Datasheet > AD8132ARMZ-REEL71

AD8132ARMZ-REEL71

更新时间： 2022-05-24 14:58:59

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
32页	621K
描述
Low Cost, High Speed Differential Amplifier

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

AD8132ARMZ-REEL71 数据手册

浏览型号AD8132ARMZ-REEL71的Datasheet PDF文件第26页

浏览型号AD8132ARMZ-REEL71的Datasheet PDF文件第27页

浏览型号AD8132ARMZ-REEL71的Datasheet PDF文件第28页

浏览型号AD8132ARMZ-REEL71的Datasheet PDF文件第30页

AD8132

FULL-WAVE RECTIFIER

If there is not enough forward bias (V_{OUT, cm}too low), the lower

sharp cusps of the full-wave rectified output waveform are rounded

off. In addition, as the frequency increases, there tends to be some

rounding of the lower cusps. The forward bias can be increased

to yield sharper cusps at higher frequencies.

The balanced outputs of the AD8132, along with a couple of

Schottky diodes, can create a very high speed, full-wave rectifier.

Such circuits are useful for measuring ac voltages and other

computational tasks.

There is not a reliable, entirely quantifiable, means to measure

the performance of a full-wave rectifier. Because the ideal

waveform has periodic sharp discontinuities, it has (mostly

even) harmonics that have no upper bound on the frequency.

However, for a practical circuit, as the frequency increases, the

higher harmonics become attenuated and the sharp cusps that

are present at low frequencies become significantly rounded.

Figure 82 shows the configuration of such a circuit. Each of the

AD8132 outputs drives the anode of an HP2835 Schottky diode.

These Schottky diodes were chosen for their high speed operation.

At lower frequencies (approximately lower than 10 MHz), a silicon

signal diode, such as a 1N4148, can be used. The cathodes of the

two diodes are connected together, and this output node is

connected to ground by a 100 Ω resistor.

+5V

When running the circuit at a frequency up to 300 MHz, though it

stays functional, the major harmonic that remains in the output

is the second. This looks like a sine wave at 600 MHz. Figure 83 is

an oscilloscope plot of the output when driven by a 100 MHz,

2.5 V p-p input.

348Ω

49.9Ω

24.9Ω

348Ω

HP2835

Sometimes a second harmonic generator is useful for creating a

clock to oversample a DAC by a factor of two. If the output of

this circuit is run through a low-pass filter, it can be used as a

second harmonic generator.

OUT

100Ω

348Ω

+5V

10kΩ

–5V

CR1

Figure 82. Full-Wave Rectifier

Operate the diodes such that they are slightly forward-biased

when the differential output voltage is zero. For the Schottky

diodes, this is approximately 400 mV. The forward biasing is

conveniently adjusted by CR1, which, in this circuit, raises and

lowers V_{OUT, cm}without creating a differential output voltage.

One advantage of this circuit is that the feedback loop is never

momentarily opened while the diodes reverse their polarity within

the loop. This scheme is sometimes used for full-wave rectifiers

that use conventional op amps. These conventional circuits do

not work well at frequencies above approximately 1 MHz.

100mV

2ns

Figure 83. Full-Wave Rectifier Response with 100 MHz Input

AUTOMOTIVE PRODUCTS

The AD8132W is qualified per the AEC-Q100 for use in

automotive applications. Custom variants of this product may

be available to meet stringent automotive performance and

quality requirements.

Rev. I | Page 29 of 32

1...26 27 282930 31 32

中文翻译

下载PDF

与AD8132ARMZ-REEL71相关器件

型号	品牌	获取价格	描述	数据表
AD8132AR-REEL	ADI	获取价格	Low-Cost, High-Speed Differential Amplifier
AD8132AR-REEL7	ADI	获取价格	Low-Cost, High-Speed Differential Amplifier
AD8132ARZ	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132ARZ1	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132ARZ-R7	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132ARZ-R71	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132ARZ-REEL7	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132ARZ-RL	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132ARZ-RL1	ADI	获取价格	Low Cost, High Speed Differential Amplifier
AD8132-EVAL	ADI	获取价格	Low-Cost, High-Speed Differential Amplifier

与AD8132ARMZ-REEL71相关文章

晶闸管阳极与阴极之间加电压时控制极的电流流动分析
2024-06-05

7
探究MOS管沟道夹断后载流子传输机制及其电路设计影响
2024-06-05

6
光敏电阻的工作原理、作用及检测方法
2024-06-05

4
ENC28J60以太网控制器全面解析：特性、应用、引脚说明
2024-06-05

2

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8132ARMZ-REEL71

AD8132ARMZ-REEL71 数据手册

与AD8132ARMZ-REEL71相关器件

与AD8132ARMZ-REEL71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

AD8132ARMZ-REEL71

AD8132ARMZ-REEL71 数据手册

与AD8132ARMZ-REEL71相关器件

与AD8132ARMZ-REEL71相关文章

您还可以找

您在本页遇到什么问题？