Low Cost 3.3 V-CMOS Mixed-Signal Front End (MxFE®) Converter for Broadband Modems 10-/12-Bit D/A Converter (TxDAC+?) 64/32 MSPS Input Word Rate 2?/4? Interpolating LPF or BPF Transmit Filter 128 MSPS DAC Output Update Rate Wide (26 MHz) Transmit Bandwidth Power-Down Mode 10-/12-Bit, 50 MSPS A/D Converter Fourth Order Low-Pass Filter 12 MHz or 26 MHz with Bypass ?6 dB to +36 dB Programmable Gain Amplifier Internal Clock Multiplier (PLL) Clock Outputs Voltage Regulator Controller 48-Lead LQFP Package