DESCRIPTION:



Mini Size DAC Only 6.4cm X 2.5cm

PCM2704 USB decoder chip the line Main chip HIFI BB company grade fever, and its performance is superior to the most commonly used low-end chip market CM102S series power using the USB interface on the power supply, the output is directly connected to the headset. Digital output section shaping circuit and digital coupling isolation transformer, to provide high quality SPDIF digital signal for more advanced DAC decoder, because it is an external sound card, thereby bypassing a serious interference of electromagnetic waves in the chassis, so the sound quality will be purified U.S. CD quality, high signal-to-noise ratio can be deceased mother.

PCM2704 is a single-chip digital-to-analog converter chip. It has two digital-to-analog converter output channels and an integrated USB interface controller. The interface complies with USB1.0 standard. It uses newly developed SPActTM (sampling period adaptive control tracking) system. That the system can be separated from the audio data of the USB interface of a stable, small variation of the clock signal to coordinate the PLL and DAC work.

The PCM2704 mainly consists of three parts: a Burr-Brown developed an enhanced multi-level d-s modulator, a repeated 8 × oversampling digital interpolation filter, there is an analog output of the low pass filter.

PCM2704 can receive 48KHz, 44KHz and 32KHz sampling rate 16-bit stereo or mono audio data, the chip integrates the digital potentiometer software mute function, by USB audio level requirements can control potentiometer and mute functions.

PCM2704 USB DAC technical specifications of the finished board:

USB Interface: compatible with USB 1.0, Plug and Play, Windows2000, WIN7, MAC for the operating system.
USB-powered: no power, direct computer access to electricity, easy to use
Analog Output: gold-plated interface 3.5MM headphone jack stereo output, built-in amp, 3.5 headphone output ,can be connected directly to the decoder
Sampling rate: 16Bit 32K 44.1K 48k
Signal-to-noise ratio: 105db THD + N: 0.002%
Dynamic Range: 100db
Gift USB cable











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