Datasheet AD8055, AD8056 (Analog Devices)

Low Cost, 300 MHz Voltage Feedback Amplifiers AD8055/AD8056 FEATURES CONNECTION DIAGRAMS Low cost single (AD8055) and dual (AD8056) NC 1 8 NC VOUT 1 5 +V Easy-to-use voltage feedback architecture S –IN 2 7 +VS High speed –VS 2 +IN 3 6 VOUT 300 MHz, −3 dB bandwidth (G = +1) +IN 3 4 –IN
02
–V
0
S 4 5 NC 1400 V/μs slew rate AD8055 AD8055
3- 06 001 01
20 ns settling to 0.1% NC = NO CONNECT
063- 01
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 VOS, 1.2 μA max IB S Small packaging –IN1 2 7 OUT AD8055 available in 5-lead SOT-23 +IN1 3 6 –IN2 AD8056 available in 8-lead MSOP –V
003
S 4 5 +IN2 AD8056
3- 06 01
Excellent video specifications (RL = 150 Ω, 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/μs 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
supply current and operate on a dual ±5 V or a single +12 V
High output drive current: over 60 mA
power supply, while capable of delivering over 60 mA of load

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
−40°C to +125°C.
Professional cameras 5 Video switchers R VOUT = 100mV p-p Special effects 4 C V RL = 100Ω IN VOUT A-to-D drivers 3 50Ω G = +1 Active filters 2 R R RF F = 0Ω G RL RC = 100Ω ) G = +2 B 1 R d F = 402Ω GENERAL DESCRIPTION ( IN 0 GA
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 –3 F = 909Ω
easy to use and available at a very low cost.
G = +5 –4 RF = 1000Ω –5
04 Despite their low cost, the AD8055 and AD8056 provide
0.3M 1M 10M 100M 1G
0 3-
FREQUENCY (Hz)
06 excellent overall performance. For video applications, their 01 differential gain and phase error are 0.01% and 0.02° into a Figure 4. Frequency Response 150 Ω load and 0.02% and 0.1° while driving four video loads (37.50 Ω).
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 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAMS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS MAXIMUM POWER DISSIPATION ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS APPLICATIONS FOUR-LINE VIDEO DRIVER SINGLE-ENDED-TO-DIFFERENTIAL LINE DRIVER LOW NOISE, LOW POWER PREAMP POWER DISSIPATION LIMITS RESISTOR SELECTION DRIVING CAPACITIVE LOADS OUTLINE DIMENSIONS ORDERING GUIDE