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부품번호 | 5962-9313101MPA 기능 |
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기능 | High Performance Video Op Amp | ||
제조업체 | Analog Devices | ||
로고 | |||
전체 15 페이지수
a
High Performance
Video Op Amp
AD811
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/s 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 ⍀)
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 ⍀ 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 and Counter
Applications
PRODUCT DESCRIPTION
The AD811 is a wideband current-feedback operational ampli-
fier, optimized for broadcast quality video systems. The –3 dB
bandwidth of 120 MHz at a gain of +2 and 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 band-
width of 35 MHz (G = +2) in addition to the 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.
0.10 0.20
0.09
0.08
0.07
0.06
RF = 649⍀
FC = 3.58MHz
100 IRE
MODULATED RAMP
RL = 150⍀
0.18
0.16
0.14
0.12
0.05 0.10
0.04 PHASE
0.08
0.03 0.06
0.02 GAIN
0.04
0.01 0.02
REV. D
56
7 8 9 10 11 12 13 14 15
SUPPLY VOLTAGE – ؎Volts
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
CONNECTION DIAGRAMS
8-Lead Plastic (N-8)
20-Lead LCC (E-20A) Package
Cerdip (Q-8)
SOIC (SO-8) Packages
3 2 1 20 19
NC 1
–IN 2
+IN 3
–VS 4
AD811
8 NC
7 +V S
6 OUTPUT
5 NC
NC = NO CONNECT
NC 4
NC 5
–IN 6
NC 7
+IN 8
AD811
18 NC
17 NC
16 +VS
15 NC
14 OUTPUT
9 10 11 12 13
NC = NO CONNECT
16-Lead SOIC (R-16) Package 20-Lead SOIC (R-20) Package
NC 1
NC 2
–IN 3
NC 4
+IN 5
NC 6
–VS 7
NC 8
AD811
16 NC
15 NC
14 +V S
13 NC
12 OUTPUT
11 NC
10 NC
9 NC
NC = NO CONNECT
NC 1
NC 2
NC 3
–IN 4
NC 5
+IN 6
NC 7
–VS 8
NC 9
NC 10
AD811
20 NC
19 NC
18 NC
17 +V S
16 NC
15 OUTPUT
14 NC
13 NC
12 NC
11 NC
NC = NO CONNECT
The AD811 is also excellent for pulsed applications where tran-
sient 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 volt step and 65 ns to 0.01% on a 10 volt step.
The AD811 is ideal as an ADC or DAC buffer in data acquisi-
tion systems due to its low distortion up to 10 MHz and its wide
unity gain bandwidth. Because the AD811 is a current feedback
amplifier, 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 accu-
racy for wide dynamic range applications.
12
G = +2
9 RL = 150⍀
RG = RFB
VS = ؎15V
6
3
VS = ؎ 5V
0
–3
–6
1M
10 M
FREQUENCY – Hz
100 M
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999
AD811–Typical Performance Characteristics
20
TA = +25؇C
15
20
15
10 10
55
TA = +25؇C
NO LOAD
RL = 150⍀
0
0 5 10 15 20
SUPPLY VOLTAGE – ؎Volts
Figure 1. Input Common-Mode Voltage Range vs. Supply
0
0 5 10 15 20
SUPPLY VOLTAGE – ؎ Volts
Figure 4. Output Voltage Swing vs. Supply
35
30
VS = ؎15V
25
20
15
VS = ؎5V
10
5
0
10 100
1k 10k
LOAD RESISTANCE – ⍀
Figure 2. Output Voltage Swing vs. Resistive Load
21
18
15 VS = ؎15V
12
VS = ؎5V
9
6
3
–60 –40 –20 0 20 40 60 80 100 120 140
JUNCTION TEMPERATURE – ؇C
Figure 5. Quiescent Supply Current vs. Junction
Temperature
10
NONINVERTING INPUT
؎5 TO ؎15V
0
VS = ؎5V
INVERTING
INPUT
–10
–20 VS = ؎15V
–30
–60 –40
–20 0 20 40 60 80 100
JUNCTION TEMPERATURE – ؇C
120 140
Figure 3. Input Bias Current vs. Junction Temperature
10
8
6 VS = ؎5V
4
2
0
–2
–4 VS = ؎15V
–6
–8
–10
–60 –40 –20 0
20 40 60 80 100 120 140
JUNCTION TEMPERATURE – ؇C
Figure 6. Input Offset Voltage vs. Junction Temperature
–4– REV. D
4페이지 Typical Characteristics, Noninverting Connection–AD811
RG
VIN
HP8130
PULSE
50⍀
GENERATOR
RFB
+VS
AD811
+
0.1F
VOUT TO
TEKTRONIX
P6201 FET
PROBE
RL
0.1F –VS
Figure 19. Noninverting Amplifier Connection
9
G = +1
6 RL = 150⍀
RG =
3
0
VS = ؎15V
RFB = 750⍀
–3
VS = ؎5V
–6 RFB = 619⍀
–9
–12
1M
10M
FREQUENCY – Hz
100M
Figure 22. Closed-Loop Gain vs. Frequency, Gain = +1
100
VIN 90
1V
10ns
VOUT 10
0%
1V
Figure 20. Small Signal Pulse Response, Gain = +1
26
G = +10
23 RL = 150⍀
20
VS = ؎15V
RFB = 511⍀
17
14
VS = ؎5V
RFB = 442⍀
11
8
1M 10M 100M
FREQUENCY – Hz
Figure 23. Closed-Loop Gain vs. Frequency, Gain = +10
100
VIN 90
100mV
10ns
100
VIN 90
1V
20ns
VOUT 10
0%
1V
Figure 21. Small Signal Pulse Response, Gain = +10
VOUT 10
0%
10V
Figure 24. Large Signal Pulse Response, Gain = +10
REV. D
–7–
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5962-9313101MPA | High Performance Video Op Amp | Analog Devices |
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