a
FEATURES Low Cost, 3.
3 V-
CMOS, Mixed Signal, Front End Converter for Broadband Modems 10-Bit D/A Converter (TxDAC+®) 50 MSPS Input Word Rate 2؋ Interpolating Low-Pass Transmit Filter 100 MSPS DAC Output Update Rate Wide (21 MHz) Transmit Bandwidth Power-Down Modes 10-Bit, 50 MSPS A/D Converter Fourth Order LPF with Selectable Cutoff Frequency Dual Mode Programmable Gain Amplifier Internal Clock Multiplier (PLL) Two Auxiliary Clock Outputs 48-Lead LQFP Package APPLICATIONS Powerline Networking Home Phone Networking
TXEN RXEN TXCLK RXCLK
Broadband Modem Mixed-Signal Front End AD9975
FUNCTIONAL BLOCK DIAGRAM
AD9975
10 K 10 TX+ TxDAC+ TX–
CLK1 ADIO[9:0] CLK-GEN CLK2 OSCIN XTAL
10
ADC
PGA
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