Broadband Modem Mixed-Signal Front End AD9867
FEATURES
Low cost, 3.
3 V
CMOS MxFE® for broadband modems 10-bit digital-to-analog converter (DAC) 2×/4× interpolation filter 250 MSPS DAC update rate 10-bit, 75 MSPS ADC Low noise RxPGA Dual channel muxed input 6 dB input overload attenuator −12 dB to +48 dB (without attenuator) Third-order programmable low-pass filter Flexible digital datapath interface Half-duplex and full-duplex operation Programmable delay Tx driver disable signal Various power-down/reduction modes Internal clock multiplier (PLL) 2 auxiliary programmable clock outputs 64-lead LFCSP
FUNCTIONAL BLOCK DIAGRAM
OSCIN XTAL CLKOUT1 CLKOUT2
AD9867
PWR_DWN TXEN/TXSYNC TXCLK/TXQUIET ...