YM7128B

The YM7128B is designed as an LSI which has quality digital surround sound capabilities realized by yamaha's digital audio technology. The LSI has built-in AD and DA converters which enable digital surround sound processing for analog input/output. Its eight digital delay lines may provide delay time of up to 100ms for each and digital adding up of delay line signals for two-channel output assures a wide range of application.

YM7128B has seven features. (1)The built-RAM realizes digital delay time 100ms at maximum. (2)Feedback loop can be constructed for reverberation. (3)Various surround effect can be obtained by controlling this LSI with serial data from microprocessor. (4)Digital attenuator is built in for surround sound volume control. (5)Sampling frequency is 23.6kHz and 14 bit floating AD converter is built-in. (6)Two-times oversampling digital filter and 14 bit floating DA converter are built-in. (7)16 pin DIP, 24 pin SOP package silicon gate CMOS 5V power supply. Those are all the main features.

Some absolute maximum ratings of YM7128B have been concluded into several points as follow. (1)Its supply voltage would be from -0.3V to 7.0V. (2)Its operating temperature range would be from -20°C to 85°C. (3)Its storage temperature range would be from -50°C to 125°C. YM7128B should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics are concluded as follow. (1)Its supply current would be max 50mA. (2)Its high level input voltage would be min 2.0V. (3)Its low level input voltage would be max 0.8V. (4)Its high level output voltage would be min 4.0V. (5)Its low level output voltage would be max 0.4V. (6)Its input leakage current would be min -10uA and max 10uA. (7)Its input capacitance would be typ 5.0pF and max 12pF. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!