●The PCM3052A is a low-cost, single-chip, 24-bit stereo audio codec (ADC and DAC) with single-ended analog voltage input and output. It also has an analog front end consisting of a 34-dB microphone amplifier, microphone bias generator, 2 stereo multiplexers, and a wide-range PGA. Analog- to-digital converters (ADCs) employ delta-sigma modulation with 64-times oversampling. On the other hand, digital-to-analog converters (DACs) employ modulation with 64- and 128-times oversampling. ADCs include a digital decimation filter with a high-pass filter, and DACs include an 8-times oversampling digital interpolation filter. The PCM3052A has many functions which are controlled using the I2C interface: DAC digital de-emphasis, digital attenuation, soft mute etc. The PCM3052A also has an S/PDIF output pin for the DAC digital input. The power-down mode, which works on ADCs and DACs simultaneously, is provided by an external pin. The PCM3052A is suitable for a wide variety of cost-sensitive PC audio (recorder and player) applications where good performance is required. The PCM3052A is fabricated using a highly advanced CMOS process and is available in a small 32-pin VQFN package.
● Microphone Amplifier and Bias
● Monaural Microphone Amplifier: 34-dB Gain at Differential Input
● Microphone Bias: 1 mA at 3.75 V
● Multiplexer and PGA
● Multiplex of Stereo Single-Ended Line Inputs and Monaural Microphone Amplifier
● 0.1 Vrms to 1.5 Vrms Full-Scale Input Range
● 22-k Input Resistance at 0.1-Vrms Input
● 20 dB to -4 dB/range, 1 dB/step PGA
● Reference Output: ±10 mA at 2.5 V
● 24-Bit Delta-Sigma ADC and DAC
● Stereo ADC:
● Full-Scale Input: 3 Vp-p
● Antialiasing Filter Included
● 1/64 Decimation Filter: Pass-Band Ripple: ±0.05 dB Stop-Band Attenuation: -65 dB
● On-Chip High-Pass Filter: 0.91 Hz at fS = 48 kHz
● High Performance: THD+N: -94 dB (Typical) SNR: 101 dB (Typical) Dynamic Range: 101 dB (Typical)
● Stereo DAC:
● Single-Ended Voltage Output: 4 Vp-p
● Analog Low-Pass Filter Included
● ×8 Oversampling Digital Filter: Pass-Band Ripple: ±0.03 dB Stop-Band Attenuation: -50 dB
● High Performance: THD+N: -97 dB (Typical) SNR: 105 dB (Typical Dynamic Range: 104 dB (Typical)
● S/PDIF Output for DAC Digital Input
● Multiple Functions With I2C Interface:
● Digital De-Emphasis: 32-, 44.1-, 48-kHz
● Zipper-Noise-Free Digital Attenuation and Soft Mute for DAC
● HPF Bypass Control for ADC
● S/PDIF Output Control
● Power Down: ADC/DAC Independently
● External Power-Down Pin:
● ADC/DAC Simultaneously
● Audio Data Format: 24-Bit I2S Only
● Sampling Rate:
● 16-96 kHz for Both ADC and DAC
● System Clock: 256 fS Only
● Dual Power Supplies:
● 5 V for Analog and 3.3 V for Digital
● Package: VQFN-32
●System Two, Audio Precision are trademarks of Audio Precision, Inc.
●All trademarks are the property of their respective owners.
