Low Power, High Output Current, Quad Op
Amp, Dual-Channel ADSL/ADSL2+ Line Driver
AD8392A
PIN CONFIGURATIONS
FEATURES
Four current feedback, high current amplifiers
Ideal for use as ADSL/ADSL2+ dual-channel central office
(CO) line drivers
V
1
2
28
GND
EE
PD0 1, 2
PD1 1, 2
27 NC
3
26
25
NC
+V
+V
1
1
1
2
Low power operation
4
IN
IN
IN
1
2
–V
5
24 –V
2
IN
Power supply operation from 5 V (+10 V) up to 12 V (+24 V)
Less than 3 mA/amp quiescent supply current for full
power ADSL/ADSL2+ CO applications (20.4 dBm line
power, 5.5 CF)
V
6
23
22
21
20
V
2
OUT
V
OUT
7
NC
V
CC
NC
3
AD8392A
8
CC
V
9
V
4
OUT
OUT
Three active power modes plus shutdown
High output voltage and current drive
500 mA peak output drive current
42.6 V p-p differential output voltage
Low distortion
–V
3
10
11
12
13
14
19 –V
4
IN
IN
3
4
+V
3
18
17
16
15
+V
4
IN
IN
NC
NC
PD1 3, 4
PD0 3, 4
GND
V
EE
NC = NO CONNECT
−93 dBc @1 MHz second harmonic
−103 dBc @ 1 MHz third harmonic
Figure 1. AD8392AARE, 28-Lead TSSOP/EP
High speed: 515 V/μs differential slew rate
Additional functionality of AD8392AACP
On-chip, common-mode voltage generation
APPLICATIONS
ADSL/ADSL2+ CO line drivers
XDSL line drives
32 31 30 29 28 27 26 25
24
1
2
3
4
5
6
7
8
NC
NC
1
2
23 –V
2
–V
1
IN
IN
V
2
22
21
20
19
18
17
V
1
OUT
OUT
NC
V
V
CC
AD8392A
GENERAL DESCRIPTION
CC
NC
3
V
4
V
OUT
OUT
The AD8392A is comprised of four high output current, low
power consumption, operational amplifiers. It is particularly
well suited for the CO driver interface in digital subscriber line
systems, such as ADSL and ADSL2+. The driver is capable of
providing enough power to deliver 20.4 dBm to a line, while
compensating for losses due to hybrid insertion and back
termination resistors.
–V 4
IN
–V
3
IN
3
4
NC
NC
9
10 11 12 13 14 15 16
NC = NO CONNECT
Figure 2. AD8392AACP, 5 mm × 5 mm, 32-Lead LFCSP
The AD8392A is available in two thermally enhanced packages,
a 28-lead TSSOP/EP (AD8392AARE) and a 5 mm × 5 mm,
32-lead LFCSP (AD8392AACP). Four bias modes are available
via the use of two digital bits (PD1, PD0).
Additionally, the AD8392AACP provides VCOM pins for on-chip,
common-mode voltage generation.
The low power consumption, high output current, high output
voltage swing, and robust thermal packaging enable the
AD8392A to be used as the CO line drivers in ADSL and other
xDSL systems.
Rev. 0
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.