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
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 ⍀, V O = 2 V p-p
MTPR = –75 dBc, 26 kHz to 1.1 MHz, ZLINE = 100 ⍀,
PLINE = 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
1
20
+V2
+V1
1
24
VOUT1
2
19
VOUT2
VOUT1
2
23
VOUT2
VINN1
3
18
VINN2
VINN1
3
22
VINN2
VINP1
4
17
VINP2
NC
5
16
NC
NC
6
15
NC
NC
– +
+ –
AD8016
7
14
8
DGND
9
12
BIAS
–V1
10
11
–V2
PWDN1
NC = NO CONNECT
VINP1
4
21
VINP2
AGND
5
20
AGND
AGND
6
19
AGND
AGND
7
18
AGND
AGND
8
17
AGND
PWDN0
9
16
PWDN1
DGND
10
15
BIAS
–V1
11
14
–V2
12
13
NC
AD8016
NC = NO CONNECT
28-Lead TSSOP-EP
(RE-28-1)
NC
28
NC
2
27
NC
NC
3
26
NC
+VIN2
4
25
NC
–VIN2
5
24
PWDN1
VOUT2
6
23
BIAS
+V2
7
22
–V2
+V1
8
21
–V1
VOUT1
9
20
DGND
–VIN1
10
19
NC
+VIN1
11
18
PWDN0
NC
12
17
NC
NC
13
16
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.
1
NC
PRODUCT DESCRIPTION
+ –
NC
NC
PWDN0
13
– +
+V2
14
15
NC
AD8016ARE
10dB/DIV
NC = NO CONNECT
–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)
Figure 1. Multitone Power Ratio; VS = ± 12 V, 20.4 dBm
Output Power into 100 Ω, Downstream
The AD8016 is available in a low cost 24-lead SO-Batwing,
a thermally enhanced 20-lead PSOP3, and a 28-lead TSSOP-EP
with an exposed lead frame (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 impedance 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. B
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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© 2003 Analog Devices, Inc. All rights reserved.
