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參數(shù)資料
| 型號： | MAX495 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Output RS-485 Transceiver 8-SOIC -40 to 85 |
| 中文描述： | 單/雙/四路、微功耗、單電源、滿擺幅運(yùn)算放大器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 230K |
| 代理商： | MAX495 |
M
S ingle/Dual/Quad, Mic ropower,
S ingle-S upply Rail-to-Rail Op Amps
12
______________________________________________________________________________________
in series with IN-, IN+, or both. Series resistors are not
recommended for amplifier applications, as they may
increase input offsets and decrease amplifier bandwidth.
Output Loading and S tability
Even with their low quiescent current of less than 150μA
per op amp, the MAX492/MAX494/MAX495 are well
suited for driving loads up to 1k
while maintaining DC
accuracy. Stability while driving heavy capacitive loads
is another key advantage over comparable CMOS rail-
to-rail op amps.
In op amp circuits, driving large capacitive loads
increases the likelihood of oscillation. This is especially
true for circuits with high loop gains, such as a unity-
gain voltage follower. The output impedance and a
capacitive load form an RC network that adds a pole to
the loop response and induces phase lag. If the pole
frequency is low enough—as when driving a large
capacitive load—the circuit phase margin is degraded,
leading to either an under-damped pulse response or
oscillation.
10
μ
s/div
V
IN
50mV/div
V
OUT
50mV/div
10
μ
s/div
V
IN
50mV/div
V
OUT
50mV/div
10
μ
s/div
V
IN
50mV/div
V
OUT
50mV/div
Figure 7c. MAX492 Voltage Follower with 500pF Load—
R
L
=
∞
Figure 7a. MAX492 Voltage Follower with 500pF Load—
R
L
= 5k
Figure 7b. MAX492 Voltage Follower with 500pF Load—
R
L
= 20k
V
IN
50mV/div
V
OUT
50mV/div
10
μ
s/div
Figure 6. MAX492 Voltage Follower with 1000pF Load
(R
L
=
∞
)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX495CPA | High-Output RS-485 Transceiver 8-PDIP -40 to 85 |
| MAX495CSA | High-Output RS-485 Transceiver 8-PDIP -40 to 85 |
| MAX495EPA | High-Output RS-485 Transceiver 8-SOIC -40 to 85 |
| MAX495ESA | High-Output RS-485 Transceiver 8-SOIC -40 to 85 |
| MAX495MJA | High-Output RS-485 Transceiver 8-SOIC -40 to 85 |
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