MAX3814CHJ+T (MAXIM INTEGRATED PRODUCTS)

The MAX3814CHJ+T is a DVI/HDMI TMDS FR-4 and cable equalizer/driver in 32 pin TQFP package. The MAX3814 TMDS EQ/driver IC compensates for FR-4 and cable losses up to the DVI/HDMI transmit connector and provides a fully compliant DVI/HDMI TMDS output. It is used in DVI/HDMI cable applications to extend reach and improve jitter margin of cable channels at the receive-side connector. The on-chip TMDS driver operates at a standard current level for implementing a typical DVI/HDMI non back terminated transmitter as well as a 50% higher current mode for using a 200 ohm back termination resistor (non matching) to achieve a 10dB return loss. Typical DVI/HDMI output drivers contribute to reflection problems between the connector and a typical high impedance (open) DVI/HDMI Tx output. The selectable output current (LEVEL pin) gives the option of partial back termination to mitigate the reflection problem effectively while keeping common-mode offset to a minimum.