
Analog Devices
GENERAL DESCRIPTION
The AD45048 ADSL CPE line driver is a dual operational amplifier capable of driving high output current (230 mA); it features a rail-to-rail output stage that swings to within 0.5 V of the supply rails. The AD45048 rail-to-rail output stage surpasses the output voltage capability of typical emitter follower output stages and can deliver up to 23 V p-p differentially from a single 12 V supply in ADSL CPE line driving applications.
FEATURES
Dual op amp
Voltage feedback
Wide supply range: from 3.3 V to 24 V
Rail-to-rail output
Output swing to within 0.5 V of supply rails @ 230 mA
23 V p-p differential, RLOADof 50 Ω from 12 V supply
High output current
Linear output current of 230 mA peak into 25 Ω
−68 dBc MTPR @ 15 dBm (100 Ω telephone line)
Low noise
4.5 nV/√Hz voltage noise density @ 100 kHz
1.5 pA/√Hz current noise density @ 100 kHz
High speed
65 MHz bandwidth (AV= 1, −3 dB)
55 V/μs slew rate (RLOAD= 25 Ω)
APPLICATIONS
Consumer xDSL modems
Twisted pair line drivers
ADSL CPE applications(Drop in replacement for TS613ID and EL1519CS)
Audio applications