Gehäuseinformationen
| Gehäuse | Pins VQFNP (RTF) | 32 |
| Betriebstemperaturbereich (°C) -40 to 85 |
| Gehäusemenge | Träger 250 | JEDEC TRAY (10+1) |
Merkmale von PCM3052A
- 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
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Beschreibung von PCM3052A
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.