AD625SD

更新时间： 2024-02-02 06:49:18

品牌	Logo	应用领域
亚德诺 - ADI		仪表放大器放大器电路
页数	文件大小	规格书
15页	464K
描述
Programmable Gain Instrumentation Amplifier

阅读下载

中文翻译

获取价格

技术参数
数据手册
替代型号

如果您发现信息不准确，欢迎纠错

AD625SD 技术参数

Source Url Status Check Date：	2013-05-01 14:56:15.434	是否无铅：	含铅
是否Rohs认证：	不符合	生命周期：	Not Recommended
零件包装代码：	DIP	包装说明：	DIP-16
针数：	16	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.31.00.01
风险等级：	5.05	Is Samacsys：	N
放大器类型：	INSTRUMENTATION AMPLIFIER	最大平均偏置电流 (IIB)：	0.05 µA
标称带宽 (3dB)：	0.65 MHz	最小共模抑制比：	70 dB
最大输入失调电流 (IIO)：	0.035 µA	最大输入失调电压：	200 µV
JESD-30 代码：	R-CDIP-T16	JESD-609代码：	e0
长度：	20.32 mm	负供电电压上限：	-18 V
标称负供电电压 (Vsup)：	-15 V	最大非线性：	0.01%
功能数量：	1	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	CERAMIC, METAL-SEALED COFIRED	封装代码：	DIP
封装等效代码：	DIP16,.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
座面最大高度：	3.553 mm	标称压摆率：	5 V/us
子类别：	Instrumentation Amplifier	最大压摆率：	5 mA
供电电压上限：	18 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 (Sn63Pb37)
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
最大电压增益：	10000	最小电压增益：	1
标称电压增益：	10	宽度：	7.62 mm
Base Number Matches：	1

AD625SD 数据手册

AD625

1000

3) Begin all calculations with G₀= 1 and R_F₀= 0.

R_F₁= (20 kΩ – R_F₀) (1–1/4): R_F₀= 0 ∴ R_F₁= 15 kΩ

R_F₂= [20 kΩ – (R_F₀+ R_F₁)] (1–4/16):

800

400

200

= 1kꢀ

R_F₀+ R_F₁= 15 kΩ ∴ R_F₂= 3.75 kΩ

100

= 500ꢀ

R_F₃= [20 kΩ – (R_F₀+ R_F₁+ R_F₂)] (1–16/64):

R_F₀+ R_F₁+ R_F₂= 18.75 kΩ ∴ R_F₃= 937.5 Ω

= 200ꢀ

4) The center resistor (R_Gof the highest gain setting), is deter-

mined last. Its value is the remaining resistance of the 40 kΩ

string, and can be calculated with the equation:

= 0ꢀ

R_G= (40 kΩ – 2 R_F

)

∑

GAIN

256

1024

4096

j = 0

R_G= 40 kΩ – 2 (R_F+ R_F+ R_FR_F)

40 kΩ – 39.375 kΩ = 625 Ω

Figure 40. Time to 0.01% of a 20 V Step Input for

SPGA with AD625

5) If different resistor values are desired, all the resistors in the

network can be scaled by some convenient factor. However,

raising the impedance will increase the RTO errors, lowering

the total network resistance below 20 kΩ can result in ampli-

fier instability. More information on this phenomenon is

given in the RPGA section of the data sheet. The scale factor

will not affect the unity gain feedback resistors. The resistor

network in Figure 38 has a scaling factor of 650/625 = 1.04,

if this factor is used on R_F1, R_F₂, R_F₃, and R_G, then the resis-

tor values will match exactly.

DETERMINING SPGA RESISTOR NETWORK VALUES

The individual resistors in the gain network can be calculated

sequentially using the formula given below. The equation deter-

mines the resistors as labeled in Figure 41. The feedback resis-

tors and the gain setting resistors are interactive, therefore; the

formula must be a series where the present term is dependent on

the preceding term(s). The formula

G_i

G₀= 1

R_F

= (20 kΩ –

R_Fj) (1 –

)

∑

i +1

6) Round off errors can be cumulative, therefore, it is advised to

carry as many significant digits as possible until all the values

have been calculated.

R_F= 0

G_{i =1}

j = 0

can be used to calculate the necessary feedback resistors for any

set of gains. This formula yields a network with a total resistance

of 40 kΩ. A dummy variable (j) serves as a counter to keep a

running total of the preceding feedback resistors. To illustrate

how the formula can be applied, an example similar to the

calculation used for the resistor network in Figure 38 is exam-

ined below.

AD75xx

TO GAIN SENSE

(PIN 2)

TO GAIN SENSE

(PIN 15)

20kꢀ

1) Unity gain is treated as a separate case. It is implemented

with separate 20 kΩ feedback resistors as shown in Figure 41.

It is then ignored in further calculations.

CONNECT IF UNITY

GAIN IS DESIRED

CONNECT IF UNITY

GAIN IS DESIRED

TO GAIN DRIVE

(PIN 5)

TO GAIN DRIVE

(PIN 12)

2) Before making any calculations it is advised to draw a resistor

network similar to the network in Figure 41. The network

will have (2 × M) + 1 resistors, where M = number of gains.

For Figure 38 M = 3 (4, 16, 64), therefore, the resistor string

will have seven resistors (plus the two 20 kΩ “side” resistors

for unity gain).

Figure 41. Resistors for a Gain Setting Network

–14–

REV. D

1...11 12 131415

中文翻译

下载PDF

AD625SD 替代型号

型号	品牌	替代类型	描述	数据表
AD625BD/+	ADI	完全替代	IC INSTRUMENTATION AMPLIFIER, 50 uV OFFSET-MAX, 0.65 MHz BAND WIDTH, CDIP16, CERAMIC, DIP-
AD625ADZ	ADI	类似代替	Programmable Gain Instrumentation Amplifier
AD625CDZ	ADI	类似代替	Programmable Gain Instrumentation Amplifier

与AD625SD相关器件

型号	品牌	获取价格	描述	数据表
AD625SD/883B	ADI	获取价格	Programmable Gain Instrumentation Amplifier
AD625SD/883B	ROCHESTER	获取价格	INSTRUMENTATION AMPLIFIER, 200 uV OFFSET-MAX, 0.65 MHz BAND WIDTH, CDIP16, CERAMIC, DIP-16
AD625SD883B	ETC	获取价格	MICROCIRCUIT, LINEAR, PROGRAMMABLE GAIN MICROCIRCUIT, LINEAR, PROGRAMMABLE GAIN MONOLITHIC
AD625SE	ADI	获取价格	Programmable Gain Instrumentation Amplifier
AD625SE/883B	ROCHESTER	获取价格	INSTRUMENTATION AMPLIFIER, 200 uV OFFSET-MAX, 0.65 MHz BAND WIDTH, PQCC20, LCC-20
AD625SE/883B	ADI	获取价格	Programmable Gain Instrumentation Amplifier
AD625SE883B	ETC	获取价格	MICROCIRCUIT, LINEAR, PROGRAMMABLE GAIN MICROCIRCUIT, LINEAR, PROGRAMMABLE GAIN MONOLITHIC
AD626	ADI	获取价格	Low Cost, Single Supply Differential Amplifier
AD626_03	ADI	获取价格	Low Cost, Single-Supply Differential Amplifi er
AD626A	ADI	获取价格	Low Cost, Single Supply Differential Amplifier

与AD625SD相关文章

LM317T数据手册解读：产品特性、应用、封装与引脚详解
2024-06-14

11
一文带你了解?DB3二极管好坏判断、参数信息、替代推荐
2024-06-14

14
LM358DR数据手册：引脚说明、电气参数及替换型号推荐
2024-06-14

8
OP07CP数据手册解读：引脚信息、电子参数
2024-06-14

8

产品中心

服务支持

精选活动

关于我们

帮助中心

AD625SD

AD625SD 技术参数

AD625SD 数据手册

AD625SD 替代型号

与AD625SD相关器件

与AD625SD相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD625SD

AD625SD 技术参数

AD625SD 数据手册

AD625SD 替代型号

与AD625SD相关器件

与AD625SD相关文章

您还可以找

您在本页遇到什么问题？