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參數(shù)資料
| 型號： | OPA660AU |
| 元件分類： | 跨導(dǎo)放大器 |
| 英文描述： | Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER AND BUFFER |
| 中文描述： | 寬帶運(yùn)算跨導(dǎo)放大器和緩沖 |
| 文件頁數(shù)： | 17/18頁 |
| 文件大?。?/td> | 358K |
| 代理商： | OPA660AU |
17
OPA660
FIGURE 24. Frequency Response Direct-Feedback Amplifier.
FIGURE 25. Direct-Feedback Amplifier Small-Signal Pulse
Response.
Gain = 3, t
R
– t
F
= 2ns, V
I
= 100mVp–p
0
5
10
15
20
Time (ns)
25
30
35
40
45
50
FIGURE 26. Direct-Feedback Amplifier Large-Signal Pulse
Response.
Gain = 3, V
I
= 2Vp-p, t
R
= t
F
= 2ns
V
O
(
0
5
10
15
20
25
30
35
40
45
50
Time (ns)
OTA
B
E
2
C
3
8
160
V
I
R
4P
75
R
4
51
R
3
R
IN
Network
Analyzer
5.6pF
C
4P
I
Q
= 20mA
56
180
V
O
50
R
2
R
1
FIGURE 27. Forward Amplifier.
V
O
f
–3dB
±
100mV
±
300mV
±
700mV
±
1.4V
±
2.5V
351MHz
374MHz
435MHz
460MHz
443MHz
SPICE MODELS
Computer simulation using SPICE models is often useful
when analyzing the performance of analog circuits and sys-
tems. This is particularly true for video and RF amplifier
circuits, where parasitic capacitance and inductance can have
a major effect on circuit performance. SPICE models are
available from Burr-Brown.
FIGURE 28. Frequency Response Forward Amplifier.
–3V
+3V
0V
0V
+150mV
–150mV
V
O
(
15
10
5
0
–5
–10
–15
–20
–25
–30
1M
10M
100M
1G
O
Frequency (Hz)
OPA660 DIRECT FEEDBACK
R
= 100
R
2
= 120
R
= 390
R
4
= 200
R
5
= 100
R
6
= 68
I
Q
= 20mA R
p
= 82
C
p
= 6.4pF
20
0.2Vp-p
5Vp-p
2.8Vp-p
1.4Vp-p
0.6Vp-p
100k
15
10
5
0
–5
–10
–15
–20
–25
–30
1M
10M
100M
1G
O
Frequency (Hz)
OPA660 OTA FORWARD AMPLIFIER
I
Q
= 20mA R
1
= 160
R
= 51
R
2
= 180
R
3
= 56
R
4p
= 75
C
4p
= 5.6pF
20
100k
0.2Vp-p
5Vp-p
2.8Vp-p
1.4Vp-p
0.6Vp-p
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參數(shù)描述 |
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