AD8005AR View Datasheet(PDF) - Analog Devices
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AD8005AR Datasheet PDF : 12 Pages
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a
270 MHz, 400 A
Current Feedback Amplifier
AD8005
FEATURES
Ultralow Power
400 A 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/s Slew Rate (G = +2)
28 ns Settling Time to 0.1%, 2 V Step (G = +2)
Low Distortion/Noise
–63 dBc @ 1 MHz, VO = 2 V p-p
–50 dBc @ 10 MHz, VO = 2 V p-p
4.0 nV/√Hz Input Voltage Noise @ 10 MHz
Good Video Specifications (RL = 1 k⍀, 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
PRODUCT 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.
3
2
G = +2
VOUT = 200mV p-p
1
RL = 1k⍀
0
–1
VS = ±5V
–2
–3
VS = +5V
–4
–5
–6
0.1
1
10
100
500
FREQUENCY – MHz
Figure 1. Frequency Response; G = +2, VS = +5 V or ±5 V
REV. A
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FUNCTIONAL BLOCK DIAGRAM
8-Lead Plastic DIP and SOIC
NC 1
–IN 2
+IN 3
–VS 4
AD8005
8 NC
7 +VS
6 OUT
5 NC
NC = NO CONNECT
5-Lead SOT-23
OUT 1
–VS 2
+IN 3
5 +VS
4 –IN
AD8005
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
will operate over the industrial temperature range of –40°C to
+85°C. The amplifier is supplied in 8-lead plastic DIP, 8-lead
SOIC and 5-lead SOT-23 packages.
–40
G = +2
–50 VOUT = 2V p-p
RL = 1k⍀
–60
–70
–80
3RD
2ND
2ND
3RD
–90
–100
1
10
20
FREQUENCY – MHz
Figure 2. Distortion vs. Frequency; VS = ±5 V
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999
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