AD8019 Datasheet | Analog Devices

a Features Low Distortion, High Output Current Amplifiers Operate from 12 V to ؎12 V Power Supplies, Ideal for High-Performance ADSL CPE, and x DSL Modems Low Power Operation 9 m A/Amp (Typ) Supply Current Digital (1-Bit) Power-Down Voltage Feedback Amplifiers Low Distortion Out-of-Band SFDR - 80 d Bc @ 100 k Hz into 100 ⍀ Line High Speed 175 MHz Bandwidth (- 3 d B), G = +1 400 V/␮ s Slew Rate High Dynamic Range VOUT to within 1.2 V of Power Supply APPLICATIONS ADSL, VDSL, HDSL, and Proprietary x DSL USB, PCI, PCMCIA Modems, and Customer Premise Equipment (CPE) PRODUCT DESCRIPTION 8-Lead SOIC (R-8) OUT1 - IN1 +IN1 - VS 1 2 3 4 DSL Line Driver with Power-Down AD8019 PIN CONFIGURATIONS 14-Lead TSSOP (RU-14) +VS OUT2 - IN2 +IN2 NC OUT1 - IN1 +IN1 - VS PWDN NC 1 2 3 4 5 6 7 AD8019AR 8 7 6 5 AD8019ARU 14 13 12 11 10 9 8 NC +VS OUT2 - IN2 +IN2 NC DGND NC = NO CONNECT The AD8019 is a low cost x DSL line driver optimized to drive a minimum of 13 d Bm into a 100 Ω load while delivering outstanding distortion performance. The AD8019 is designed on a 24 V high-speed bipolar process enabling the use of ± 12 V power supplies or 12 V only. When operating from a single 12 V supply the highly efficient amplifier architecture can typically deliver 170 m A output current into low impedance loads through a 1:2 turns ratio transformer. Hybrid designs using ± 12 V supplies enable the use of a 1:1 turns ratio transformer, minimizing attenuation of the receive signal. The AD8019 typically draws 9 m A/ amplifier quiescent current. A 1-bit digital power down feature reduces the quiescent current to approximately 1.6 m A/amplifier. Figure 1 shows typical Out of Band SFDR performance under ADSL CPE (upstream) conditions. SFDR is measured while driving a 13 d Bm ADSL DMT signal into a 100 Ω line with 50 Ω back termination. The AD8019 es in thermally enhanced 8-lead SOIC and 14-lead TSSOP packages. The 8-lead SOIC is pin-patible with the AD8017 12 V line driver. 10d B/DIV - 80d Bc 137.5...