AD8398A_16 Datasheet, PDF (1/13 Pages) Analog Devices – Single Port VDSL2 Line Driver with Shutdown

FEATURES
Voltage feedback
Wide output swing
18.4 V p-p differential, RLOAD, DIFF = 20 Ω from 12 V supply
High output current
Linear output current of 450 mA peak
Low distortion
−65 dBc for Profile 8b @ 20.4 dBm
−55 dBc for Profile 17a @ 14.5 dBm
High speed
85 MHz bandwidth (AV DIFF = 5)
APPLICATIONS
ADSL2+/VDSL2 CO/CPE line drivers
PLC line drivers
Consumer xDSL modems
Twisted pair line drivers
GENERAL DESCRIPTION
The AD8398A comprises two high speed, voltage feedback
operational amplifiers. When configured as a differential line
driver, the AD8398A is an ideal choice for ADSL2+, VDSL2, and
power line communications (PLC) applications. It has high
output current, high bandwidth, and fast slew rate, combined
with exceptional multitone power ratio (MTPR) and common-
mode stability. The AD8398A is available in a thermally enhanced
4 mm × 4 mm, 16-lead LFCSP.
Single Port VDSL2
Line Driver with Shutdown
AD8398A
FUNCTIONAL BLOCK DIAGRAM
NC 1
−IN A 2 ^–
+IN A 3 +
GND 4
12 NC
– _{11 −IN B}
+ 10 +IN B
9 PD1
NC = NO CONNECT
Figure 1. Thermally Enhanced, 4 mm × 4 mm, 16-Lead LFCSP_WQ
TYPICAL APPLICATION DIAGRAM
1/2
TIP
V_MID*
AD8398A
1/2
AD8398A
*V_MID ⁼
V_CC ⁺ V_EE
2
Figure 2. Typical VDSL2 Application
RING
The AD8398A incorporates power management functionality
via two CMOS-compatible control pins, PD0 and PD1. These
pins select one of four operating modes: full power, medium
power, low power, or complete power-down. In the power-down
mode, the quiescent current drops to 0.7 mA.
The AD8398A operates in the industrial temperature range of
−40°C to +85°C.
Rev. D
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