YM3615B

The YM3615B (DVR) is an LSI developed by Yamaha for the control of digitak volume in digital audio applications.There are some functions of YM3615B as follows.First, log-linear digital volume functions can be created by simply supplying pulses to the UP and DOWN terminals.Secondly, input consists of MSB-first DAC signals to 1DAC and can ve connected to the step level of 96 or 98 steps per 1DAC cycle or up the level of four-times oversampling data.Besides, output can be directly connected to PCM56 of Burr-Brown.At last,its minimum levels-8 dB and log-linear characteristics are provided for 300 steps in 0.2 dB units over a range from -65.8 dB (the minimum level preceding the first step) to 0 dB.

What comes next is about the absolute maximum ratings of YM3615B.The VDD (power supply voltage) is from -0.3 V to +7.0 V.The Vi (input voltage) is from VSS-0.3 V to VDD+0.5 V.The Top (operating temperature) is from 0 to +70.The Tstg (storage temperature) is from -50 to +125.Then is about the recommended operating conditions.The minimum VDD (power supply voltage) is 4.75 V,the typical is 5.00 V and the maximum is 5.25 V.The minimum Top (operating temperature) is 0,the typical is 25 and the maximum is 70.

The following is about the electrical characteristics of YM3615B.The maximum fc (clock frequency) is 9.216 MHz for BCI input.The minimum VIL (low level input voltage) is 0 V and the maximum is 0.4 V.The minimum VIH (high level input voltage) is 2.4 V and the maximum is VDD V excluding M0,M1.The minimum VIH (high level input voltage) is 4.0 V and the maximum is VDD V for M0,M1.The minimum VOL (low level input voltage) is 0 V and the maximum is 0.4 V.The minimum VOH (high level input voltage) is 2.4 V and the maximum is VDD V.