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Class-D amplifiers target portable applications

Posted: 27 Jun 2007 ?? ?Print Version ?Bookmark and Share

Keywords:mono Class-D amplifier? GPS? mobile designs?

PT2333 from PTC

Princeton Technology Corp. has launched its first 2.5W mono Class-D amplifier, the PT2333, specifically designed for mobile phones, GPS PNDs and portable media players (PMPs).

Compared with traditional Class-AB amplifiers, which have been plagued by overheating problems, PT2333 is capable of much higher efficiency (> 85 percent) and consequently generates much less heat. The PT2333 amplifier is based on an advanced CMOS process and uses Class-D circuitry designed by PTC to achieve its high efficiency performance. PT2333 produces a maximum output power of up to 2.5W (VDD = 5V, RL = 4, THD = 10 percent) and will work reliably without a heat sink.

PT2333 is fully compatible with the TPA2010. To support customers with limited PCB space, a simplified output filter stage may be used. PT2333 is offered in a choice of small form-factor packaging (9-pin CSP for mobile phones and 10-pin MSOP for GPS PND, PMP and PDA applications) which can meet stringent mechanical requirements typical for mobile designs.

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