具有差动输入的汽车类 112dB SNR 立体声 ADC
| Number of ADC channels | 2 |
| Analog inputs | 2 |
| Digital audio interface | DSP, I2S, L, R |
| Control interface | H/W |
| Sampling rate (Max) (kHz) | 192 |
| ADC SNR (Typ) (dB) | 112 |
| Rating | Automotive |
| | |
- Qualified for Automotive Applications
- AEC-Q100 Test Guidance With the Following Results:
- Device Temperature Grade 3: –40°C to 85°C
Ambient Operating Temperature Range - Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C3B
- Device Temperature Grade 3: –40°C to 85°C
- 24-Bit Delta-Sigma Stereo A/D Converter
- High Performance:
- Dynamic Range: 112 dB (Typical)
- SNR: 111 dB (Typical)
- THD+N: –102 dB (Typical)
- High-Performance Linear Phase Antialias Digital Filter:
- Pass-Band Ripple: ±0.005 dB
- Stop-Band Attenuation: –100 dB
- Fully Differential Analog Input: ±2.5 V
- Audio Interface: Master- or Slave-Mode Selectable
- Data Formats: Left-Justified, I2S, Standard 24-Bit, and DSD
- Function:
- Peak Detection
- High-Pass Filter (HPF): –3 dB at 1 Hz,
fS?=?48?kHz
- Sampling Rate up to 192 kHz
- System Clock: 128 fS, 256 fS, 384 fS,
512 fS, or 768 fS - Dual Power Supplies:
- 5 V for Analog
- 3.3 V for Digital
- Power Dissipation: 225 mW
- Small 28-Pin SSOP
- DSD Output: 1 Bit, 64 fS
The PCM1804-Q1 device is a high-performance, single-chip stereo A/D converter with fully differential analog voltage input which uses a precision delta-sigma modulator and includes a linear-phase antialias digital filter and high-pass filter (HPF) that removes DC offset from the input signal. The PCM1804-Q1 device is suitable for a wide variety of mid- to high-grade consumer and professional applications, where excellent performance and 5-V analog supply and 3.3-V digital power-supply operation are required. The PCM1804-Q1 device can achieve both PCM audio and DSD format due to the precision delta-sigma modulator. The PCM1804-Q1 device is fabricated using an advanced CMOS process and is available in a small 28-pin SSOP package.
