The NJW1104 is a surround processor including all of the necessary circuits of Dolby Pro Logic Surround decoder and digital delay. In addition to Dolby Pro Logic Surround function, it performs easily other surround function such as Hall, Live, Disco and others.
The NJW1104 is a Dolby Pro Logic Surround decoder that also supports other surround modes such as Hall, Live and Disco. It integrates all necessary circuits for Dolby Pro Logic processing and includes a digital delay function.
Key specifications include operating voltages of Vec = 10 V (analog) and Vop = 5 V (digital), supply voltage ranges of Vec 9‑13 V and Vop 4.5‑5.5 V, THD values around 0.05‑0.2 dB, and selectable digital time‑delay settings from 12 ms to 64 ms. The device is offered in QFP80 and QFP100 packages with detailed pin‑out tables.
| Operating Voltage | Vec=10V (Analog), Vop=5V (Digital) |
|---|---|
| Supply Voltage Range (Vec) | 9 V – 13 V |
| Supply Voltage Range (Vop) | 4.5 V – 5.5 V |
| Total Harmonic Distortion (THD) | 0.05 % – 0.2 % (Vin=0 dBd, f=1 kHz) |
| Signal‑to‑Noise Ratio | 75 dB – 80 dB (Rg=0, weighted CCIR/ARM) |
| Digital Time Delay Range | 12.4 ms – 64.4 ms (fosc=4 MHz) |
| Package Types | QFP100‑C2 and QFP80‑C2 |
The device operates with an analog voltage of 10 V (Vec) and a digital voltage of 5 V (Vop).
In addition to Dolby Pro Logic Surround, it supports other surround functions such as Hall, Live, and Disco.
The chip is offered in QFP100‑C2 and QFP80‑C2 packages.