态：	COMMERCIAL
座面最大高度：	5.08 mm	最大供电电压 (Vsup)：	18 V
最小供电电压 (Vsup)：	13.5 V	标称供电电压 (Vsup)：	15 V
表面贴装：	NO	最大电压温度系数：	6 ppm/ °C
温度等级：	MILITARY	端子面层：	NOT SPECIFIED
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	微调/可调输出：	NO
宽度：	7.62 mm	Base Number Matches：	1

AD688SQ 数据手册

AD688

Duplication of these results requires a combination of high

accuracy and stable temperature control in a test system.

Evaluation of the AD688 will produce curves similar to those in

Figure 7, but output readings may vary depending on the test

methods and equipment utilized.

current and wire resistance produce an error (V_ERROR= R × I_L)

at the load. The Kelvin connection of Figure 9b overcomes the

problem by including the wire resistance within the forcing loop

of the amplifier and sensing the load voltage. The amplifier

corrects for any errors in the load voltage. In the circuit shown,

the output of the amplifier would actually be at 10 volts + V

ERROR

KELVIN CONNECTIONS

and the voltage at the load would be the desired 10 volts.

Force and sense connections, also referred to as Kelvin connec-

tions, offer a convenient method of eliminating the effects of

voltage drops in circuit wires. As seen in Figure 9a, the load

The AD688 has three amplifiers which can be used to imple-

ment Kelvin connections. Amplifier A2 is dedicated to the

ground force-sense function while uncommitted amplifiers A3

and A4 are free for other force-sense chores.

In some applications, one amplifier may be unused. In such

cases, the unused amplifier should be connected as a unity-gain

follower (force and sense pins tied together) and the input

should be connected to ground.

An unused amplifier may be used for other circuit functions as

well. The curves on this page show the typical performance of

A3 and A4.

Figure 9. Advantage of Kelvin Connection

A3, A4 Open-Loop Frequency

Response

A3, A4 CMR vs. Frequency

A3, A4 PSR vs. Frequency

Unity-Gain Follower Pulse

Response {Small Signal)

Input Noise Voltage Spectral

Density

Unity-Gain Follower Pulse

Response (Large Signal)

DYNAMIC PERFORMANCE

The output buffer amplifiers (A3 and A4) are designed to pro-

vide the AD688 with static and dynamic load regulation

superior to less complete references.

Many A/D and D/A converters present transient current loads

to the reference, and poor reference response can degrade the

converter’s performance.

Figure 10 displays the characteristic of the AD688 output

amplifier driving a 0-to-10 mA load.

Figure 10a. Transient Load Test Circuit

–6–

REV. A

1...3 4 567 8

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与AD688SQ相关器件

型号	品牌	描述	获取价格	数据表
AD689JCHIPS	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, UUC7, 0.081 X 0.060 INCH, DIE-7, Voltag	获取价格
AD689JQ	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, CDIP8, CERDIP-8, Voltage Reference	获取价格
AD689KQ	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, CDIP8, CERDIP-8, Voltage Reference	获取价格
AD689LQ	ETC	Voltage Reference	获取价格
AD689SQ	ADI	IC 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 8.192 V, CDIP8, CERDIP-8, Voltage Reference	获取价格
AD689SQ/883B	ETC	Voltage Reference	获取价格

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