High Performance Video Op Amp
AD811
CONNECTION DIAGRAMS
+IN 3
–VS 4
7 +VS
6 OUTPUT
AD811
5 NC
NC = NO CONNECT
Figure 1. 8-Lead Plastic (N-8), CERDIP (Q-8), SOIC (R-8)
16
NC
NC 2
15
NC
–IN
3
14
+VS
NC 4
13
NC
+IN 5
12
OUTPUT
NC 6
11
NC
–VS 7
10
NC
9
NC
AD811
APPLICATIONS
GENERAL DESCRIPTION
A wideband current feedback operational amplifier, the AD811
is optimized for broadcast-quality video systems. The −3 dB
bandwidth of 120 MHz at a gain of +2 and the differential gain
and phase of 0.01% and 0.01° (RL = 150 Ω) make the AD811
an excellent choice for all video systems. The AD811 is designed
to meet a stringent 0.1 dB gain flatness specification to a bandwidth of 35 MHz (G = +2) in addition to low differential gain
and phase errors. This performance is achieved whether driving
one or two back-terminated 75 Ω cables, with a low power
supply current of 16.5 mA. Furthermore, the AD811 is specified
over a power supply range of ±4.5 V to ±18 V.
(Continued on page 3)
NC = NO CONNECT
00866-E-002
NC 1
NC 8
NC
NC
NC
NC
NC
Figure 2. 16-Lead SOIC (R-16)
3 2 1 20 19
NC
NC
–IN
NC
+IN
4
NC
NC
16 +VS
15 NC
14 OUTPUT
18
AD811
5
6
7
8
17
9 10 11 12 13
–VS
NC
NC
NC
NC
Video crosspoint switchers, multimedia broadcast systems
HDTV compatible systems
Video line drivers, distribution amplifiers
ADC/DAC buffers
DC restoration circuits
Medical
Ultrasound
PET
Gamma
Counter applications
00866-E-001
8 NC
NC 1
–IN 2
NC = NO CONNECT
00866-E-003
High speed
140 MHz bandwidth (3 dB, G = +1)
120 MHz bandwidth (3 dB, G = +2)
35 MHz bandwidth (0.1 dB, G = +2)
2500 V/µs slew rate
25 ns settling time to 0.1% (for a 2 V step)
65 ns settling time to 0.01% (for a 10 V step)
Excellent video performance (RL =150 Ω)
0.01% differential gain, 0.01° differential phase
Voltage noise of 1.9 nV/√Hz
Low distortion: THD = −74 dB @ 10 MHz
Excellent dc precision: 3 mV max input offset voltage
Flexible operation
Specified for ±5 V and ±15 V operation
±2.3 V output swing into a 75 Ω load (VS = ±5 V)
Figure 3. 20-Terminal LCC (E-20A)
NC 1
20 NC
NC 2
19 NC
NC 3
18 NC
–IN 4
17 +VS
NC 5
16 NC
+IN 6
15 OUTPUT
NC 7
14 NC
–VS
13 NC
8
NC 9
NC 10
AD811
12 NC
11 NC
NC = NO CONNECT
00866-E-004
FEATURES
Figure 4. 20-Lead SOIC (R-20)
Rev. E
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However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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© 2004 Analog Devices, Inc. All rights reserved.
