The SMIC18_CODEC_01 specifies the design of a high-performance 16-bit stereo Audio CODEC for portable digital audio systems. The ADCs and DACs within the specification use sigma-delta technique. Input/output analog signals of the SMIC18_CODEC_01 are single-ended, including stereo input and stereo output. Mono microphone input is also supported with an internal microphone bias circuit. The internal stereo headphone amplifier is capable of driving 16Ω load. Low power consumption and flexible power management allow selective shutdown of codec functions, thus extending battery life in portable applications.

Single-ended ADC --THD:-79dB --Dynamic Range, SNR:87dB  
Single-ended DAC --THD:-79dB --Dynamic Range, SNR:87dB  
Audio Serial Interface --16bit, 32bit word length --I2S mode/DSP mode --Slave/Master  
2-wire Serial Control Interface  
Master Clock is 256fs  
Sampling Rates --8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz and 48kHz  
Power Supply --1.8V Core Digital Supply typ. --3.3V Pad and Analog Supply typ. (2.4-3.6)  
Highly Efficient Linear Headphone Amplifier  
Stereo Line Input and Mono Microphone Input with Electret Bias  
Stereo/Mono Mode  
Flexible Power Management Under Total Software Control  
Internal PLL as the Audio Codec Master Clock Generator