Overview
The PCM1804DBR is a high-performance, single-chip stereo analog-to-digital converter (A/D converter) produced by Texas Instruments. It features a 24-bit delta-sigma modulator and is designed for mid- to high-grade consumer and professional audio applications. The device includes a linear phase antialias digital filter and a high-pass filter (HPF) to remove dc offset from the input signal. It operates with dual power supplies, 5 V for analog and 3.3 V for digital, and is available in a compact 28-pin SSOP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 Bits | |
| Sampling Rate | Up to 192 kHz | |
| Dynamic Range | 112 dB (Typical) | |
| Signal-to-Noise Ratio (SNR) | 111 dB (Typical) | |
| Total Harmonic Distortion + Noise (THD+N) | -102 dB (Typical) | |
| Analog Input Voltage | ±2.5 V (Differential) | |
| Operating Temperature Range | -10 to 70 °C | |
| Package Type | SSOP28 | |
| Power Supply | 5 V (Analog), 3.3 V (Digital) | |
| Power Dissipation | 225 mW |
Key Features
- 24-Bit Delta-Sigma Stereo A/D Converter
- 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
- Peak Detection and 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
Applications
- MD Players
- Digital VTRs
- Digital Mixers
- Digital Recorders
- AV Amplifiers
Q & A
- What is the resolution of the PCM1804DBR?
The PCM1804DBR has a resolution of 24 bits.
- What is the maximum sampling rate of the PCM1804DBR?
The maximum sampling rate is up to 192 kHz.
- What are the typical dynamic range and SNR of the PCM1804DBR?
The typical dynamic range is 112 dB, and the typical SNR is 111 dB.
- What is the typical THD+N of the PCM1804DBR?
The typical THD+N is -102 dB.
- What are the power supply requirements for the PCM1804DBR?
The device requires 5 V for the analog supply and 3.3 V for the digital supply.
- What is the operating temperature range of the PCM1804DBR?
The operating temperature range is -10 to 70 °C.
- What package type is the PCM1804DBR available in?
The PCM1804DBR is available in a 28-pin SSOP package.
- Does the PCM1804DBR support DSD output?
- What are the supported data formats for the PCM1804DBR?
The supported data formats include Left-Justified, I2S, Standard 24-Bit, and DSD.
- Can the PCM1804DBR operate in both master and slave modes?
