Image AD811
型号: AD811
厂商: Analog Devices Inc Analog Devices Inc
标准:
分类: 半导体
描述: high performance video Op amp
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High Performance  
Video Op Amp  
a
AD811  
CONNECTION DIAGRAMS  
FEATURES  
High Speed  
20-Lead LCC (E-20A) Package  
8-Lead Plastic (N-8)  
Cerdip (Q-8)  
SOIC (SO-8) Packages  
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 nVHz  
20  
1
2
19  
3
NC 4  
18 NC  
17  
NC  
–IN  
+IN  
NC  
+V  
1
2
3
4
8
7
6
5
5
6
7
NC  
–IN  
NC  
NC  
16 +V  
AD811  
S
S
15 NC  
OUTPUT  
NC  
+IN 8  
14 OUTPUT  
–V  
S
AD811  
9
10 1112 13  
NC = NO CONNECT  
NC = NO CONNECT  
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)  
16-Lead SOIC (R-16) Package 20-Lead SOIC (R-20) Package  
NC  
NC  
NC  
–IN  
NC  
+IN  
NC  
1
2
3
4
5
6
7
8
20  
19  
18  
NC  
NC  
NC  
+V  
1
2
3
4
16 NC  
15 NC  
NC  
NC  
+V  
14  
–IN  
NC  
S
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  
17  
16  
13 NC  
12  
S
NC  
+IN  
NC  
5
6
7
8
OUTPUT  
15 OUTPUT  
14 NC  
11 NC  
10  
9
–V  
S
NC  
NC  
AD811  
–V  
S
NC  
NC  
13  
12  
11  
NC  
NC  
NC  
9
NC = NO CONNECT  
AD811  
10  
NC  
NC = NO CONNECT  
PRODUCT DESCRIPTION  
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 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 ) 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 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.  
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  
0.20  
0.10  
G = +2  
0.18  
0.09  
RF = 649⍀  
RL = 150⍀  
9
6
3
VS = ؎15V  
FC = 3.58MHz  
100 IRE  
RG = RFB  
0.16  
0.14  
0.12  
0.10  
0.08  
0.06  
0.04  
0.02  
0.08  
0.07  
MODULATED RAMP  
RL = 150⍀  
0.06  
0.05  
0.04  
0.03  
0.02  
0.01  
VS = ؎5V  
PHASE  
0
–3  
–6  
GAIN  
6
1M  
10M  
FREQUENCY – Hz  
100M  
5
7
8
9
10 11 12 13 14 15  
SUPPLY VOLTAGE – Volts  
؎
REV. D  
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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999