Stereo Digital Volume Control
The CS3310 is a complete stereo digital volume control designed specifically for audio systems. It features a 16-bit serial interface that controls two independent, low-distortion audio channels. The CS3310 includes an array of well-matched resistors and a low-noise active output stage that is capable of driving a 600 Ω load. A total adjustable range of 127 dB, in 0.5 dB steps, is achieved through 95.5 dB of attenuation and 31.5 dB of gain. The simple 3-wire interface provides daisy-chaining of multiple CS3310s for multichannel audio systems. The device operates from ±5 V supplies and has an input/output voltage range of ±3.75 V.
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Technology
Features
- Complete digital volume control
- Two independent channels
- Serial control
- 0.5 dB step size
- Wide adjustable range
- -95.5 dB attenuation
- +31.5 dB gain
- Low distortion and noise
- -100 THD+N
- 116 dB dynamic range
- Noise-free level transitions
- Channel-to-channel crosstalk better than 110 dB
- Package: 16-pin plastic SOIC; lead-free assembly
Parametric Specifications
| Channels | 2 |
| Dynamic Range (dB) | 116 |
| Gain (dB) | 31.5 |
| THD+N (dB) | 0.001% |
| Analog Power Supply (V) | +/-5 |
| Digital Power Supply (V) | 5 |
| Supply Current (mA) | 7 (Analog typ); 0.45 (Digital typ) |
| Package | 16 SOIC |
