Sound bytes

The variability in the set of desirable audio-converter traits is discussed. The WM9713L from Wolfson Microelectronics integrates dual codecs with a touchpanel interface for PDA, smart phones, and handheld computers. A high-fidelity stereo codec provides dual microphone preamplifiers, a signal-source selector, an ADC, an automatic level control, tone control, a DAC, output amplifiers and a compatible interface. The TSC2101 also integrates an audio codec with speaker and headphone amplifiers and a four-wire touchscreen controller for PDA, smart phones, and MP3 players. It is found that the digital-audio converters for home-entertainment equipment demand high levels of integration.