AD8398

VDSL, Dual Line Driver with Shutdown AD8398 FEATURES Current feedback Wide output swing 18.8 V p-p differential, (50 Ω RLOAD) from 12 V supply 20.0 V p-p differential, (100 Ω RLOAD) from 12 V supply High output current Linear output current of 250 mA peak Low distortion −100 dBc typical at 200 kHz −76 dBc typical at 4 MHz −66 dBc typical at 8 MHz −56 dBc typical at 16 MHz Low quiescent current 15 mA total High speed 200 MHz bandwidth (AV DIFF = +2 dB, −3 dB) 900 V/μs slew rate (RLOAD = 50 Ω) PIN CONFIGURATION 16 OUT A 15 NC 14 VCC 13 OUT B NC 1 −IN A 2 +IN A 3 GND 4 NC = NO CONNECT – + – + 12 NC 11 −IN B 10 +IN B 9 PD1 PD0 8 VEE 7 NC 5 NC 6 Figure 1. Thermally Enhanced, 4 mm × 4 mm, 16-Lead LFCSP_VQ TYPICAL APPLICATION 1/2 AD8398 VMID* APPLICATIONS VDSL line driver Consumer xDSL modems Twisted pair line drivers 1/2 06919-002 AD8398 VCC – VEE *VMID = 2 Figure 2. Typical PLC Driver Application GENERAL DESCRIPTION The AD8398 comprises two high-speed current feedback operational amplifiers. The high output current, high bandwidth, and fast slew rate make it particularly well suited as the line driver in VDSL and VDSL2 applications. The AD8398 is available in a thermally enhanced 4 mm × 4 mm, 16-lead LFCSP. The AD8398 incorporates power management functionality via two CMOS-compatible control pins, PD0 and PD1. These pins select one of four operating modes: full power, medium power, low power, and complete power down. In the power-down mode, the quiescent current d...