AD825ARZ-16-REEL7

更新时间： 2024-10-28 03:19:27

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
12页	450K
描述
Low Cost, General-Purpose High Speed JFET Amplifier

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

AD825ARZ-16-REEL7 数据手册

浏览型号AD825ARZ-16-REEL7的Datasheet PDF文件第6页

浏览型号AD825ARZ-16-REEL7的Datasheet PDF文件第7页

浏览型号AD825ARZ-16-REEL7的Datasheet PDF文件第8页

浏览型号AD825ARZ-16-REEL7的Datasheet PDF文件第9页

AD825

DRIVING CAPACITIVE LOADS

VPOS

The internal compensation of the AD825, together with its high

output current drive, permits excellent large signal performance

while driving extremely high capacitive loads.

NEG

POS

1kΩ

10µF

0.01µF

VOUT

HP PULSE

GENERATOR

TEKTRONIX

P6204 FET

PROBE

TEKTRONIX

7A24

PREAMP

1kΩ

AD825

OUT

0.01µF

10µF

50Ω

–V

VNEG

Figure 30. Inverting Amplifier Driving a Capacitive Load

Figure 32. Simplified Schematic

500ns

The capacitor, C_F, in the output stage, enables the AD825 to

drive heavy capacitive loads. For light loads, the gain of the

output buffer is close to unity, C_Fis bootstrapped, and not much

happens. As the capacitive load is increased, the gain of the

output buffer is decreased and the bandwidth of the amplifier is

reduced through a portion of C_Fadding to the dominant pole.

As the capacitive load is further increased, the amplifier’s

bandwidth continues to drop, maintaining the stability of the

AD825.

INPUT

OUTPUT

INPUT CONSIDERATION

The AD825 with its unique input stage ensures no phase

reversal for signals as large as or even larger than the supply

voltages. Also, layout considerations of the input transistors

ensure functionality even with a large differential signal.

Figure 31. Inverting Amplifier Pulse Response

While Driving a 400 pF Capacitive Load

THEORY OF OPERATION

The AD825 is a low cost, wideband, high performance FET

input operational amplifier. With its unique input stage design,

the AD825 ensures no phase reversal, even for inputs that

exceed the power supply voltages, and its output stage is

designed to drive heavy capacitive or resistive loads with small

changes relative to no load conditions.

The need for a low noise input stage calls for a larger FET

transistor. One should consider the additional capacitance that

is added to ensure stability. When filters are designed with the

AD825, one needs to consider the input capacitance (5 pF to

6 pF) of the AD825 as part of the passive network.

GROUNDING AND BYPASSING

The AD825 (Figure 32) consists of common-drain, common-

base FET input stage driving a cascoded, common-base

matched NPN gain stage. The output buffer stage uses emitter

followers in a Class AB amplifier that can deliver large current

to the load while maintaining low levels of distortion.

The AD825 is a low input bias current FET amplifier. Its high

frequency response makes it useful in applications, such as

photodiode interfaces, filters, and audio circuits. When

designing high frequency circuits, some special precautions are

in order. Circuits must be built with short interconnects, and

resistances should have low inductive paths to ground. Power

supply leads should be bypassed to common as close as possible

to the amplifier pins. Ceramic capacitors of 0.1 µF are

recommended.

Rev. F | Page 10 of 12

1...7 8 91011 12

中文翻译

下载PDF

AD825ARZ-16-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD825AR-16-REEL	ADI	完全替代	Low Cost, General-Purpose High Speed JFET Amplifier
AD825AR-16	ADI	完全替代	Low Cost, General-Purpose High Speed JFET Amplifier
AD825ARZ-16	ADI	类似代替	Low Cost, General-Purpose High Speed JFET Amplifier

与AD825ARZ-16-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD825ARZ-16-REEL71	ADI	获取价格	Low Cost, General-Purpose High Speed JFET Amplifier
AD825ARZ-REEL	ADI	获取价格	Low Cost, General-Purpose High Speed JFET Amplifier
AD826	ADI	获取价格	High-Speed, Low-Power Dual Operational Amplifier
AD8260	ADI	获取价格	High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
AD8260ACPZ-R7	ADI	获取价格	High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
AD8260ACPZ-RL	ADI	获取价格	High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
AD8260ACPZ-WP	ADI	获取价格	High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
AD8260-EVALZ	ADI	获取价格	High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
AD8264	ADI	获取价格	Quad, 235 MHz, DC-Coupled VGA and Differential Output Amplifier
AD8264ACPZ	ADI	获取价格	Quad, 235 MHz, DC-Coupled VGA and Differential Output Amplifier

与AD825ARZ-16-REEL7相关文章

三星深化印度制造布局，供应链本地化进程加速
2024-10-29

12
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

11
纳微科技震撼发布GaNSlim革新氮化镓功率芯片
2024-10-18

39
意法半导体发布第四代SiC技术，助力电动汽车电驱
2024-10-15

46

产品中心

服务支持

精选活动

关于我们

帮助中心

AD825ARZ-16-REEL7

AD825ARZ-16-REEL7 数据手册

AD825ARZ-16-REEL7 替代型号

与AD825ARZ-16-REEL7相关器件

与AD825ARZ-16-REEL7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

AD825ARZ-16-REEL7

AD825ARZ-16-REEL7 数据手册

AD825ARZ-16-REEL7 替代型号

与AD825ARZ-16-REEL7相关器件

与AD825ARZ-16-REEL7相关文章

您还可以找

您在本页遇到什么问题？