Low Power, High Output Current, Quad Op
Amp, Dual-Channel ADSL/ADSL2+ Line Driver
AD8394
FEATURES
4 current feedback, high output current amplifiers
Ideal for use as ADSL/ADSL2+ dual-channel, central office
(CO) line drivers
Dual-supply operation from ±6 V to ±12 V
Single-supply operation from 12 V to 24 V
Low power consumption
700 mW internal power dissipation while driving 20.4 dBm
ADSL2+ signal (CF = 5.5)
3 active power modes plus shutdown
Low leakage current in shutdown mode
High output voltage and current drive
Low distortion
MTPR down to −70 dBc
High speed: 300 V/μs slew rate
PIN CONFIGURATIONS
PD0 1, 2
PD1 1, 2
1
2
AD8394
+
–
+
–
20
19
18
17
VEE
V
OUT1
–V
IN1
–V
IN2
+V
IN1 3
+V
IN2 4
GND
5
I
ADJ
6
16
V
OUT2
15
V
OUT3
14
–V
IN3
13
–V
IN4
06951-001
+V
IN3 7
+V
IN4 8
9
+
–
+
–
23 PD0 1, 2
24 PD1 1, 2
22 VEE
APPLICATIONS
ADSL/ADSL2+ CO line drivers
xDSL line drives
High output current, low distortion amplifiers
DAC output buffers
LE
+V
IN1
1
+V
IN2
2
GND 3
I
ADJ
4
NC 5
+V
IN3
6
+V
IN4
7
+
–
+
–
20 V
OUT1
21 NC
TE
PD1 3, 4
PD0 3, 4
10
+
–
+
–
12
V
OUT4
11
VCC
Figure 1. AD8394AREZ, 20-Lead TSSOP_EP
19
18
17
16
15
14
13
–V
IN1
–V
IN2
V
OUT2
V
OUT3
–V
IN3
–V
IN4
V
OUT4
For more information about the AD8394 email:
broadband.products@analog.com.
Rev. Sp0
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 registered trademarks are the property of their respective owners.
O
The AD8394 is available in two thermally enhanced packages,
a 20-lead TSSOP_EP (AD8394AREZ) and a 4 mm × 5 mm
24-lead LFCSP (AD8394ACPZ).
B
The AD8394 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 can deliver 20.4 dBm to
a line, yet compensates for losses due to hybrid insertion and
back termination resistors. In addition, the low distortion, fast
slew rate, and high output current capability make the AD8394
ideal for other applications, such as medical instrumentation,
DAC output drivers, and other high peak current circuits. Four
bias modes are selectable via two digital inputs (PD0 and PD1).
SO
GENERAL DESCRIPTION
8
9
VCC 10
NC 11
PD1 3, 4
PD0 3, 4
NC 12
Figure 2. AD8394ACPZ, 24-Lead LFCSP, 4 mm × 5 mm
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.
06951-002
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