- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375233 > AD5539 (Analog Devices, Inc.) Ultrahigh Frequency Operational Amplifier(超高頻率運(yùn)算放大器) PDF資料下載
參數(shù)資料
| 型號(hào)： | AD5539 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Ultrahigh Frequency Operational Amplifier(超高頻率運(yùn)算放大器) |
| 中文描述： | 超高頻率運(yùn)算放大器（超高頻率運(yùn)算放大器） |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 499K |
| 代理商： | AD5539 |
AD5539
–9–
REV. B
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
and C
LAG
= 3.5 pF.
Figure 21. Small Signal Pulse Response of the (Figure 17)
Inverter Circuit; Vertical Scale: 50 mV/div; Horizontal
Scale: 5 ns/div
Figure 22. Large Signal Response of the (Figure 17)
Inverter Circuit; Vertical Scale: 200 mV/div, Horizontal
Scale: 5 ns/div
A C
LEAD
capacitor may be used to limit the circuit bandwidth
and to achieve a single pole response free of overshoot
±3
dB frequency
=
1
2
π
R
2
C
LEAD
If this option is selected, it is recommended that a C
LEAD
be
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
LEAD
of more than about
2 pF.
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
LEAD
directly
to the output, as was done in Figure 17.
Figure 23. A Gain of 2 Inverter Circuit with the C
LEAD
Capacitor Connected to Pin 12
Figure 24. Response of the Circuit of Figure 23 with
C
LEAD
= 10 pF
A General Purpose Voltage Follower Circuit
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.
For example, a gain of 3 noninverting circuit with C
LEAD
con-
nected normally (across the feedback resistor – Figure 25) will
require a source resistance of 200
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD5547 | Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
| AD5547BRU | Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
| AD5547BRU-REEL7 | Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
| AD5557 | Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
| AD5557CRU | Dual Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5539J | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultrahigh Frequency Operational Amplifier |
| AD5539JN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| AD5539JQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD5539S | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultrahigh Frequency Operational Amplifier |
| AD5539SQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultrahigh Frequency Operational Amplifier |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。