Datasheet

Low Power, High Output Current, Quad Op
Amp, Dual-Channel ADSL/ADSL2+ Line Driver
AD8392A
Rev. 0
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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
500 mA peak output drive current
42.6 V p-p differential output voltage
Low distortion
−93 dBc @1 MHz second harmonic
−103 dBc @ 1 MHz third harmonic
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
GENERAL DESCRIPTION
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.
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 V
COM
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.
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
AD8392A
PD0 1, 2
PD1 1, 2
+V
IN
1
NC
V
OUT
1
–V
IN
1
V
EE
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
–V
IN
4
+V
IN
4
V
EE
PD0 3, 4
PD1 3, 4
GND
V
CC
V
OUT
4
1
34
2
06477-001
Figure 1. AD8392AARE, 28-Lead TSSOP/EP
NC = NO CONNECT
1
2
3
4
5
6
7
8
91011121314
24
23
22
21
20
19
18
17
1615
32 31 30 29 28 27 2526
AD8392A
+V
IN
1
NC
V
OUT
1
–V
IN
1
V
EE
NC +V
IN
2
NC
V
OUT
2
–V
IN
2
V
OUT
3
–V
IN
3
+V
IN
3
GND
NC
V
CC
–V
IN
4
+V
IN
4
V
EE
PD0 3, 4
GND
V
CC
V
OUT
4
NC
NC
NC
NC
V
COM
3, 4
PD1 3, 4
V
COM
1, 2
PD1 1, 2 PD0 1, 2
1
3
2
4
06477-002
Figure 2. AD8392AACP, 5 mm × 5 mm, 32-Lead LFCSP