(Hong Kong)
Product Summary
The AK7712AVT is a DSP(Digital Signal Processor) with built-in high performance 20bit 2ch ADC and 4ch DAC, on purpose to control the sound field. The AK7712AVT is possible to calculate 383 steps on 44.1kHz and 48kHz sampling respectively. In case of 32kHz sampling, the AK7712AVT can caluculate up to 511 steps. With a combination of this LSI and external memory for delay data,it can berealized easily to control the sound field such as Echo, Surround Presence Controller, and Key-control which are needed forsomething like Karaoke. Parametric Equalizing can be done without external memory.
Parametrics
AK7712AVT absolute maximum ratings: (1)DC Power supply: analog power: -0.3 to 6.0V, digital power(DVDD): -0.3 to (VB)+0.3V, substrate power(AVB,DVB): -0.3 to 6.0V; (2)Input current (except power supply)IIN: ±10 mA; (3)Analog input voltage: -0.3 to (VA)+0.3 V; (4)Digital input voltage VIND: -0.3 to (VB)+0.3 V; (5)Ambient temperature Ta: -40 to 85 °C; (6)Storage temperature Tstg: -65 to 150 °C.
Features
AK7712AVT features: (1)Word length: 24-bit (data RAM); (2)Instruction cycle time: 54ns(maximum speed); (3)Multiplier: 24 * 16 :40-bit; (4)Divider: 16 / 16 : 16-bit; (5)Program RAM: 384 × 32 bit; (6)External memory: DRAM,Pseudo-SRAM and SRAM can be connected (only use for delay data); (7)Sampling frequency: 32kHz to 48kHz.
Diagrams
