Datasheet

High Performance Video Op Amp
AD811
Rev. E
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FEATURES
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 (R
L
=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 (V
S
= ±5 V)
APPLICATIONS
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
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° (R
L
= 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 band-
width 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)
CONNECTION DIAGRAMS
1
2
3
4
8
7
6
5
AD811
NC
–IN
+IN
–V
S
+V
S
NC
OUTPUT
NC
NC = NO CONNECT
00866-E-001
Figure 1. 8-Lead Plastic (N-8), CERDIP (Q-8), SOIC (R-8)
NC
+V
S
–V
S
AD811
NC
–IN
NC
+IN
NC
NC
NC
NC
OUTPUT
NC
NC = NO CONNECT
NC
NC
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
00866-E-002
Figure 2. 16-Lead SOIC (R-16)
AD811
NC
NC
NC
OUTPUT
–V
S
+V
S
NC
NC
NC
NC
–IN
+IN
NC NC
NC
NC
NC
NC = NO CONNECT
NC
NC NC
1232019
18
17
16
15
14
9
10 11
12 13
4
5
6
7
8
00866-E-003
Figure 3. 20-Terminal LCC (E-20A)
+IN
–IN
AD811
NC
NC
NC
NC
NC
NC
+V
S
–
V
S
NC
OUTPUT
NC
NC
NC = NO CONNECT
NC
NC
NC
NC
NC
NC
3
4
5
6
7
8
9
10
18
17
16
15
14
13
12
11
1
2
20
19
00866-E-004
Figure 4. 20-Lead SOIC (R-20)