Low Power, High Output Current
xDSL Line Driver
a
AD8016
24-Lead Batwing
(RB-24)
PIN CONFIGURATION
20-Lead PSOP3
(RP-20)
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
IOUT = 600 mA
40 V p-p Differential Output Voltage RL = 50 ⍀,
VS = ؎12 V
Low Single Tone Distortion
–75 dBc @ 1 MHz SFDR, RL = 100 ⍀, VO = 2 V p-p
MTPR = –75 dBc, 26 kHz to 1.1 MHz, ZLINE = 100 ⍀,
PLINE = 20.4 dBm
24
23
22
21
20
19
18
17
16
15
14
13
1
2
1
2
20
19
18
17
+V2
V
+V1
1
+V2
V
+V1
1
2
V
V
2
OUT
OUT
OUT
OUT
V
V
2
3
V
1
1
V
1
1
3
V 2
INN
INN
INN
INN
2
V
4
V
4
V
2
INP
INP
INP
INP
5
5
16 NC
15 NC
14 NC
AGND
AGND
AGND
AGND
PWDN0
DGND
–V1
NC
NC
NC
AGND
AGND
AGND
AGND
PWDN1
BIAS
AD8016
6
6
AD8016
7
7
8
8
13 PWDN1
12 BIAS
PWDN0
DGND
–V1
9
9
10
11
12
10
11
–V2
–V2
NC
NC = NO CONNECT
NC
NC = NO CONNECT
High Speed
28-Lead HTSSOP
(RE-28)
78 MHz Bandwidth (–3 dB), G = +5
40 MHz Gain Flatness
1000 V/s Slew Rates
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
NC
NC
NC
NC
NC
3
NC
+V
2
4
NC
IN
PRODUCT DESCRIPTION
–V
2
5
PWDN1
BIAS
–V2
IN
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.
6
V
2
OUT
7
+V2
+V1
AD8016ARE
8
–V1
9
V
1
1
1
DGND
NC
OUT
10
11
12
13
14
–V
IN
+V
PWDN0
NC
IN
NC
NC
NC
NC
NC
NC = NO CONNECT
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.
–75dBc
549.3
551.3 552.3 553.3 554.3 555.3 556.3 557.3 558.3 559.3
FREQUENCY – kHz
550.3
Figure 1. Multitone Power Ratio; VS = 12 V, 20.4 dBm
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.
Output Power into 100 Ω, Downstream
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.
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Tel: 781/329-4700
Fax: 781/326-8703
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© Analog Devices, Inc., 2000