AD8016 Datasheet, PDF (1/20 Pages) Analog Devices – Low Power, High Output Current xDSL Line Driver

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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
PRODUCT DESCRIPTION
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.
Low Power, High Output Current
xDSL Line Driver
AD8016
PIN CONFIGURATION
20-Lead PSOP3
24-Lead Batwing
(RP-20)
(RB-24)
+V1 1
V_OUT1 2
V_INN1 3
V_INP1 4
NC 5
NC 6
NC 7
PWDN0 8
DGND 9
–V1 10
AD8016
20 +V2
19 VOUT2
18 VINN2
17 VINP2
16 NC
15 NC
14 NC
13 PWDN1
12 BIAS
11 –V2
NC = NO CONNECT
+V1 1
V_OUT1 2
V_INN1 3
V_INP1 4
AGND 5
AGND 6
AGND 7
AGND 8
PWDN0 9
DGND 10
–V1 11
NC 12
AD8016
24 +V2
23 V_OUT2
22 V_INN2
21 V_INP2
20 _AGND
19 _AGND
18 _AGND
17 _AGND
16 _PWDN1
15 _BIAS
14 _–V2
13 NC
NC = NO CONNECT
28-Lead HTSSOP
(RE-28)
NC 1
28 NC
NC 2
27 NC
NC 3
26 NC
+V_IN2 4
25 NC
–V_IN2 5
24 PWDN1
V_OUT2 6
23 BIAS
+V2 7
22 –V2
AD8016ARE
+V1 8
21 –V1
V_OUT1 9
–V_IN1 10
+V_IN1 11
20 DGND
19 NC
18 PWDN0
NC 12
17 NC
NC ¹³
16 NC
NC ¹⁴
15 NC
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; V_S = ±12 V, 20.4 dBm
Output Power into 100 Ω, Downstream
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
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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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© Analog Devices, Inc., 2000