AD8057 Analog Devices, AD8057 Datasheet

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AD8057

Manufacturer Part Number
AD8057
Description
Low Cost, Single, High Performance Voltage Feedback, 325 MHz Amplifier
Manufacturer
Analog Devices
Datasheet

Specifications of AD8057

-3db Bandwidth
325MHz
Slew Rate
1.15kV/µs
Vos
1mV
Ib
500nA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
7nV/rtHz
Vcc-vee
3V to 12V
Isy Per Amplifier
7.5mA
Packages
SOIC,SOT

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FEATURES
Low cost single (AD8057) and dual (AD8058)
High speed
Low noise
Low power
Low distortion
Wide supply range from 3 V to 12 V
Small packaging
APPLICATIONS
Imaging
DVD/CD
Photodiode preamp
Analog-to-digital driver
Professional cameras filters
GENERAL DESCRIPTION
The
mance amplifiers with a very low cost. The balance between
cost and performance make them ideal for many applications.
The AD8057 and AD8058 reduce the need to qualify a variety
of specialty amplifiers. The AD8057 and AD8058 are voltage
feedback amplifiers with the bandwidth and slew rate normally
found in current feedback amplifiers. The AD8057 and AD8058
are low power amplifiers having low quiescent current and a wide
supply range from 3 V to 12 V. They have noise and distortion
performance required for high end video systems as well as dc
performance parameters rarely found in high speed amplifiers.
The AD8057 and AD8058 are available in standard SOIC
packaging as well as tiny 5-lead SOT-23 (AD8057) and 8-lead
MSOP (AD8058) packages. These amplifiers are available in the
industrial temperature range of −40°C to +85°C.
Rev. C
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 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.
Trademarks and registered trademarks are the property of their respective owners.
325 MHz, −3 dB bandwidth (G = +1)
1000 V/μs slew rate
Gain flatness: 0.1 dB to 28 MHz
7 nV/√Hz
5.4 mA/amplifier typical supply current @ 5 V
−85 dBc @ 5 MHz, R
AD8057 is available in an 8-lead SOIC and 5-lead SOT-23
AD8058 is available in an 8-lead SOIC and an 8-lead MSOP
AD8057
(single) and
L
= 1 kΩ
AD8058
(dual) are very high perfor-
Voltage Feedback, 325 MHz Amplifier
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Low Cost, High Performance
–1
–2
–3
–4
–5
5
4
3
2
1
0
1
OUT1
–IN1
+IN1
–V
Figure 4. Small Signal Frequency Response
CONNECTION DIAGRAMS
Figure 3. RM-8 (MSOP) and R-8 (SOIC)
–V
S
–IN
+IN
NC
G = +10
S
V
4
OUT
–V
1
2
3
+IN
1
2
3
4
NC = NO CONNECT
S
Figure 1. RT-5 (SOT-23)
©2010 Analog Devices, Inc. All rights reserved.
10
2
Figure 2. R-8 (SOIC)
1
3
(Not to Scale)
(Not to Scale)
FREQUENCY (MHz)
AD8057
(Not to Scale)
AD8057
AD8058
AD8057/AD8058
G = +5
8
7
6
5
5
4
100
+V
–IN
NC
+V
V
NC
8
7
5
6
G = +1
OUT
S
G = +2
S
+V
OUT2
–IN2
+IN2
S
www.analog.com
1000

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AD8057 Summary of contents

Page 1

... The balance between cost and performance make them ideal for many applications. The AD8057 and AD8058 reduce the need to qualify a variety of specialty amplifiers. The AD8057 and AD8058 are voltage feedback amplifiers with the bandwidth and slew rate normally found in current feedback amplifiers ...

Page 2

... AD8057/AD8058 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Connection Diagrams....................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 5 Maximum Power Dissipation ..................................................... 5 ESD Caution .................................................................................. 5 REVISION HISTORY 10/10—Rev Rev. C Updated Format .................................................................. Universal Change to Third-Order Intercept Parameter, Table 1 ................. 3 Changes to Input Common-Mode Voltage Range Parameter, Table 2 ................................................................................................ 4 Changes to Figure 32 ...

Page 3

... Input Capacitance Input Common-Mode Voltage Range Common-Mode Rejection Ratio OUTPUT CHARACTERISTICS Output Voltage Swing Capacitive Load Drive POWER SUPPLY Operating Range Quiescent Current for AD8057 Quiescent Current for AD8058 Power Supply Rejection Ratio = 0 Ω, gain = +1, unless otherwise noted. Conditions 0 – ...

Page 4

... Input Resistance Input Capacitance Input Common-Mode Voltage Range Common-Mode Rejection Ratio OUTPUT CHARACTERISTICS Output Voltage Swing Capacitive Load Drive POWER SUPPLY Operating Range Quiescent Current for AD8057 Quiescent Current for AD8058 Power Supply Rejection Ratio Conditions Min 0 p-p ...

Page 5

... MAXIMUM POWER DISSIPATION The maximum power that can be safely dissipated by the Rating AD8057/AD8058 is limited by the associated rise in junction 12.6 V temperature. Exceeding a junction temperature of 175°C for an extended period can result in device failure. Although the 0.8 W AD8057/AD8058 is internally short-circuit protected, this may 0 ...

Page 6

... AD8057/AD8058 TYPICAL PERFORMANCE CHARACTERISTICS 4.5 (+) OUTPUT 4.0 VOLTAGE 3.5 ABS (–) 3.0 OUTPUT 2.5 2.0 1.5 1.0 0 100 1k LOAD RESISTANCE (Ω) Figure 6. Output Swing vs. Load Resistance –3.0 –3.5 –4.0 –4.5 –5.0 –I @ ±1.5V SUPPLY –5.5 –6.0 –I @ ±5V SUPPLY –6.5 –7.0 –7.5 –8.0 –40 –30 –20 – ...

Page 7

... Figure 16. Large Signal Step Response G = +1, kΩ, V 100mV 20mV/DIV 0V –100mV 1000 Figure 17. Small Signal Step Response G = –1, R Rev Page AD8057/AD8058 4ns/DIV = 1 kΩ ± See Figure 41 for Test Circuit 4ns/DIV = ±5 See Figure 41 for Test Circuit 4ns/DIV = 1 kΩ ...

Page 8

... AD8057/AD8058 5V 1V/DIV –5V 4ns/DIV Figure 18. Large Signal Step Response G = –1, R See Figure 42 for Test Circuit – –2 – +10 –4 – FREQUENCY (MHz) Figure 19. Small Signal Frequency Response –1 – – +10 – ...

Page 9

... DIV kΩ Ω 5.0V 1V/DIV 100 Ω 402 Ω Rev Page AD8057/AD8058 V = – +1V TO –1V OUT TIME (ns) Figure 27. Settling Time INPUT SIGNAL OUTPUT RESPONSE 0V 20ns/DIV Figure 28. Input Overload Recovery ± ...

Page 10

... AD8057/AD8058 0 –10 –20 –30 –40 –50 –60 –70 0.1 1 FREQUENCY (MHz) Figure 30. CMRR vs. Frequency 1.8V OUTPUT SIGNAL 1.7V 200mV/ DIV INPUT SIGNAL = 0.6V 20ns/DIV Figure 31. Output Overload Recovery, V 4.5V 500mV/ DIV 20ns/DIV Figure 32. Output Overload Recovery 100 V = ±2. 1kΩ –0.005 –0.010 – ...

Page 11

... L 100 1kΩ + 1kΩ L 0.1 9th 10th 11th = 1 kΩ L Rev Page AD8057/AD8058 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 38. Voltage Noise vs. Frequency 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 39. Current Noise vs. Frequency 1 0 ...

Page 12

... L Rev Page 1kΩ 4.7µF 0.01µF 0.001µF HP8130A V 1kΩ IN PULSE AD8057 50Ω 1ns R F AD8058 0.001µF 0.01µF 4.7µF –V S Figure 42. Test Circuit − kΩ OUT 1kΩ ...

Page 13

... PAL video systems. A filter that passes the video band and rejects frequencies at 27 MHz can be used to remove these fre- quencies from the video signal. Figure 46 shows a circuit that uses an AD8057 to create a single FET PROBE supply, 3-pole Sallen-Key filter. This circuit uses a single RC ...

Page 14

... coupling is not required, various ac coupling techniques can be used to eliminate this problem. LAYOUT The AD8057 and AD8058 are high speed op amps for use in a board layout that follows standard high speed design rules. Make all signal traces as short and direct as possible. In particular, keep ...

Page 15

... BSC 1.90 BSC 0.20 MAX 1.45 MAX 0.08 MIN 0.95 MIN SEATING 0.50 MAX PLANE 0.35 MIN COMPLIANT TO JEDEC STANDARDS MO-178-AA Figure 51. 5-Lead Small Outline Transistor Package [SOT-23] (RT-5) Dimensions shown in millimeters Rev Page AD8057/AD8058 0.80 8° 0.60 0° 0.40 0.50 (0.0196) 45° 0.25 (0.0099) 1.27 (0.0500) 0.40 (0.0157) 0.55 10° 0.45 0.20 5° 0.35 BSC 0° ...

Page 16

... AD8057ARZ-REEL −40°C to +85°C AD8057ARZ-REEL7 −40°C to +85°C AD8057ART-R2 −40°C to +85°C AD8057ART-REEL7 −40°C to +85°C AD8057ARTZ-R2 −40°C to +85°C AD8057ARTZ-REEL −40°C to +85°C AD8057ARTZ-REEL7 −40°C to +85°C AD8057AR-EBZ −40°C to +85°C AD8057ART-EBZ − ...

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