HA-5221 데이터 시트보기 (PDF) - Intersil
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HA-5221 Datasheet PDF : 11 Pages
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HA-5221
Saturation Recovery
When an op amp is over driven, output devices can saturate
and sometimes take a long time to recover. By clamping the
input, output saturation can be avoided. If output saturation
can not be avoided, the maximum recovery time when
overdriven into the positive rail is 10.6µs. When driven into
the negative rail the maximum recovery time is 3.8µs.
Input Protection
The HA-5221 has built in back-to-back protection diodes
which limit the maximum allowable differential input voltage
to approximately 5V. If the HA-5221 is used in circuits where
the maximum differential voltage may be exceeded, then
current limiting resistors must be used. The input current
should be limited to a maximum of 10mA.
Typical Performance Curves VS = ±15V, TA = 25oC
RLIMIT2
∆VIN
RLIMIT3
6
+
VOUT
PC Board Layout Guidelines
When designing with the HA-5221, good high frequency
(RF) techniques should be used when building a PC board.
Use of ground plane is recommended. Power supply
decoupling is very important. A 0.01µF to 0.1µF high quality
ceramic capacitor at each power supply pin with a 2.2µF to
10µF tantalum close by will provide excellent decoupling.
Chip capacitors produce the best results due to ease of
placement next to the op amp and basically no lead
inductance. If leaded capacitors are used, the leads should
be kept as short as possible to minimize lead inductance.
RL = 1K, CL = 50pF
120
100
80
GAIN
60
40
20
180
0
135
PHASE
90
45
0
1K
10K
100K
1M
10M
100M
FREQUENCY (Hz)
FIGURE 5. OPEN LOOP GAIN AND PHASE vs FREQUENCY
12
9 AV = +1, RL = 1K, CL = 50pF
6
3
GAIN
0
-3
-6
PHASE
10K
100K
1M
10M
FREQUENCY (Hz)
180
135
90
45
0
100M
FIGURE 6. CLOSED LOOP GAIN vs FREQUENCY
9
6 AV = -1, RL = 1K, CL = 50pF
3
GAIN
0
180
PHASE
135
90
45
0
10K
100K
1M
10M
100M
FREQUENCY (Hz)
FIGURE 7. CLOSED LOOP GAIN vs FREQUENCY
80
60 AV = -1000
40 AV = -100
20 AV = -10
0
AV = -10
AV = -1000
RL = 1K, CL = 50pF
AV = -100
180
135
90
45
0
10K
100K
1M
10M
100M
FREQUENCY (Hz)
FIGURE 8. VARIOUS CLOSED LOOP GAINS vs FREQUENCY
5
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