2:1 HDMI/DVI Switch with Equalization and DDC/CEC Buffers

The AD8192 is a complete HDMI™/DVI link switch featuring equalized TMDS inputs and pre-emphasized TMDS outputs ideal for systems with long cable runs. The TMDS outputs can be set to a high impedance state to reduce the power dissipation and/or allow the construction of larger arrays using the wire-OR technique. The AD8192 includes bidirectional buffering for the DDC bus and CEC line, with integrated pull-up resistors for the CEC line. The AD8192 is available in a space-saving, 56-lead LFCSP surface-mount, lead-free plastic package specified to operate over the −40°C to +85°C temperature range.

PRODUCT HIGHLIGHTS

* Fully HDMI 1.3a transmit and receive compliant.

* Supports data rates up to 2.25 Gbps, enabling greater than 1080p HDMI formats with deep color (12-bit) and UXGA (1600 × 1200) DVI resolutions.

* Input cable equalizer enables use of long cables; more than 20 m (24 AWG) at data rates up to 2.25 Gbps.

* Auxiliary switch isolates and buffers the DDC bus and the CEC line, improving total system capacitance limit.

* Hot plug detect (HPD) signal is pulsed low on link switch.

* Manually or automatically switched input terminations.

APPLICATIONS

* Front panel buffer for advanced television (HDTV) sets

* Standalone HDMI switcher

* Multiple input displays

* Projectors

* A/V receivers

* Set-top boxes

* Four TMDS channels per link:

Supports 250 Mbps - 2.25 Gbps data rates and beyond

Supports 25 MHz - 225 MHz pixel clocks and beyond

Fully buffered unidirectional inputs/outputs

Globally-switchable 50 Ω on-chip terminations

* Three auxiliary channels per link:

Buffered and switched DDC bus (SDA and SCL)

DDC bus logic level translation (3.3 V, 5 V)

Buffered CEC bus with integrated pull-up resistors (27 kΩ)

Hot plug detect pulse low on channel switch