AD5539S

更新时间： 2024-10-28 04:04:07

品牌	Logo	应用领域
亚德诺 - ADI		运算放大器
页数	文件大小	规格书
16页	475K
描述
Ultrahigh Frequency Operational Amplifier

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AD5539S 数据手册

AD5539

Figures 21 and 22 show the small and large signal pulse re-

sponses of the general purpose inverter circuit of Figure 17, with

C_LEAD= 1.5 pF, R_LAG= 330 Ω and C_LAG= 3.5 pF.

Figure 21. Sm all Signal Pulse Response of the (Figure 17)

Inverter Circuit; Vertical Scale: 50 m V/div; Horizontal

Scale: 5 ns/div

Figure 23. A Gain of 2 Inverter Circuit with the C_LEAD

Capacitor Connected to Pin 12

Figure 22. Large Signal Response of the (Figure 17)

Inverter Circuit; Vertical Scale: 200 m V/div, Horizontal

Scale: 5 ns/div

A C_LEADcapacitor may be used to limit the circuit bandwidth

and to achieve a single pole response free of overshoot

Figure 24. Response of the Circuit of Figure 23 with

C_LEAD= 10 pF

–3 dB frequency =

A Gener al P ur pose Voltage Follower Cir cuit

2 π R2 C_LEAD

Noninverting (voltage follower) circuits pose an additional com-

plication, in that when a lag network is used, the source imped-

ance will affect the noise gain. In addition, the slightly greater

bandwidth of the noninverting configuration makes any excess

phase shift due to the output stage more of a problem.

If this option is selected, it is recommended that a C_LEADbe

connected between Pin 12 and the summing junction, as shown

in Figure 23. Pin 12 provides a separately buffered version of

the output signal. Connecting the lead capacitor here avoids the

excess output-stage phase shift and subsequent oscillation prob-

lems (at approx. 350 MHz) which would otherwise occur when

using the circuit of Figure 17 with a C_LEADof more than about

2 pF.

For example, a gain of 3 noninverting circuit with C_LEADcon-

nected normally (across the feedback resistor – Figure 25) will

require a source resistance of 200 Ω or greater to prevent UHF

oscillation; the extra source resistance provides some damping

as well as increasing the noise gain. T he frequency response plot

of Figure 26 shows that the highest –3 dB frequency of all the

applications circuits can be achieved using this connection, un-

fortunately, at the expense of a noise gain of 14.2.

Figure 24 shows the response of the circuit of Figure 23 for each

connection of C_LEAD. Lag components may also be added to this

circuit to further tailor its response, but, in this case, the results

will be slightly less satisfactory than connecting C_LEADdirectly

to the output, as was done in Figure 17.

REV. B

–9–

1...6 7 8910 11 12...16

中文翻译

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与AD5539S相关器件

型号	品牌	获取价格	描述	数据表
AD5539SCHIPS	ADI	获取价格	AD5539SCHIPS
AD5539SQ	ADI	获取价格	Ultrahigh Frequency Operational Amplifier
AD5539SQ/883B	ADI	获取价格	Ultrahigh Frequency Operational Amplifier
AD5541	ADI	获取价格	5 V, Serial-Input Voltage-Output, 16-Bit DACs
AD5541_12	ADI	获取价格	2.7 V to 5.5 V, Serial-Input, Voltage-Output, 16-Bit DACs
AD5541_15	ADI	获取价格	2.7 V to 5.5 V, Serial-Input, Voltage-Output, 16-Bit DACs
AD5541A	ADI	获取价格	2.7 V to 5.5 V, Serial-Input, Voltage-Output, 16-/12-Bit nanoDACs in LFCSP
AD5541AACPZ	ADI	获取价格	2.7 V to 5.5 V, Serial-Input, Voltage-Output, 16-/12-Bit nanoDACs in LFCSP
AD5541AACPZ-REEL7	ADI	获取价格	2.7 V to 5.5 V, Serial-Input, Voltage-Output,
AD5541AARMZ	ADI	获取价格	2.7 V to 5.5 V, Serial-Input, Voltage-Output, 16-/12-Bit nanoDACs in LFCSP

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