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PDF ( 数据手册 , 数据表 ) AD8005

零件编号 AD8005
描述 Current Feedback Amplifier
制造商 Analog Devices
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AD8005 数据手册, 描述, 功能
Data Sheet
FEATURES
Ultralow power
400 μA power supply current (4 mW on ±5 VS)
Specified for single supply operation
High speed
270 MHz, −3 dB bandwidth (G = +1)
170 MHz, −3 dB bandwidth (G = +2)
280 V/μs slew rate (G = +2)
28 ns settling time to 0.1%, 2 V step (G = +2)
Low distortion/noise
−63 dBc at 1 MHz, VO = 2 V p-p
−50 dBc at 10 MHz, VO = 2 V p-p
4.0 nV/√Hz input voltage noise at 10 MHz
Good video specifications (RL = 1 kΩ, G = +2)
Gain flatness 0.1 dB to 30 MHz
0.11% differential gain error
0.4° differential phase error
APPLICATIONS
Signal conditioning
A/D buffer
Power sensitive, high speed systems
Battery powered equipment
Loop/remote power systems
Communication or video test systems
Portable medical instruments
GENERAL DESCRIPTION
The AD8005 is an ultralow power, high speed amplifier with a
wide signal bandwidth of 170 MHz and slew rate of 280 V/μs.
This performance is achieved while consuming only 400 μA of
quiescent supply current. These features increase the operating
time of high speed battery powered systems without reducing
dynamic performance.
The current feedback design results in gain flatness of 0.1 dB to
30 MHz while offering differential gain and phase errors of 0.11%
and 0.4°. Harmonic distortion is low over a wide bandwidth with
THDs of −63 dBc at 1 MHz and −50 dBc at 10 MHz. Ideal features
for a signal conditioning amplifier or buffer to a high speed A-to-D
converter in portable video, medical or communication systems.
The AD8005 is characterized for +5 V and ±5 V supplies and
operates over the industrial temperature range of −40°C to
+85°C. The amplifier is supplied in 8-lead PDIP, 8-lead SOIC_N,
and 5-lead SOT-23 packages.
Rev. B
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
270 MHz, 400 μA
Current Feedback Amplifier
AD8005
FUNCTIONAL BLOCK DIAGRAMS
NC 1
–IN 2
+IN 3
–VS 4
AD8005
8 NC
7 +VS
6 OUT
5 NC
TOP VIEW
(Not to Scale)
NC = NO CONNECT
Figure 1. 8-Lead PDIP and SOIC_N
AD8005
OUT 1
–VS 2
+IN 3
5 +VS
4 –IN
TOP VIEW
(Not to Scale)
Figure 2. 5-Lead SOT-23
3
G = +2
2
VOUT = 200mV p-p
RL = 1k
1
0
–1
VS = ±5V
–2
–3
–4
VS = +5V
–5
–6
0.1
1 10
FREQUENCY (MHz)
100
500
Figure 3. Frequency Response; G = ±2, VS = +5 V or ±5 V
–40
G = +2
VOUT = 2V p-p
–50 RL = 1k
THIRD HARMONIC
–60
–70
SECOND HARMONIC
–80
–90
–100
1
FREQUENCY (MHz)
10
Figure 4. Distortion vs. Frequency; VS = ±5 V
20
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1996–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com







AD8005 pdf, 数据表
Data Sheet
–40
G = +2
VOUT = 2V p-p
–50 RL = 1kΩ
THIRD HARMONIC
–60
–70
SECOND HARMONIC
–80
–90
–100
1
FREQUENCY (MHz)
10
20
Figure 12. Distortion vs. Frequency; VS = ±5 V
0.10
MIN = –0.06 MAX = 0.03 p-p/MAX = 0.09
VS = ±5V
0.05
G = +2
RL = 1kΩ
0
–0.05
–0.10
0.06
MIN = –0.01 MAX = 0.39 p-p = 0.40
0.04
0.02
0
–0.02
–0.04
–0.06
VS = ±5V
G = +2
RL = 1kΩ
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
MODULATING RAMP LEVEL (IRE)
Figure 13. Differential Gain and Phase, VS = ±5 V
9
8
VS = ±5V
7
6
5
4
3 VS = +5V
2
1
0
10 100 1k
LOAD RESISTANCE (Ω)
Figure 14. Output Voltage Swing vs. Load
10k
AD8005
–40
G = +2
VOUT = 2V p-p
–50 RL = 1kΩ
THIRD HARMONIC
–60
–70
SECOND HARMONIC
–80
–90
–100
1
FREQUENCY (MHz)
10
20
Figure 15. Distortion vs. Frequency VS = +5 V
0.10
MIN = –0.08 MAX = 0.04 p-p/MAX = 0.12
VS = +5V
0.05
G = +2
RL = 1kΩ TO +1.5V
0
–0.05
–0.10
1.0
MIN = 0.00 MAX = 0.70 p-p = 0.70
0.5
0
–0.5
VS = +5V
G = +2
RL = 1kΩ TO +1.5V
–1.0
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
MODULATING RAMP LEVEL (IRE)
Figure 16. Differential Gain and Phase, VS = +5 V
9
f = 5MHz
8 G = +2
RL = 1kΩ
7
6
5
4
3
2
1
0
3 4 5 6 7 8 9 10
TOTAL SUPPLY VOLTAGES (V)
Figure 17. Output Swing vs. Supply
11
Rev. B | Page 7 of 16







AD8005 equivalent, schematic
Data Sheet
NOTES
AD8005
Rev. B | Page 15 of 16










页数 17 页
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