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A World of Analog / Mixed-Signal Solutions
FLASH NEWS #3-2004

CHIPIDEA's Compact Voice Codec is Validated in Chartered 0.18um CMOS Process
CI7226aa is a compact full duplex codec for Voice applications occupying only 1.2sqmm in a 0.18 um mainstream Logic process with no analog options. Besides its compactness, CI7226aa also presents very competitive current consumption below 2.5mA.
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Main Features
• Dual supply operation: 3.3 V ± 10% analog and 1.8 V ± 10% digital
• 16 bit linear ADC and DAC
• Dynamic Range in excess of 80 dB
• Directly drives 8/32 Ohm Speakers
• -85 dB THD for 32 Ohm loads
• -70 dB THD for 8 Ohm loads
• Single Ended and Differential speaker drivers
• Single Ended and Differential microphone inputs
• Receive volume control with 3 dB resolution and 30 dB range
• Transmit volume control with 3 dB resolution and 42 dB range
• G712 Digital Channel Filters
• 13 MHz input clock
• 8 kHz sampling mode
• Multiple Power Down Modes
• Loop-back test modes
Silicon Results indicate that CHIPIDEA's compact Voice Codec CI7226aa provides excellent Voice Signal Quality, with Dynamic Range exceeding 80dB and THD below -85dB for 10k Ohm loads, and better than -70dB for 8 Ohm (@100mW output power) and 32 Ohm loads.




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