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| 型號： | AD8013AR-14 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP SINGLE SUPPLY 14-SOIC |
| 標(biāo)準(zhǔn)包裝： | 56 |
| 應(yīng)用： | 電流反饋 |
| 電路數(shù)： | 3 |
| -3db帶寬： | 140MHz |
| 轉(zhuǎn)換速率： | 1000 V/µs |
| 電流 - 電源： | 3.5mA |
| 電流 - 輸出 / 通道： | 30mA |
| 電壓 - 電源，單路/雙路(±)： | 4.2 V ~ 13 V，±2.1 V ~ 6.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-SOICN |
| 包裝： | 管件 |
AD8013
REV. A
–10–
4
+VS
AD8013
1.0F
0.1F
11
1.0F
0.1F
–VS
RG
RT
VIN
15
CL
VO
RF
RS
Figure 28. Circuit for Driving a Capacitive Load
Table II. Recommended Feedback and Series Resistors vs.
Capacitive Load and Gain
RS – Ohms
CL – pF
RF – Ohms
G = 2
G
≥ 3
20
2k
25
15
50
2k
25
15
100
3k
20
15
200
4k
15
300
6k
15
≥500
7k
15
10
0%
100
90
50ns
500mV
1V
VIN
VOUT
Figure 29. Pulse Response Driving a Large Load Capacitor.
CL = 300 pF, G = +2, RF = 6k, RS = 15
Overload Recovery
The three important overload conditions are: input common-
mode voltage overdrive, output voltage overdrive, and input
current overdrive. When configured for a low closed-loop gain,
the amplifier will quickly recover from an input common-
mode voltage overdrive; typically in under 25 ns. When con-
figured for a higher gain, and overloaded at the output, the
recovery time will also be short. For example, in a gain of +10,
with 15% overdrive, the recovery time of the AD8013 is about
20 ns (see Figure 30). For higher overdrive, the response is
somewhat slower. For 6 dB overdrive, (in a gain of +10), the
recovery time is about 65 ns.
10
0%
100
90
50ns
500mV
5V
VIN
VOUT
Figure 30. 15% Overload Recovery, G = +10 (RF = 300 ,
RL = 1 k
, V
S =
±5 V)
As noted in the warning under “Maximum Power Dissipation,”
a high level of input overdrive in a high noninverting gain circuit
can result in a large current flow in the input stage. Though this
current is internally limited to about 30 mA, its effect on the
total power dissipation may be significant.
High Performance Video Line Driver
At a gain of +2, the AD8013 makes an excellent driver for a
back terminated 75
video line (Figures 31, 32, and 33). Low
differential gain and phase errors and wide 0.1 dB bandwidth
can be realized. The low gain and group delay matching errors
ensure excellent performance in RGB systems. Figures 34 and
35 show the worst case matching.
75
75
VOUT
75
CABLE
75
75
CABLE
4
+VS
AD8013
0.1F
11
0.1F
–VS
RG
VIN
RF
Figure 31. A Video Line Driver Operating at a Gain of +2
(RF = RG from Table I)
FREQUENCY – Hz
1M
1G
10M
CLOSED-LOOP
GAIN
(NORMALIZED)
–
dB
100M
–6
+1
0
–1
–2
–3
–4
–5
0
–90
–180
–270
PHASE
SHIFT
–
Degrees
G = +2
RL = 150
VS = ±5V
VS = +5V
VS = ±5V
GAIN
PHASE
Figure 32. Closed-Loop Gain & Phase vs. Frequency
for the Line Driver
FREQUENCY – Hz
1M
1G
10M
NORMALIZED
GAIN
–
dB
100M
+0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
G = +2
RL = 150
VS = +5V
VS = ±5V
+0.2
Figure 33. Fine-Scale Gain Flatness vs. Frequency,
G = +2, RL = 150
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