Low Cost, 300 MHz Voltage Feedback Amplifiers AD8055/AD8056 FEATURES CONNECTION DIAGRAMS Low cost single (AD8055) and dual (AD8056) 1 NC 8 NC 1 V 5 +V OUT S Easy-to-use voltage feedback architecture 2 IN 7 +V S High speed V 2 S 3 +IN 6 V OUT 300 MHz, 3 dB bandwidth (G = +1) 3 +IN 4 IN V 4 5 NC S 1400 V/s slew rate AD8055 AD8055 20 ns settling to 0.1% NC = NO CONNECT Low distortion: 72 dBc 10 MHz Figure 1. N-8 and R-8 Figure 2. RJ-5 Low noise: 6 nV/Hz OUT1 1 8 +V Low dc errors: 5 mV max V , 1.2 A max I S OS B IN1 2 7 OUT Small packaging AD8055 available in 5-lead SOT-23 +IN1 3 6 IN2 AD8056 available in 8-lead MSOP 4 5 V +IN2 S AD8056 Excellent video specifications (RL = 150 , G = +2) Figure 3. N-8, R-8, and RM-8 Gain flatness 0.1 dB to 40 MHz 0.01% differential gain error Their 0.1 dB flatness out to 40 MHz, wide bandwidth out to 0.02 differential phase error 300 MHz, along with 1400 V/s slew rate and 20 ns settling Drives 4 video loads (37.5 V) with 0.02% differential time, make them useful for a variety of high speed applications. Gain and 0.1 differential phase Low power, 5 V supplies 5 mA typ/amplifier power The AD8055 and AD8056 require only 5 mA typ/amplifier of supply current and operate on a dual 5 V or a single +12 V supply current power supply, while capable of delivering over 60 mA of load High output drive current: over 60 mA current. The AD8055 is available in a small 8-lead PDIP, an 8-lead SOIC, and a 5-lead SOT-23, while the AD8056 is available in an APPLICATIONS 8-lead MSOP. These features make the AD8055/AD8056 ideal Imaging for portable and battery-powered applications where size and Photodiode preamps power are critical. These amplifiers in the R-8, N-8, and RM-8 Video line drivers packages are available in the extended temperature range of Differential line drivers 40C to +125C. Professional cameras 5 Video switchers V = 100mV p-p OUT R C R = 100 Special effects 4 L V V IN OUT 50 A-to-D drivers 3 G= +1 Active filters R =0 2 R F F R R G L R =100 C G=+2 1 R =402 F GENERAL DESCRIPTION 0 The AD8055 (single) and AD8056 (dual) voltage feedback 1 amplifiers offer bandwidth and slew rate typically found in 2 G=+10 current feedback amplifiers. Additionally, these amplifiers are R =909 F 3 easy to use and available at a very low cost. G= +5 4 R = 1000 F 5 Despite their low cost, the AD8055 and AD8056 provide 0.3M 1M 10M 100M 1G FREQUENCY (Hz) excellent overall performance. For video applications, their Figure 4. Frequency Response differential gain and phase error are 0.01% and 0.02 into a 150 load and 0.02% and 0.1 while driving four video loads (37.50 ). Rev. J 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. GAIN (dB) 01063-001 01063-003 01063-004 01063-002AD8055/AD8056 TABLE OF CONTENTS Features .............................................................................................. 1 Applications..................................................................................... 12 Applications....................................................................................... 1 Four-Line Video Driver............................................................. 12 General Description ......................................................................... 1 Single-Ended-to-Differential Line Driver............................... 12 Connection Diagrams...................................................................... 1 Low Noise, Low Power Preamp................................................ 12 Revision History ............................................................................... 2 Power Dissipation Limits .......................................................... 13 Specifications..................................................................................... 3 Resistor Selection ....................................................................... 13 Absolute Maximum Ratings............................................................ 5 Driving Capacitive Loads.......................................................... 13 Maximum Power Dissipation ..................................................... 5 Outline Dimensions ....................................................................... 14 ESD Caution.................................................................................. 5 Ordering Guide .......................................................................... 16 Typical Performance Characteristics ............................................. 6 Test Circuits..................................................................................... 11 REVISION HISTORY 2/06Rev. I to Rev. J 10/02Rev. E to Rev. F Changes to Format .............................................................Universal Text Changes to Reflect Extended Temperature Range for Updated Outline Dimensions ....................................................... 15 R-8, N-8 Packages..............................................................................1 Changes to Ordering Guide .......................................................... 16 Changes to Specifications.................................................................2 Changes to Absolute Maximum Ratings........................................3 Figure 2 Replaced ..............................................................................3 2/04Rev. H to Rev. I Changes to Ordering Guide .............................................................3 Changes to Features.......................................................................... 1 Outline Dimensions Updated....................................................... 11 Changes to Ordering Guide ............................................................ 3 7/01Rev. D to Rev. E 6/03Rev. G to Rev. H TPC 24 Replaced with New Graph .................................................7 Changes to Absolute Maximum Ratings ....................................... 3 Updated Ordering Guide................................................................. 3 3/01Rev. C to Rev. D Updated Outline Dimensions ....................................................... 11 Edit to Curve in TPC 23 ...................................................................7 2/03Rev. F to Rev. G 2/01Rev. B to Rev. C Changes to Product Description .................................................... 1 Edits to Text at Top of Specifications Page (65 to 5)....................2 Changes to Specifications................................................................ 2 Change to Ordering Guide.............................................................. 3 Outline Dimensions Updated ....................................................... 11 Rev. J Page 2 of 16