描述 Description

The UTC UPA2008 is a third generation 5-V class-D amplifierwhich provides precise DC volume?control, lower supply current, lower noise floor, higher efficiency, smaller packaging, and fewer external components. Designed using a new filter-free class-D modulation technique, the UTC?UPA2008?is capable of directly driving the speakers, without needing a low-pass output filter consisting of two inductors and three capacitors per channel.Eliminating this output filter saves approximately 30% in system cost and 75% in PCB area. The UTC UPA2008?improves the chip-level shutdown control, 1μA total supply current making the device ideal for battery-powered applications. It also protects the chip from being destroyed by over temperature and short current failure. To save battery power for more essential devices when battery voltage drops to low levels, undervoltage shutdown is designed in the UTC UPA2008. In applications, class-D amplifier for LCD projectors, LCD monitors, powered speakers, the UTC UPA2008 is also suitable for battery operated and space constrained systems.

特性 Features

? 3W per channel into 3? speakers (THD+N=10%)
? Filter free modulation scheme operates without a large and expensive LC output filter
? Extremely efficient third generation 5V Class-D technology
? -Low shutdown control, 1μA
? -Maximum efficiency into 3?, 78%
? -PSRR, -70dB
? Operating temperature range, -40°C~85°C