AD8014AR-REEL Analog Devices Inc, AD8014AR-REEL Datasheet - Page 9

• Manufacturer Part Number: AD8014AR-REEL
• Description: IC OPAMP CF LP LN LDIST 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD8014AR-REEL

• Rohs Status: RoHS non-compliant
• Amplifier Type: Current Feedback
• Number Of Circuits: 1
• Slew Rate: 4600 V/µs
• -3db Bandwidth: 480MHz
• Current - Input Bias: 5µA
• Voltage - Input Offset: 2000µV
• Current - Supply: 1.15mA
• Current - Output / Channel: 50mA
• Voltage - Supply, Single/dual (±): 4.5 V ~ 12 V, ±2.25 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Output Type: -
• Gain Bandwidth Product: -

Rev. C
Video Drivers
The AD8014 easily drives series terminated cables with video
signals. Because the AD8014 has such good output drive you
can parallel two or three cables driven from the same AD8014.
Figure 23 shows the differential gain and phase driving one
video cable. Figure 24 shows the differential gain and phase
driving two video cables. Figure 25 shows the differential gain
and phase driving three video cables.
Figure 23. Differential Gain and Phase R
150
Figure 24. Differential Gain and Phase R
75 , Driving Two Cables, G = +2
Figure 25. Differential Gain and Phase R
50 , Driving Three Cables, G = +2
–0.05
–0.10
–0.20
–0.40
–0.60
–0.10
–0.20
–0.30
–0.20
–0.40
–0.60
–0.20
–0.40
–0.60
–0.80
–0.20
–0.40
–0.60
–0.80
0.10
0.05
0.00
0.60
0.40
0.20
0.00
0.30
0.20
0.10
0.00
0.60
0.40
0.20
0.00
0.80
0.60
0.40
0.20
0.00
0.80
0.60
0.40
0.20
0.00
, Driving One Cable, G = +2
0.00
0.00
0.00
0.00
0.00
0.00
1ST
1ST
1ST
–0.02
0.02
0.01
2ND
0.07
2ND
0.44
0.10
2ND
3RD
0.03
0.24
3RD
3RD
0.04
0.10
0.52
0.32
0.05
0.21
0.54
0.53
4TH
0.05
0.40
4TH
4TH
0.05
0.26
5TH
0.06
0.43
5TH
0.52
0.57
5TH
0.05
0.28
6TH
0.06
0.44
6TH
0.52
0.59
6TH
0.04
0.29
7TH
0.05
0.43
7TH
0.50
0.58
7TH
F
0.05
0.40
8TH
F
F
0.04
0.30
8TH
0.48
0.56
8TH
= 500, ± 5 V, R
= 500, ± 5 V, R
= 500, ± 5 V, R
0.04
0.30
0.07
0.35
9TH
0.47
0.54
9TH
9TH
10TH 11TH
10TH 11TH
10TH 11TH
0.04
0.30
0.10
0.26
0.44
0.51
0.03
0.30
0.14
0.16
0.45
0.48
L
L
L
=
=
=
–9–
DRIVING CAPACITIVE LOADS
The AD8014 was designed primarily to drive nonreactive loads.
If driving loads with a capacitive component is desired, best
settling response is obtained by the addition of a small series
resistance as shown in Figure 26. The accompanying graph
shows the optimum value for R
worth noting that the frequency response of the circuit when
driving large capacitive loads will be dominated by the passive
roll-off of R
Choosing Feedback Resistors
Changing the feedback resistor can change the performance of
the AD8014 like any current feedback op amp. The table below
illustrates common values of the feedback resistor and the per-
formance which results.
Gain
+1
+2
+10
–1
–2
–10
+2
+2
+2
*V
O
= ±1 V.
30
20
10
40
R
1 k
1 k
1 k
1 k
1 k
1 k
2 k
750
499
0
F
SERIES
Figure 26. Driving Capacitive Load
and C
5
R
Open
1 k
111
1 k
499
100
2 k
750
499
G
L
.
Table II.
10
C
SERIES
L
– pF
–3 dB BW
V
R
480
280
50
160
140
45
200*
260*
280*
O
L
= 1 k
=
vs. Capacitive Load. It is
15
0.2 V
20
AD8014
–3 dB BW
V
R
430
260
45
150
130
40
180*
210*
230*
O
L
= 150
=
25
0.2 V