PCM1863DBT

The PCM1863DBT is a Texas Instruments 24‑bit stereo analog-to-digital converter (ADC) aimed at high‑quality audio capture. It converts two analog input channels (line/mic-capable) into digital PCM data with a sigma-delta architecture, supporting high sampling rates (up to 192 kHz) and low noise. It includes programmable gain for each channel, a driver for differential inputs, and a digital interface (I2S/left-justified) with master/slave modes and flexible word formats. It’s commonly used in audio front-ends, USB/audio interfaces, portable recorders, and conferencing devices. The “DBT” suffix denotes a specific package/variant of the part (lead-free/board-assembly variant); refer to TI’s datasheet for exact package pinout and electrical specs.

Direct TI equivalents: PCM1860, PCM1862, and PCM1864 (same PCM186x family with 24-bit stereo ADC and I2S).
Non-TI substitutes with similar function: Cirrus Logic CS534x family; Cirrus WM8731/WM8960; AKM AK435x series; Analog Devices AD193x family. Note: pinout and interface vary; check data sheets for compatibility.

Here are the typical features of the PCM1863DBT (TI stereo ADC):
- 2-channel, 24-bit ADC
- Up to 192 kHz sampling rate
- Differential analog inputs with programmable gain
- Flexible digital interface: I2S, left-justified, right-justified
- Word lengths selectable from 16 to 24 bits
- Supports master/slave clocking and multiple data formats
- Internal reference and clocking options (with external clock input)
- Low-power operation with standby/power-down modes
- Suitable for high-quality audio front-ends and portable devices
- Package: DBT variant (compact TI package)
Note: Always verify exact specs (gain ranges, SNR/DR, supply voltages, and pinout) from the official datasheet for your design.

- Pin count: 28 pins (DBT package).
- Function: PCM1863DBT is a 2-channel, 24-bit stereo analog-to-digital converter with an I2S/PCM serial digital interface. It provides differential analog inputs (AINL/AINR), clock and data timing pins (MCLK/BCLK/LRCLK), and a digital data output (DOUT), plus separate analog/digital power pins and reset.

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing integrated circuits used in a wide range of electronics.

PCM1863DBT is a 24‑bit stereo ADC with mic/line inputs and I2S output, designed for low power, compact front‑ends. Typical applications include:
- USB/audio interfaces and portable recorders
- Sound bars, AV receivers, TVs and set‑top boxes
- Conferencing systems, VoIP endpoints, telepresence
- Voice‑enabled assistants and smart speakers
- Embedded audio capture in laptops, tablets, and development boards
- Instrument front‑ends and acoustic measurement/monitoring devices

PCM1863DBT uses a 28-pin QFN (5x5 mm) package.