AD8013 Analog Devices, AD8013 Datasheet - Page 12

• Manufacturer Part Number: AD8013
• Description: Single Supply, Low Power, Triple Video Amplifier
• Manufacturer: Analog Devices

Specifications of AD8013

• -3db Bandwidth: 480MHz
• Slew Rate: 1kV/µs
• Vos: 2mV
• Ib: 3µA
• # Opamps Per Pkg: 3
• Input Noise (nv/rthz): 3.5nV/rtHz
• Vcc-vee: 4.2V to 13V
• Isy Per Amplifier: 4mA
• Packages: DIP,SOIC

AD8013
2:1 Video Multiplexer
Configuring two amplifiers as unity gain followers and using the
third to set the gain results in a high performance 2:1 mux
(Figures 39 and 40). This circuit takes advantage of the very low
crosstalk between Channels 2 and 3 to achieve the OFF channel
isolation shown in Figure 40. This circuit can achieve
differential gain and phase of 0.03% and 0.07 respectively.
Figure 40. 2:1 Mux ON Channel Gain and Mux OFF Channel
Feedthrough vs. Frequency
Gain Switching
V
V
Figure 39. 2:1 Mux with High Isolation and Low
Differential Gain and Phase Errors
IN
IN
0.210 (5.33)
0.160 (4.06)
0.115 (2.93)
B
A
–1
–2
–3
–4
–5
–6
–7
–8
2
1
0
MAX
1M
0.022 (0.558)
0.014 (0.356)
13
12
10
9
14
1
2
3
PIN 1
2
3
14-Lead Plastic DIP (N-14)
0.795 (20.19)
0.725 (18.42)
DISABLE
DISABLE
14
8
0.100
(2.54)
BSC
10M
FREQUENCY – Hz
FEEDTHROUGH
0.070 (1.77)
0.045 (1.15)
R1
2k
R3
10
R4
10
R2
2k
8
7
0.060 (1.52)
0.015 (0.38)
0.280 (7.11)
0.240 (6.10)
SEATING
PLANE
0.130
(3.30)
MIN
100M
R6
845
6
5
GAIN
1
0.325 (8.25)
0.300 (7.62)
845
R5
0.015 (0.381)
0.008 (0.204)
7
Dimensions shown in inches and (mm).
0.195 (4.95)
0.115 (2.93)
1G
OUTLINE DIMENSIONS
–30
–40
–50
–60
–70
–80
V
OUT
–12–
The AD8013 can be used to build a circuit for switching between
any two arbitrary gains while maintaining a constant input
impedance. The example of Figure 41 shows a circuit for switching
between a noninverting gain of 1 and an inverting gain of 1. The
total time for channel switching and output voltage settling is
about 80 ns.
Figure 42. Switching Characteristic for Circuit of Figure 41
Figure 41. Circuit to Switch Between Gains of –1 and +1
0.1574 (4.00)
0.1497 (3.80)
0.0098 (0.25)
0.0040 (0.10)
V
SEATING
IN
PLANE
50
100
100
0%
90
10
0.0500
(1.27)
14
BSC
1
13
12
PIN 1
500mV
0.3444 (8.75)
0.3367 (8.55)
5V
14-Lead SOIC (R-14)
2k
0.0192 (0.49)
0.0138 (0.35)
14
500mV
1k
1k
0.0688 (1.75)
0.0532 (1.35)
8
7
698
845
0.2440 (6.20)
0.2284 (5.80)
0.0098 (0.25)
0.0075 (0.19)
10
6
5
9
698
845
DIS 3
+5V
DIS 1
–5V
11
4
1
3
7
8
200ns
8
0
0.0196 (0.50)
0.0099 (0.25)
15
0.0500 (1.27)
0.0160 (0.41)
V
OUT
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