参数资料
| 型号： | AD829SQ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO OPAMP HS LN 8-CDIP |
| 标准包装： | 1 |
| 应用： | 电压反馈 |
| 电路数： | 1 |
| -3db带宽： | 120MHz |
| 转换速率： | 230 V/µs |
| 电流 - 电源： | 5.3mA |
| 电流 - 输出 / 通道： | 32mA |
| 电压 - 电源，单路/双路(±)： | ±4.5 V ~ 18 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-CERDIP |
| 包装： | 管件 |
Data Sheet
AD829
Rev. I | Page 15 of 20
Figure 44 and Figure 45 show the closed-loop frequency
response of the AD829 for different closed-loop gains and
different supply voltages.
Figure 44. Closed-Loop Frequency Response for the Inverting Amplifier Using
Current Feedback Compensation
Figure 45. Closed-Loop Frequency Response vs. Supply for the Inverting
Amplifier Using Current Feedback Compensation
When a noninverting amplifier configuration using a current
feedback compensation is needed, the circuit shown in Figure 46 is
recommended. This circuit provides a slew rate twice that of the
shunt compensated noninverting amplifier of Figure 47 at the
expense of gain flatness. Nonetheless, this circuit delivers 95 MHz
bandwidth with 1 dB flatness into a back-terminated cable,
with a differential gain error of only 0.01% and a differential
phase error of only 0.015 at 4.43 MHz.
Figure 46. Noninverting Amplifier Connection Using Current Feedback
Compensation
Figure 47. Video Line Driver with a Flatness over Frequency Adjustment
LOW ERROR VIDEO LINE DRIVER
The buffer circuit shown in Figure 47 drives a back-terminated
75 video line to standard video levels (1 V p-p), with 0.1 dB
gain flatness to 30 MHz and with only 0.04° and 0.02% differential
phase and gain at the 4.43 MHz PAL color subcarrier frequency.
This level of performance, which meets the requirements for
high definition video displays and test equipment, is achieved
using only 5 mA quiescent current.
00880-044
FREQUENCY (MHz)
CLOSED-LOOP
GAIN
(dB)
1
10
–15
–12
–9
–6
–3
0
3
6
9
12
15
100
GAIN = –4
CCOMP = 2pF
GAIN = –2
CCOMP = 3pF
GAIN = –1
CCOMP = 4pF
VS = ±15V
RL = 1k
RF = 1k
VIN = –30dBm
00880-045
FREQUENCY (MHz)
OUTPUT
LEVEL
(dB)
1
10
–47
–44
–41
–38
–35
–32
–29
–26
–23
–20
–17
100
±5V
±15V
VIN = –20dBm
RL = 1k
RF = 1k
GAIN = –1
CCOMP = 4pF
00880-046
3
2
7
6
4
5
+
–
AD829
+15V
–15V
0.1
F
3pF
CCOMP
2k
2k
0.1
F
50
50k
50
50
COAX
CABLE
50
COAX
CABLE
VIN
VOUT
00880-047
3
2
7
6
5
4
+
–
AD829
+15V
0.1
F
30pF
CCOMP
–15V
0.1
F
300
300
75
75
75
50
COAX
CABLE
VIN
VOUT
OPTIONAL
2pF TO 7pF
FLATNESS
TRIM
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