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Codec IC

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  • Price

    Price on request   ≥1piece

  • Model Number

    CJC8990

  • Data Sheet

  • Package

    Original packaging

  • Specs

    CJC8990

  • Quantity

    - +

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Product Description

The CJC8990 is a low power, high quality stereo CODEC designed for portable digital audio applications.
The device integrates complete interfaces to ONE stereo headphone or line out ports. External component requirements are drastically reduced as no separate headphone amplifiers are required. Advanced on-chip digital signal processing performs graphic equaliser, 3-D sound enhancement and automatic level control for the microphone or line input.

The CJC8990 can operate as a master or a slave, with various master clock frequencies including 12 or 24MHz for USB devices, or standard 256fs rates like 12.288MHz and 24.576MHz. Different audio sample rates such as 96KHz, 48KHz, 44.1KHz are generated directly from the master clock without the need for an external PLL.
The CJC8990 operates at supply voltages down to 1.8V, although the digital core can operate at voltages down to 1.5V to save power, and the maximum for all supplies is 3.3Volts. Different sections of the chip can also be powered down under software control. The CJC8990 is supplied in a very small and thin 4x4mm COL package, ideal for use in hand-held and portable systems.

FEATURES：
DAC SNR 91dB (‘A’ weighted), THD –81.2dB at 48KHz, 1.8V
ADC SNR 92.7dB (‘A’ weighted), THD -82dB at 48KHz, 1.8V
Programmable ALC / Noise Gate
2x On-chip Headphone Drivers
-THD –74.5dB , SNR 91dB with 16Ω load Hz, 1.8V
Digital Graphic Equaliser
Low Power
-7mW stereo playback (1.8V supplies)
-13mW record and playback (1.8V supplies)
Low Supply Voltages
-Analogue 1.8V to 3.3V
-Digital core: 1.5V to 3.3V
-Digital I/O: 1.8V to 3.3V
256fs / 384fs or USB master clock rates: 12MHz, 24MHz
Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48,
88.2, 96KHz generated internally from master clock
4x4mm COL package


APPLICATIONS：
Portable Multimedia players
Multimedia handsets
Handheld gaming