Redriver chip boosts USB 2.0 signal integrity

October 12, 2015 // By Graham Prophet
Texas Instruments presents this IC as the first stand-alone USB 2.0 redriver, improving signal integrity in automotive applications; the high-speed redriver easily enables designers to reduce the size, cost and power consumption of automotive infotainment systems

The high-speed, bidirectional TUSB211 redriver is AEC-Q100-qualified and designed to improve USB signal integrity in automotive infotainment systems. It offers more than 40% lower power consumption than existing hub solutions; a small footprint with first-of-its-kind pinout to reduce overall solution size; and built-in calibration features to accelerate system evaluation and optimisation. These features enable designers to significantly reduce the size, cost and power consumption of automotive infotainment systems that offer navigation, mobile docking and other multimedia features.

The TUSB211 redriver offers;

- Simplified evaluation: Unlike existing hub solutions, with the TUSB211, there are no continuity breaks on the printed circuit board (PCB). This allows flow-through of the existing signal and eliminates the need to break the traces when adding the redriver to the PCB.

- Ultra-low power consumption: The TUSB211 consumes less than 55 mW in active mode – 40% lower power consumption than existing hub solutions – without compromising speed. It supports USB data rates up to 480 Mbps.

- Small footprint: The redriver comes in a 1.6 x 1.6-mm, 12-pin super-thin quad flat no-lead (X2QFN) package, offering a 60% smaller package size than the industry-standard package and removing the need for a large hub.

- Fully compliant to USB standards: The TUSB211 is compatible with USB1.0/1.1, USB 2.0, USB On-the-Go (OTG) and Battery Charging (BC) 1.2 protocols. The bidirectional capability of the device dynamically improves signal quality in both directions regardless of which device is host or peripheral.

An evaluation module (EVM), the TUSB211RPTREVM, includes TI's LP5907 single-channel LDO, is $199 . Engineers can jump-start their designs with the USB 2.0, USB 3.0 re-driver dongle TI Designs reference design.

The TUSB211 is available today for $1.55 (1,000) and the automotive-qualified TUSB211-Q1 is available for $1.83 (1000). There is an Analog Wire blog post on USB 2.0 signal conditioning and a white paper, " Active USB cable for automotive applications "

TI; http://www.ti.com/tusb211-pr