Dual High Output Current,
High Speed Amplifier
a
AD8017
FEATURES
PIN CONFIGURATION
High Output Drive Capability
20 V p-p Differential Output Voltage, RL = 50 ⍀
10 V p-p Single-Ended Output Voltage While
Delivering 200 mA to a 25 ⍀ Load
Low Power Operation
8-Lead Thermal Coastline SOIC (SO-8)
AD8017
1
2
3
4
8
7
6
5
+V
OUT1
–IN1
+IN1
S
OUT2
–IN2
+IN2
–
+
5 V to 12 V Voltage Supply @ 7 mA/Amplifier
Low Distortion
–
+
–V
S
–78 dBc @ 500 kHz SFDR, RL = 100 ⍀, VO = 2 V p-p
–58 dBc Highest Harmonic @ 1 MHz, IO = 270 mA
(RL = 10 ⍀)
High Speed
160 MHz, –3 dB Bandwidth (G = +2)
1600 V/s Slew Rate
APPLICATIONS
xDSL PCI Cards
Consumer DSL Modems
Line Driver
12
10
8
Video Distribution
V
= ؎6V
S
6
PRODUCT DESCRIPTION
The AD8017 is a low cost, dual high speed amplifier capable of
driving low distortion signals to within 1.0 V of the supply rail.
It is intended for use in single supply xDSL systems where low
distortion and low cost are essential. The amplifiers will be able
to drive a minimum of 200 mA of output current per amplifier.
The AD8017 will deliver –78 dBc of SFDR at 500 kHz, required
for many xDSL applications.
4
V
= ؎2.5V
S
2
0
10
100
1000
1
LOAD RESISTANCE – ⍀
Figure 1. Output Swing vs. Load Resistance
Fabricated in ADI’s high speed XFCB process, the high bandwidth
and fast slew rate of the AD8017 keep distortion to a minimum, while
dissipating a minimum amount of power. The quiescent current of
the AD8017 is 7 mA/amplifier.
+V
S
+
Low distortion, high output voltage drive, and high output current
drive make the AD8017 ideal for use in low cost Customer Premise
End (CPE) equipment for ADSL, SDSL, VDSL and proprietary
xDSL systems.
R1
+
R
OR
135⍀
= 100⍀
LINE
POWER
IN dB
L
V
V
V
OUT
IN
REF
The AD8017 drive capability comes in a very compact form.
Utilizing ADI’s proprietary Thermal Coastline SOIC package,
the AD8017’s total (static and dynamic) power on 12 V supplies
is easily dissipated without external heat sink, other than to place
the AD8017 on a 4-layer PCB.
R2
–
N :N
P
S
–
TRANSFORMER
–V
S
Figure 2. Differential Drive Circuit for xDSL Applications
The AD8017 will operate over the commercial temperature
range –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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
© Analog Devices, Inc., 2002
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