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Audio & Video ICs

DSP with eala / eala Stereo Expander / FIR Filter

  • Software
  • NJRC original eala surround is offered to the stereo I/O product.
  • NJRC original “eala Rebirth” is sound enhancement for compression audio.
  • NJRC original “eala Stereo Expander” is wider stereo effect.
  • Stereo 128 tap FIR filter for NJRC Linear Phase Correction (LPC) Technology is easier correction of speaker characteristic.
  • 1’st order HPF for stereo input signal.
  • Simplified passive matrix 6 channels output.
  • Input Trim / Master Volume with smooth control.
  • Watch Dog Clock output.
  • Hardware
  • 24bit Fixed-point Digital Signal Processing
  • Maximum System Clock Frequency (38MHz Max)
  • Digital Audio Interface (3 Input ports / 3 Output ports)
  • Digital Audio Format (I2S 24bit, Left-justified, Right-justified, BCK : 32fs/64fs
  • Master / Slave Mode (Master Mode MCK : 1/2 fclk, 1/3 fclk ex. MCK = 384Fs(1/2) or MCK = 256Fs(1/3) at fclk=768Fs)
  • Power Supply (3.3V)
  • Input terminal (5V Input tolerant)
  • Package : SSOP32 (Pb-Free)
  • Micro computer interface (I2C bus (standard-mode/100kbps, fast-mode/400kbps): 4-Wire Serial Bus (4-wire: clock, enable, input data, output data))
General Description
The NJU26040-18A is a digital audio signal processor that provides the function eala / eala Rebirth or eala expand speaker + 128tap FIR filter. The NJU26040-18A processes a lot of sound sources, such as DVD, CD,AM/FM radio, and TV sound into spacious sound of natural surround by eala technology. Also even if there is a small speaker system, NJU26040-18A make rich sound with LPC technology. The applications of NJU26040-18A are suitable for stereo outputs products such as DVD Receivers, AV Amplifiers, TV, radio-cassettes player or ordinary audio products such as small speakers system.
The documents used to design audio DSP is here

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Package Information
Part Number Package OutlinePinsMaterial Declaration (RoHS/Halogen)Terminal FinishWeight(mg) (Reference)Reflow solderingFlow solderingIron solderingPacking ConditionMSLSolder Foot Print
32Sn2Bi185Yes-YesDry pack 12a
Sample & Buy
Part NumberPackagesStatusPacking SpecificationSample  Buy   

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