OPA623AP BURR-BROWN [Burr-Brown Corporation], OPA623AP Datasheet - Page 11

• Manufacturer Part Number: OPA623AP
• Description: Wide Bandwidth, Current-Feedback OPERATIONAL AMPLIFIER
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

reduce the internal thermal rise, resulting in cooler, more
reliable operation. At extreme temperatures and under full
load conditions a heat sink is necessary. The internal power
dissipation is given by the equation P
is the quiescent power dissipation and P
dissipation in the output stage due to the load). Although the
P
when a signal is applied. For high-speed op amps, a more
precise approach to determine power consumption is to
measure the average total quiescent current for several
typical load conditions. The power consumption of the
OPA623 is influenced by the kind of signal, the applied
signal frequency, the output voltage, load resistor, and the
repetition rate of the signal transitions. Figure 8 shows the
average supply current versus the frequency of an applied
sine wave for various output voltages. Figure 9 illustrates the
average supply current versus the repetition frequency of an
applied square wave signal.
FIGURE 5. Open-Loop Gain vs R
FIGURE 6. Optimum Frequency Response vs Closed-Loop
DQ
is very low (40mW at V
–10
–15
–20
–25
–30
–10
–20
–30
20
15
10
–5
50
40
30
20
10
5
0
0
100k
100k
Gain.
+10V/V
+2V/V
+1V/V
–1V/V
1M
1M
Frequency (Hz)
Frequency (Hz)
CC
27
150
10M
= 5V), care should be taken
10M
300
2
|| R
D
1
= P
.
100M
100M
DL
DQ
is the power
+ P
DL
, (P
1G
1G
DQ
11
FIGURE 7. Frequency Response vs C
FIGURE 8. Average Supply Current vs Frequency
FIGURE 9. Average Supply Current vs Frequency
100k
25
20
15
10
50
45
40
35
30
25
20
15
10
5
0
5
0
10k
G
300
270
240
120
10k
CL
R
5.0Vp-p
2.8Vp-p
1.4Vp-p
0.2Vp-p
1
= +2V/V, V
Sine Curve
R
G = +2V/V
C
L
L
300
270
240
120
= 100
= 2pF
(sinewave).
(squarewave).
R
2
FREQUENCY RESPONSE vs C
100k
1M
10pF
22pF
47pF
2pF
100k
C
IN
L
= 1.4Vp-p
3
2
R
Frequency (Hz)
1
DUT
Frequency (Hz)
Frequency (Hz)
R
1M
2
10M
6
1M
47pF
22pF
10pF
2pF
51
OPA623
C
L
10M
5.0Vp-p
50
LOAD
100M
LOAD
10M
.
100M
G = +2V/V
C
R
2.8Vp-p
L
L
= 2pF
= 100
1.4Vp-p
0.2Vp-p
1G
100M
1G
®