EL9112

Features:

• 150MHz -3dB bandwidth
• CAT-5 compensation
- 50MHz @ 1000 ft
- 125MHz @ 500 ft
• 108mA supply current
• Differential input range 3.2V
• Common mode input range -4V to +3.5V
• ±5V supply
• Output to within 1.5V of supplies
• Available in 28-pin QFN package
• Pb-free available (RoHS compliant)




Application

• Twisted-pair receiving/equalizer
• KVM (Keyboard/Video/Mouse)
• VGA over twisted-pair
• Security video




Specifications

Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . .12V
Maximum Continuous Output Current per Channel. . . . . . . . . 30mA
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Pin Voltages. . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V to VS+ +0.5V
Storage Temperature . . . . . . . . . . . . . . . . . . . . ..-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . .-40°C to +85°C
Die Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.




Description

The EL9111 and EL9112 are triple channel differential receivers and equalizers. They contains three high speed differential receivers with five programmable poles. The outputs of these pole blocks are then summed into an output buffer. The equalization length is set with the voltage on a single pin. Using the Enable pin on the EL9111 and EL9112, the outputs can be placed into a high impedance state enabling multiple devices to be connected in parallel and used in a multiplexing application. The gain can be adjusted up or down on each channel by 6dB using its VGAIN control signal. In addition, a further 6dB of gain can be switched in to provide a matched drive into a cable. The EL9111 and EL9112 have a bandwidth of 150MHz and consume just 108mA on 5V supply. A single input voltage is used to set the compensation levels for the required length of cable. The EL9111 is a special version of the EL9112 that decodes syncs encoded onto the common modes of three pairs of CAT-5 cable by the EL4543. (Refer to the EL4543 datasheet for details.) The EL9111 and EL9112 are available in a 28 Ld QFN package and are specified for operation over the full -40C to +85C temperature range.