Low Power, High Output Current, Quad Op Amp,
Dual-Channel ADSL/ADSL2+ Line Driver

AD8392


Rev. 0
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infringements of patents or other rights of third parties that may result from its use.
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FEATURES
Four current feedback, high current amplifiers
Ideal for use as ADSL/ADSL2+ dual-channel Central Office
(CO) line drivers
Low power operation
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)
Three active power modes plus shutdown
High output voltage and current drive
400 mA peak output drive current
44 V p-p differential output voltage
Low distortion
−72 dBc @1 MHz second harmonic
−82 dBc @ 1 MHz third harmonic
High speed: 900 V/µs differential slew rate
Additional functionality of AD8392ACP
On-chip common-mode voltage generation

APPLICATIONS
ADSL/ADSL2+ CO line drivers
XDSL line drives
High output current, low distortion amplifiers
DAC output buffer

GENERAL DESCRIPTION
The AD8392 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. In addition, the low distortion, fast slew
rate, and high output current capability make the AD8392 ideal
for many other applications, including medical, instrumenta-
tion, DAC output drivers, and other high peak current circuits.
The AD8392 is available in two thermally enhanced packages, a
28-lead TSSOP EP (AD8392ARE) and a 5 mm × 5 mm 32-lead
LFCSP (AD8392ACP). Four bias modes are available via the use
of two digital bits (PD1, PD0).

PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NC = NO CONNECT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AD8392
PD0 1, 2
PD1 1, 2
+V
IN
1
NC
V
OUT
1
–V
IN
1
V
EE
1, 2
NC
NC
+V
IN
2
NC
V
OUT
2
–V
IN
2
V
OUT
3
–V
IN
3
+V
IN
3
GND
NC
NC
V
CC
3, 4
–V
IN
4
+V
IN
4
V
EE
3, 4
PD0 3, 4
PD1 3, 4
GND
V
CC
1, 2
V
OUT
4
04802-0-001
1
3
2
4

Figure 1. AD8392ARE, 28-Lead TSSOP/EP
1
2
3
4
5
6
7
8
9101 121314
24
23
22
21
20
19
18
17
1615
32 31 30 29 28 27 2526
AD8392
+V
IN
1
NC
V
OUT
1
–V
IN
1
V
EE
1, 2
NC +V
IN
2
NC
V
OUT
2
–V
IN
2
V
OUT
3
–V
IN
3
+V
IN
3
GND
NC
V
CC
3, 4
–V
IN
4
+V
IN
4
V
EE
3, 4
PD
0 3, 4
GND
V
CC
1, 2
V
OUT
4
NC
NC
NC
NC
V
COM
3, 4
PD
1 3, 4
V
COM
1, 2
PD
1 1, 2
PD
0 1, 2
04802-0-002
1
3
2
4

Figure 2. AD8392ACP, 32-Lead LFCSP 5 mm × 5 mm
Additionally, the AD8392ACP 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 AD8392
to be used as the CO line drivers in ADSL and other xDSL sys-
tems, as well as other high current, single-ended or differential
amplifier applications.