ADLD8404 Datasheet | Analog Integrations Corporation

FEATURES Ultra Low Power, Adaptive Linear Power™, Dual-Port ADSL2+/VDSL2 Line Driver ADLD8404 Two differential DSL channels prised of current feedback, high output current amplifiers with integrated resistors and biasing network Ideal for use as ADSL2+/VDSL2 dual-channel Central Office (CO) & FTTX (Remote Cabinet) line drivers Low power consumption using Class H Technology Single +14V supply operation 20.4 d Bm line power, 1:1.4 transformer 780 m W/channel total power dissipation while driving 20.4 d Bm (includes 110m W line power) 475 m W/channel total power dissipation while driving 14.5 d Bm (includes line power) High output voltage and current drive 40 V p-p differential output voltage Low distortion -65 d Bc typical MTPR @ 20.4 d Bm, 26 k Hz to 2.2 MHz -55 d Bc typical MTPR @ 14.5 d Bm, 5.2MHz to 17.6MHz Low cost protection ponents enable K20 & GR1089 pliance Protected by US Patent 6,636,103 + VOPA _ VOCM _ VONA INN + Figure 1. Channel 1 Internal Schematics APPLICATIONS ADSL2+/VDSL2 CO line drivers ADSL2+/VDSL2 FTTX line drivers GENERAL DESCRIPTION The ADLD8404 is prised of two differential, high output current, low power consumption operational amplifiers. It is particularly well suited for the CO & FTTX driver interface in digital subscriber line systems, such as ADSL2+ and VDSL2. The driver can deliver 20.4 d Bm to a line while pensating for losses due to hybrid insertion and back-termination resistors. ADLD8404 uses second- generation Adaptive Linear Power (Class H) architecture to achieve unprecedented power efficiency while using a single power supply and three external capacitors. Further functionality permits the shutdown of pumps for enhanced power savings for line power < 14.5d Bm. This yields the smallest PCB footprint and lowest total cost of ownership. The low power consumption, high output current, high output voltage swing, and robust thermal packaging enable the ADLD8404 to be the CO or FTTX line driver in ADSL2+ and VDSL2 systems. The...