AD811SQ/883B AD [Analog Devices], AD811SQ/883B Datasheet

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AD811SQ/883B

Manufacturer Part Number
AD811SQ/883B
Description
High Performance Video Op Amp
Manufacturer
AD [Analog Devices]
Datasheet

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a
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 (R
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
power supply current of 16.5 mA. Furthermore, the AD811 is
specified over a power supply range of 4.5 V to 18 V.
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.
REV. D
FEATURES
High Speed
Excellent Video Performance (R
Low Distortion: THD = –74 dB @ 10 MHz
Excellent DC Precision
Flexible Operation
APPLICATIONS
Video Crosspoint Switchers, Multimedia Broadcast
HDTV Compatible Systems
Video Line Drivers, Distribution Amplifiers
ADC/DAC Buffers
DC Restoration Circuits
Medical—Ultrasound, PET, Gamma and Counter
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)
0.01% Differential Gain, 0.01 Differential Phase
Voltage Noise of 1.9 nV Hz
3 mV max Input Offset Voltage
Specified for
Systems
Applications
2.3 V Output Swing into a 75
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
5
GAIN
6
PHASE
5 V and
7
SUPPLY VOLTAGE –
8
L
9
= 150 ) make the AD811 an
R
F
100 IRE
MODULATED RAMP
R
10
C
F
L
15 V Operation
= 649
= 3.58MHz
= 150
11
L
12
Volts
=150
13
cables, with a low
Load (V
14
)
15
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
S
=
5 V)
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/ s 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
16-Lead SOIC (R-16) Package 20-Lead SOIC (R-20) Package
SOIC (SO-8) Packages
–V
+IN
–IN
NC
NC
NC
NC
NC
8-Lead Plastic (N-8)
S
–IN
+IN
–V
NC
S
1
2
4
5
6
7
8
3
Cerdip (Q-8)
NC = NO CONNECT
NC = NO CONNECT
1
2
3
4
AD811
AD811
12
–3
–6
9
6
3
0
CONNECTION DIAGRAMS
1M
8
7
6
5
G = +2
R
R
World Wide Web Site: http://www.analog.com
L
G
NC
OUTPUT
NC
+V
16
13
10
15
14
12
11
9
= 150
= R
S
NC
NC
OUTPUT
NC
NC
NC
NC
+V
FB
S
High Performance
FREQUENCY – Hz
10M
20-Lead LCC (E-20A) Package
–V
–IN
+IN
V
+IN
–IN
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
S
Video Op Amp
V
S
=
S
4
5
6
7
8
© Analog Devices, Inc., 1999
=
10
1
2
3
4
6
7
9
5
8
5V
NC = NO CONNECT
NC = NO CONNECT
15V
3 2 1 20 19
9 10 11 12 13
AD811
100M
AD811
AD811
17
18
16
15
14
18
13
12
20
19
17
16
15
14
11
NC
NC
NC
OUTPUT
+V
NC
NC
NC
NC
+V
NC
OUTPUT
NC
NC
NC
S
S

Related parts for AD811SQ/883B

AD811SQ/883B Summary of contents

Page 1

FEATURES High Speed 140 MHz Bandwidth (3 dB +1) 120 MHz Bandwidth (3 dB +2) 35 MHz Bandwidth (0.1 dB +2) 2500 V/ s Slew Rate 25 ns Settling Time to 0.1% (For ...

Page 2

AD811–SPECIFICATIONS Model DYNAMIC PERFORMANCE Small Signal Bandwidth (No Peaking) – +10 0.1 dB Flat Full Power Bandwidth Slew Rate Settling Time to 0.1% Settling ...

Page 3

... ORDERING GUIDE Temperature Model Range AD811AN – +85 C AD811AR-16 – +85 C AD811AR-20 – +85 C AD811JR +70 C AD811SQ/883B – +125 C 5962-9313101MPA – +125 C AD811SE/883B – +125 C 5962-9313101M2A – +125 C AD811JR-REEL +70 C AD811JR-REEL7 +70 C AD811AR-16-REEL – ...

Page 4

AD811–Typical Performance Characteristics + SUPPLY VOLTAGE – Figure 1. Input Common-Mode Voltage Range vs. Supply 15V ...

Page 5

V = 15V S 150 100 S 50 –60 –40 – JUNCTION TEMPERATURE – C Figure 7. Short Circuit Current vs. Junction Temperature 0.1 V ...

Page 6

AD811 110 649 100 649 150 150 10k 100k FREQUENCY – Hz Figure 13. Common-Mode Rejection vs. Frequency 15V ...

Page 7

AD811 HP8130 50 PULSE GENERATOR –V 0 Figure 19. Noninverting Amplifier Connection 1V 100 OUT 0% 1V Figure 20. Small Signal Pulse Response, Gain ...

Page 8

AD811 –Typical Characteristics, Inverting Connection 0 HP8130 AD811 PULSE GENERATOR 0.1 F –V S Figure 25. Inverting Amplifier Connection 1V 100 OUT 0% 1V Figure 26. ...

Page 9

APPLICATIONS General Design Considerations The AD811 is a current feedback amplifier optimized for use in high performance video and data acquisition applications. Since it uses a current feedback architecture, its closed-loop –3 dB bandwidth is dependent on the magnitude of ...

Page 10

AD811 Driving Capacitive Loads The feedback and gain resistor values in Table I will result in very flat closed-loop responses in applications where the load capacitances are below 10 pF. Capacitances greater than this will result in increased peaking and ...

Page 11

Operation as a Video Line Driver The AD811 has been designed to offer outstanding perfor- mance at closed-loop gains of one or greater, while driving multiple reverse-terminated video loads. The lowest differential gain and phase errors will be obtained when ...

Page 12

AD811 An 80 MHz Voltage-Controlled Amplifier Circuit The voltage-controlled amplifier (VCA) circuit of Figure 40 shows the AD811 being used with the AD834, a 500 MHz, 4-quadrant multiplier. The AD834 multiplies the signal input by the dc control voltage, V ...

Page 13

A Video Keyer Circuit By using two AD834 multipliers, an AD811, and source, a special form of a two-input VCA circuit called a video keyer can be assembled. “Keying” is the term used in reference to ...

Page 14

AD811 than the VCA circuit of Figure 40. However, this cannot be achieved by lowering the feedback resistor, since below a critical value (not much less than 500 ) the AD811’s peaking may be unacceptable. This is ...

Page 15

Lead Plastic DIP (N) Package 0.39 (9.91) MAX 8 5 0.31 0.25 (7.87) (6.35 PIN 1 0.10 (2.54) BSC 0.035 0.01 (0.89 0.25) 0.165 0.01 (4.19 0.25) 0.18 0.03 0.125 (3.18) (4.57 0.75) MIN 0.018 0.003 SEATING ...

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