The PCM2702 is a single chip digital-to-analog converter offering two D/A output channels and an integrated USB 1.0 compliant interface controller. The newly developed SpAct™ (Sampling Period Adaptive Controlled Tracking) system recovers a stable, low-jitter clock for internal PLL and DAC operation from the USB interface audio data.
●The PCM2702 is based upon Texas Instruments Enhanced Multi-level Delta-Sigma Modulator, an 8x oversampling digital interpolation filter, and an analog output low-pass filter.
●The PCM2702 can accept a 48kHz, 44.1kHz and 32kHz sampling rates, using either 16-bit stereo or monaural audio data. Digital attenuation and soft-mute features are included, and are controlled via USB audio class request.
● INTEGRATED USB INTERFACE:
● Full-Speed Transceiver Supports 12Mbps Data Transfer
● Fully Compliant with the USB 1.0 Specification
● Adaptive Mode for Isochronous Transfer
● Self-Powered Device
● ACCEPTS 16-BIT STEREO AND MONO USB AUDIO DATA STREAMS
● ANALOG PERFORMANCE (VCC = 5V):
● Dynamic Range: 100dB (typ at 16-bit)
● SNR: 105dB (typ)
● THD+N: 0.002% (typ at 16-bit)
● Full-Scale Output: 3.1VPP
● 8X OVERSAMPLING DIGITAL FILTER:
● Passband: 0.454fS
● Stopband: 0.546fS
● Passband Ripple: ±0.002dB
● Stopband Attenuation: \x9682dB
● SAMPLING RATE (FS): 32kHz, 44.1kHz, 48kHz
● ON-CHIP CLOCK GENERATOR WITH SINGLE 12MHz CLOCK SOURCE
● MULTI-FUNCTIONS:
● Digital Attenuator: 0dB to \x9664dB, 1dB/step
● Soft Mute
● Zero Flag
● Suspend Flag
● Playback Flag
● DUAL POWER SUPPLIES:
● +5V for Analog Portion
● +3.3V for Digital Portion
● PACKAGE: SSOP-28
● APPLICATIONS
● STAND-ALONE USB AUDIO SPEAKERS
● CRT/LCD INTEGRATED USB AUDIO SPEAKERS
● USB AUDIO AMPLIFIERS
● OTHER USB AUDIO APPLICATIONS
●Patents Pending.
●SpAct is a trademark of Texas Instruments.
●All trademarks are the property of their respective owners.
