AD45048

Rail-to-Rail Upstream ADSL Line Driver AD45048 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, RLOAD of 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) PIN CONFIGURATION OUT1 1 –IN1 2 +IN1 3 –VS 4 8 7 6 5 +VS –IN2 +IN2 04817-Sp0-001 OUT2 Figure 1. 8-Lead SOIC 10 0 –10 –20 –30 dBm –68dB –40 –50 –60 04817-Sp0-002 –70 APPLICATIONS Consumer xDSL modems Twisted pair line drivers ADSL CPE applications (Drop in replacement for TS613ID and EL1519CS) Audio applications –80 –90 CENTER 86.31174378kHz 1kHz/ SPAN 10kHz Figure 2. AD45048AR Upstream ADSL MTPR (13 dBm, CF = 5.3) 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 emitterfollower output stages and can deliver up to 23 V p-p differentially from a single 12 V supply in ADSL CPE line driving applications. The low distortion, high output current and wide output dynamic range make the AD45...