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參數(shù)資料
| 型號： | AD713KNZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | Quad Precision, Low Cost, High Speed, BiFET Op Amp |
| 中文描述： | QUAD OP-AMP, 700 uV OFFSET-MAX, 4 MHz BAND WIDTH, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大小： | 459K |
| 代理商： | AD713KNZ |
REV. C
AD713
–8–
A HIGH SPEED INSTRUMENTATION AMPLIFIER
CIRCUIT
The instrumentation amplifier circuit shown in Figure 5 can
provide a range of gains from unity up to 1000 and higher using
only a single AD713. The circuit bandwidth is 1.2 MHz at a
gain of 1 and 250 kHz at a gain of 10; settling time for the entire
circuit is less than 5
s to within 0.01% for a 10 V step, (G = 10).
Other uses for amplifier A4 include an active data guard and an
active sense input.
Figure 5. A High Speed Instrumentation Amplifier Circuit
Table I provides a performance summary for this circuit. The
photo of Figure 6 shows the pulse response of this circuit for a
gain of 10.
Table I. Performance Summary for the High Speed
Instrumentation Amplifier Circuit
Gain
RG
Bandwidth
T Settle (0.01%)
1
NC
1.2 MHz
2
s
2
20 k
1.0 MHz
2
s
10
4.04 k
0.25 MHz
5
s
Figure 6. The Pulse Response of the High Speed
Instrumentation Amplifier. Gain = 10
A HIGH SPEED FOUR OP AMP CASCADED AMPLIFIER
CIRCUIT
Figure 7 shows how the four amplifiers of the AD713 may be
connected in cascade to form a high gain, high bandwidth am-
plifier. This gain of 100 amplifier has a –3 dB bandwidth greater
than 600 kHz.
Figure 7. A High Speed Four Op Amp Cascaded
Amplifier Circuit
Figure 8. THD Test Circuit
HIGH SPEED OP AMP APPLICATIONS AND
TECHNIQUES
DAC Buffers (I-to-V Converters)
The wide input dynamic range of JFET amplifiers makes them
ideal for use in both waveform reconstruction and digital-audio
DAC applications. The AD713, in conjunction with the AD1860
DAC, can achieve 0.0016% THD (here at a 4fs or a 176.4 kHz
update rate) without requiring the use of a deglitcher. Just such
a circuit is shown in Figure 9. The 470 pF feedback capacitor
used with IC2a, along with op amp IC2b and its associated
components, together form a 3-pole low-pass filter. Each or all
of these poles can be tailored for the desired attenuation and
phase characteristics required for a particular application. In this
application, one half of an AD713 serves each channel in a two-
channel stereo system.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD713SCHIPS | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Precision, Low Cost, High Speed, BiFET Op Amp |
| AD713SQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Precision, Low Cost, High Speed, BiFET Op Amp |
| AD713SQ/883B | 制造商:Rochester Electronics LLC 功能描述:HIGH SPEED QUAD BIFET AMP - Bulk |
| AD713TQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Precision, Low Cost, High Speed, BiFET Op Amp |
| AD713TQ/883B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Precision, Low Cost, High Speed, BiFET Op Amp |
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