GENERAL DESCRIPTION

The AD9869 is a mixed-signal front-end (MxFE®) IC for transceiver applications requiring Tx path and Rx path functionality with data rates up to 80 MSPS. A lower cost, pin compatible version of the AD9866, the AD9869 removes the current amplifier (IAMP) IOUTP functionality and limits the PLL VCO operating range of 80 MHz to 200 MHz.

FEATURES

Low cost 3.3 V CMOS MxFE for broadband modems

12-bit DAC converter

  2×/4× interpolation filter

  200 MSPS DAC update rate

Integrated 17 dBm line driver with 19.5 dB gain control

12-bit, 80 MSPS, ADC converter

−12 dB to +48 dB low noise RxPGA (<3 nV/√Hz)

Third-order, programmable low-pass filter

Flexible digital data path interface

   Half- and full-duplex operation

   Pin compatible with the AD9866

   Various power-down/reduction modes

Internal clock multiplier (PLL)

2 auxiliary programmable clock outputs

Available in a 64-lead LFCSP_VQ

APPLICATIONS

Broadband wireline networking