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A World of Analog / Mixed-Signal Solutions
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CHIPIDEA 20-Bit Silicon-Proven Stereo Audio DAC Solution (CI8281wg)
Square Silicon Test Results
The Silicon test results show an excellent Overall Audio Quality.
The Dynamic Range is in the range of 96dB while the linearity (THD) exceeds the -100dB level.
It has an unbeatable current consumption (5.3mA total) and extremely efficient active area (3.1 mm2).

Graph

Active Area=3.1mm2
Square Functional Diagram
Functional Diagram
 CHIPIDEA develops and supplies cost-effective blocks for voice and audio signal processing fully compliant with commonly accepted standards.
CHIPIDEA’s competitive strength is based on extremely area effciency, very low power operation with solutions as compact as 1mm2 for a Dynamic Range of 80dB. Application areas cover Digital still/movie cameras, Medium-end MP3 Record/Playback.

CI8281wg is an extremely compact and very low power Stereo Audio DAC that delivers High fidelity Audio Quality.

It is comprised of a multibit sigma-delta modulator with dither, continuous time analog filters and analog output drive circuitry.

Main Features
• Designed in Tower 0.18µm CMOS can be customized into any required technologies
• 3.3V ± 10% analog and 1.8V ± 10% digital dual supply operation
• 20 bit D/A Conversion
• 93 dB Dynamic Range
• Differential outputs
• Complete Single-Chip Stereo DAC System
• 64X Interpolation Filter
• Delta-Sigma Multibit DAC
• Analog Post Filter
• Low Clock Jitter Sensitivity
• Linear Phase Filtering
• Zero Phase Error Between Channels
• Serial Input Interface
• 32, 44.1 and 48 kHz Input Sample Rates
• Optional Dither addition
• Test mode with internal stimulus generator
Square CI8281wg Test Chip
CI8281wg Test Chip

For further information: www.chipidea.com
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