High Performance Video Op Amp
Data Sheet
Rev. F
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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 (RL =150 Ω)
0.01% differential gain, 0.01° differential phase
Voltage noise of 1.9 nV/√Hz
Low distortion: THD = 74 dB at 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)
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
MIL-STD-883B parts available
CONNECTION DIAGRAMS
Figure 1. 8-Lead Plastic (N-8), CERDIP (Q-8), SOIC-N (R-8)
Figure 2. 16-Lead SOIC-W (RW-16)
Figure 3. 20-Terminal LCC (E-20-1)
GENERAL DESCRIPTION
A wideband current feedback operational amplifier, the
AD811is optimized for broadcast-quality video systems. The 3 dB
bandwidth of 120 MHz at a gain of +2 and the differential gain
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, th
e AD811 is specified over a power
supply range of ±4.5 V to ±18 V.
The
AD811 is also excellent for pulsed applications where
transient response is critical. It can achieve a maximum slew
rate of greater than 2500 V/μs with a settling time of less than
25 ns to 0.1% on a 2 V step and 65 ns to 0.01% on a 10 V step.
Th
e AD811 is ideal as an ADC or DAC buffer in data acquisition
systems due to its low distortion up to 10 MHz and its wide unity
gain bandwidth. Because th
e AD811 is a current feedback ampli-
fier, this bandwidth can be maintained over a wide range of
gains. The
AD811 also offers low voltage and current noise of
1.9 nV/√Hz and 20 pA/√Hz, respectively, and excellent dc
accuracy for wide dynamic range applications.
1
2
3
4
8
7
6
5
AD811
NC
–IN
+IN
–VS
+VS
NC
OUTPUT
NC
NC = NO CONNECT
00866-E
-001
NC
1
NC
2
–IN
3
NC
4
NC
16
NC
15
+VS
14
NC
13
+IN
5
OUTPUT
12
NC
6
NC
11
–VS 7
NC
10
NC
8
NC
9
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
AD811
TOP VIEW
(Not to Scale)
00866-
E
-002
4
NC
5
NC
6
–IN
7
NC
8
+IN
18
NC
17
NC
16
+VS
15
NC
14
OUTPUT
19
NC
20
NC
1
NC
2
NC
3
NC
13
NC
12
NC
11
NC
10
NC
9
–V
S
TOP VIEW
(Not to Scale)
00866
-E
-003
AD811
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.