AD1871 is a stereo audio ADC produced by Analog Devices. It supports 24 bits, 96 kHz, and has multi-bit Sigma-Delta modulators. It has a dynamic range of 105 dB, and supports 256/512 and 768 fS master clocks. The flexible serial data port allows right-justified, left-justified, I2S-compatible and DSP serial port modes. Cascading (up to four devices) from a single DSP SPORT device is supported, and device control is via SPI-compatible serial port or optional control pins.
The AD1871 is a stereo audio analog‑to‑digital converter designed for high‑performance digital audio applications such as mixing consoles, CD‑R/MD recorders, home theater and automotive audio systems. It features two 24‑bit conversion channels, programmable gain amplifiers, multibit sigma‑delta modulators and decimation filters, delivering up to 105 dB dynamic range.
The device operates from a single 5 V supply, is available in a 28‑lead SSOP package, and operates over a temperature range of –40 °C to +105 °C. It supports multiple serial data formats (I²S, left‑justified, right‑justified, DSP) and includes an SPI‑compatible control interface for configuration and status monitoring.
| Dynamic Range (A‑Weighted) | 105 dB (Typ) |
|---|---|
| Supported Sample Rate | Up to 96 kHz |
| Resolution | 24 Bits |
| Package | 28‑Lead SSOP |
| Operating Temperature Range | –40 °C to +105 °C |
The AD1871 provides a typical A‑weighted dynamic range of 105 dB.
It supports sample rates up to 96 kHz.
The device is supplied in a 28‑lead SSOP package.