AD1892 is an AD company's digital audio receiver and asynchronous sample rate converter, supporting CP-1201, CP-340, IEC-958, AES/EBU, S/PDIF protocol, supporting 1:5 upsampling rate and 1:0.85 downsampling rate, with 120dB dynamic range, -113dB THD+N @ 1kHz, supports CRC calculation, supports four-wire SPI compatible serial control interface, supports mute input pin, supports power down mode, supports single +5V power supply, supports left-aligned, right-aligned and I2S-compatible mode of three-wire serial data interface, supports 28-lead SOIC package.
The AD1892 combines a CP‑1201, CP‑340, IEC‑958, AES/EBU, and S/PDIF compatible digital audio receiver with an asynchronous sample‑rate converter. It supports Q‑channel subcode and Channel Status information, and provides a four‑wire SPI compatible serial control port for microcontroller access. The device operates from a single +5 V supply and offers 120 dB dynamic range with –113 dB THD+N at 1 kHz.
The part is offered in a 28‑lead SOIC package and works over an industrial temperature range (‑40 °C to +85 °C). It includes hardware mute, power‑down/reset, and a SYNC input for synchronizing multiple devices. Detailed pin descriptions, timing diagrams, and electrical specifications are provided for system designers.
| Supply Voltage | +5.0 V |
|---|---|
| Input Word Width | 20 Bits |
| THD+N (1 kHz Full‑Scale Input) | -113 dB |
| Output Sample Frequency | 48.8 kHz |
| Operational Current | 50‑60 mA |
| Power‑Down Current | 3‑6 mA |
| Temperature Range (operating) | -40 °C to +85 °C |
The AD1892 operates from a single +5 V nominal supply.
Multiple AD1892s can be synchronized by connecting their SYNC input (Pin 23) to a common LEFT/RIGHT clock.
The AD1892 supports input audio word widths up to 20 bits.