AD8393

Adaptive Linear Power™ 12 V ADSL-CO Line Driver AD8393 FEATURES Low 600 mW Total Power Consumption Includes 19.8 dBm Line Power MTPR –73 dBc, 12 V Supply Requires Only a Single 12 V Power Supply Can Achieve over 36 V p-p Differential Output while Processing Signals with Occasional Peaks (Such as Discrete Multitone) Analog Devices’ Adaptive Linear Power Architecture Enables High Port Density Central Office Line Cards Current Feedback Amplifier (CFB) Greater than 500 mA Peak Output Drive Current Capability 4 Power Modes Controlled by 2 Logic Pins AD8393-1 Input Range of 0.75 V to 1.2 V AD8393-2 Input Range of 0.3 V to 0.75 V APPLICATIONS ADSL DSLAMs, DLC xDSL Line Cards using DMT Signals Other Application Signals with Occasional Peaks –30 –40 –50 –73dBc –60 –70 –80 –90 –100 –110 –120 CENTER 513kHz 1kHz/DIV SPAN 10kHz Figure 1. AD8393-1 MTPR Performance (DMT Waveform, 5.5 CF, Line Power = 19.8 dBm) GENERAL DESCRIPTION +12V INTERNALLY GENERATED PUMPED SUPPLY VOUT1 The AD8393 is a low power, high output current, single-supply, ADSL-CO line driver that features ADI’s patent pending Adaptive Linear Power (ALP) architecture. The AD8393 ALP architecture offers increased port density in ADSL Central Office (CO) line card designs through improved line driver efficiency and simplified system design by operating from a single 12 V supply. The AD8393 ALP amplifier can provide 20.4 dBm of line power from a single 12 V dc supply, surpassing the efficiency of typical class AB line driv...