The CS44600 and CS44800 pin-compatible Class-D digital audio amplifier controllers provide a simple, small and cost-effective solution for DVD receivers, home theater recorders and entry-level audio/video recorders and home-theater-in-a-box systems.
These multichannel digital-to-PWM (pulse width modulation) audio system controllers include interpolation, sample-rate conversion and half- and full-bridge PWM driver outputs. The architecture uses a direct-to-digital approach that maintains digital signal integrity to the final output filter, minimizing the effects of analog interference that negatively affect system performance.
The 6-channel CS44600 and the 8-channel CS44800 offer technology enhancements that allow system designers to lower costs while improving audio quality. These products integrate on-chip digital volume control, peak detect with limiter and seven general-purpose I/Os that allow an easy interface to many power stages. The PWM amplifier can achieve 90 percent efficiency or more, allowing the design of smaller device packages, fewer heat-sink requirements and smaller power supplies.
In addition, each chip incorporates Cirrus Logic's patented power-supply noise rejection technology, which compensates for the inherent power-supply noise that can hurt audio quality; as a result, a system designer may purchase lower-cost power supplies, reducing bill-of-material (BOM) costs. The power-supply noise rejection technology also enables single-ended outputs, further reducing component count.
The integrated sample-rate converter minimizes the effects of clock jitter, thus enabling better audio quality with a system dynamic range of greater than 100 dB. These amplifiers also feature Cirrus Logic’s patented Popguard technology, which helps eliminate power-cycling clicks and pops.
Engineered for performance, the CS44600 and CS44800 deliver professional audio quality at breakthrough price points for applications such as audio/video receivers, home theater recorders, DVD recorders, digital TVs, set-top boxes, automotive entertainment systems, professional audio products and musical instruments.
| Part | Resolution (bits) | Dynamic Range (dB) | THD+N (%) | Max Sample Rate (kHz) | Power Supply (V) | Comments |  Package |
|---|---|---|---|---|---|---|---|
| CS44600 | 24 | 100 | <0.05 % | 192 | VD = 2.5 V; VL = 3.3 to 5 |
6-Channel digital amplifier controller | 64 LQFP |
| CS44800 | 24 | 100 | <0.05 % | 192 | VD = 2.5 V; VL = 3.3 to 5 |
8-Channel digital amplifier controller | 64 LQFP |
| CS44600/800 | Not Recommended for New Designs | ||||||
x
