GENERAL DESCRIPTION

The AD9868 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 AD9865, the AD9868 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

10-bit DAC converter

  2×/4× interpolation filter

  200 MSPS DAC update rate

Integrated 17 dBm line driver with 19.5 dB gain control

10-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 AD9865

  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