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부품번호 | AD8057 기능 |
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기능 | 325 MHz Amplifier | ||
제조업체 | Analog Devices | ||
로고 | |||
전체 16 페이지수
Data Sheet
Low Cost, High Performance
Voltage Feedback, 325 MHz Amplifier
AD8057/AD8058
FEATURES
Low cost single (AD8057) and dual (AD8058)
High speed
325 MHz, −3 dB bandwidth (G = +1)
1000 V/μs slew rate
Gain flatness: 0.1 dB to 28 MHz
Low noise
7 nV/√Hz
Low power
5.4 mA/amplifier typical supply current at 5 V
Low distortion
−85 dBc at 5 MHz, RL = 1 kΩ
Wide supply range from 3 V to 12 V
Small packaging
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
APPLICATIONS
Imaging
DVD/CD
Photodiode preamp
Analog-to-digital driver
Professional cameras filters
GENERAL DESCRIPTION
The AD8057 (single) and AD8058 (dual) are very high perfor-
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.
CONNECTION DIAGRAMS
AD8057
VOUT 1
5 +VS
–VS 2
+IN 3
4 –IN
(Not to Scale)
Figure 1. RT-5 (SOT-23)
AD8057
NC 1
8 NC
–IN 2
7 +VS
+IN 3
6 VOUT
–VS 4 (Not to Scale) 5 NC
NC = NO CONNECT
Figure 2. R-8 (SOIC)
OUT1 1
–IN1 2
AD8058
8 +VS
7 OUT2
+IN1 3
6 –IN2
–VS 4
(Not to Scale)
5 +IN2
Figure 3. RM-8 (MSOP) and R-8 (SOIC)
5
4
3
2
1
0 G = +1
–1
G = +5
–2
–3
G = +10
–4
G = +2
–5
1 10 100 1000
FREQUENCY (MHz)
Figure 4. Small Signal Frequency Response
Rev. E
Document Feedback
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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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2010–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
AD8057/AD8058
At TA = 25°C, VS = 5 V, RL = 100 Ω, RF = 0 Ω, gain = +1, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
Crosstalk, Output to Output
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
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
G = +1, VO = 0.2 V p-p
G = +1, VO = 2 V p-p
VO = 0.2 V p-p
G = +1, VO = 2 V step, RL = 2 kΩ
G = +2, VO = 2 V step
fC = 5 MHz, VO = 2 V p-p, RL = 1 kΩ
fC = 20 MHz, VO = 2 V p-p, RL = 1 kΩ
f = 5 MHz, G = +2
f = 100 kHz
f = 100 kHz
NTSC, G = +2, RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
NTSC, G = +2, RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
TMIN to TMAX
TMIN to TMAX
VO = ±1.5 V, RL = 2 kΩ to midsupply
VO = ±1.5 V, RL = 150 Ω to midsupply
+Input
RL = 1 kΩ
VCM = ±2.5 V
RL = 2 kΩ
RL = 150 Ω
30% overshoot
Min
50
45
48
3
54
Data Sheet
Typ Max Unit
300 MHz
155 MHz
28 MHz
700 V/µs
35 ns
–75 dBc
–54 dBc
−60 dB
7 nV/√Hz
0.7 pA/√Hz
0.05 %
0.05 %
0.10 Degrees
0.02 Degrees
1 5 mV
2.5 mV
3 μV/°C
0.5 2.5 µA
3.0 µA
0.75 µA
55 dB
52 dB
10
2
0.9 to 3.4
60
MΩ
pF
V
dB
0.9 to 3.8
1.2 to 3.4
30
V
V
pF
5.0 10 V
5.4 7.0 mA
13.5 14 mA
58 dB
Rev. E | Page 4 of 16
4페이지 Data Sheet
0
–0.1
–0.2
–0.3
–0.4
+IB @ ±5V
–0.5
+IB @ ±2.5V
–0.6 –IB @ ±5V
–0.7 –IB @ ±1.5V
–IB @ ±2.5V
+IB @ ±1.5V
–0.8
–40 –30 –20 –10
0 10 20 30 40 50 60 70 80 85
TEMPERATURE (°C)
Figure 12. Input Bias Current vs. Temperature
4
3
PSRR @ ±1.5V ±5V
2
1
0
–40 –30 –20 –10
0 10 20 30 40 50 60 70 80 85
TEMPERATURE (°C)
Figure 13. PSRR vs. Temperature
0
–10
–20
–PSRR VS = ±2.5V
–30
+PSRR VS = ±2.5V
–40
–50
–60
0.1
1 10 100
FREQUENCY (MHz)
Figure 14. PSRR vs. Frequency
1000
100mV
20mV/DIV
AD8057/AD8058
–100mV
4ns/DIV
Figure 15. Small Signal Step Response G = +1, RL = 1 kΩ, VS = ±5 V,
See Figure 41 for Test Circuit
5V
1V/DIV
–5V
4ns/DIV
Figure 16. Large Signal Step Response G = +1,RL = 1 kΩ, VS = ±5.0 V,
See Figure 41 for Test Circuit
100mV
20mV/DIV
0V
–100mV
4ns/DIV
Figure 17. Small Signal Step Response G = –1, RL = 1 kΩ,
See Figure 42 for Test Circuit
Rev. E | Page 7 of 16
7페이지 | |||
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