The SSM2602 is a low power, high quality stereo audio codec for portable digital audio applications with stereo programmable gain amplifier (PGA) line and monaural microphone inputs. It features two 24-bit analog-to-digital converter (ADC) channels and two 24-bit digital-to-audio (DAC) converter channels. The SSM2602 can operate as a master or a slave. It offers various master clock frequencies, including 12 MHz or 24 MHz for USB devices; standard 256 fS rates, such as 12.288 MHz and 24.576 MHz; and many common audio-sampling rates, such as 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz, 32 kHz, 16 kHz, and 8 kHz. The SSM2602 can operate at power supplies as low as 1.8 V for the analog circuitry and 1.5 V for the digital circuitry. The maximum voltage supply is 3.6 V for all supplies. The SSM2602 software-programmable output options provide the user with many application options, such as speaker driver, headphone driver, or both. Its volume control functions provide a large range of gain control of the audio signal.