a
FEATURES
xDSL Line Driver that Features Full ADSL CO (Central
Office) Performance on 12 V Supplies
Low Power Operation
5 V to 12 V Voltage Supply
12.5 mA/Amp (Typ) Total Supply Current
Power-Reduced Keep-Alive Current of 4.5 mA/Amp
High Output Voltage and Current Drive
I
OUT
= 600 mA
40 V p-p Differential Output Voltage R
L
= 50 ,
V
S
= 12 V
Low Single Tone Distortion
–75 dBc @ 1 MHz SFDR, R
L
= 100 , V
O
= 2 V p-p
MTPR = –75 dBc, 26 kHz to 1.1 MHz, Z
LINE
= 100 ,
P
LINE
= 20.4 dBm
High Speed
78 MHz Bandwidth (–3 dB), G = +5
40 MHz Gain Flatness
1000 V/ s Slew Rates
Low Power, High Output Current
xDSL Line Driver
AD8016
PIN CONFIGURATION
24-Lead Batwing
20-Lead PSOP3
(RB-24)
(RP-20)
+V1
V
OUT
1
V
INN
1
V
INP
1
NC
NC
NC
PWDN0
DGND
–V1
1
2
3
4
5
6
7
8
9
10
20
19
18
17
+V2
V
OUT
2
V
INN
2
V
INP
2
NC
NC
NC
PWDN1
BIAS
–V2
+V1
V
OUT
1
V
INN
1
V
INP
1
AGND
AGND
AGND
AGND
PWDN0
DGND
–V1
NC
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
+V2
V
OUT
2
V
INN
2
V
INP
2
AGND
AGND
AGND
AGND
PWDN1
BIAS
–V2
NC
AD8016
16
15
14
13
12
11
AD8016
19
18
17
16
15
14
13
NC = NO CONNECT
NC = NO CONNECT
28-Lead HTSSOP
(RE-28)
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
NC
NC
NC
NC
PWDN1
BIAS
–V2
–V1
DGND
NC
PWDN0
NC
NC
NC
PRODUCT DESCRIPTION
+V
IN
2
–V
IN
2
V
OUT
2
+V2
+V1
V
OUT
1
–V
IN
1
+V
IN
1
NC
NC
NC
The AD8016 high output current dual amplifier is designed
for the line drive interface in Digital Subscriber Line systems
such as ADSL, HDSL2, and proprietary xDSL systems. The
drivers are capable, in full-bias operation, of providing 24.4 dBm
output power into low resistance loads, enough to power a
20.4 dBm line, including hybrid insertion loss.
AD8016ARE
22
21
20
19
18
17
16
15
NC = NO CONNECT
Figure 1. Multitone Power Ratio; V
S
=
±
12 V, 20.4 dBm
Output Power into 100
Ω
, Downstream
10dB/DIV
–75dBc
549.3 550.3 551.3 552.3 553.3 554.3 555.3 556.3 557.3 558.3 559.3
FREQUENCY – kHz
The AD8016 is available in a low cost 24-lead SOIC, a ther-
mally enhanced 20-lead PSOP, and a 28-lead HTSSOP with
an exposed leadframe (ePAD). Operating from
±12
V supplies,
the AD8016 requires only 1.5 W of total power dissipation
(refer to the Power Dissipation section for details) while driving
20.4 dBm of power downstream using the xDSL hybrid in Figure
33a and Figure 33b. Two digital bits (PWDN0, PWDN1) allow
the driver to be capable of full performance, an output “keep-alive
state,” or two intermediate bias states. The “keep-alive” state
biases the output transistors enough to provide a low imped-
ance at the amplifier outputs for back termination.
The low power dissipation, high output current, high output voltage
swing, flexible power-down, and robust thermal packaging enable
the AD8016 to be used as the Central Office (CO) terminal driver
in ADSL, HDSL2, VDSL, and proprietary xDSL systems.
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.
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., 2000
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