YM3434

YM3434 is a kind of 2 channel 8 times oversampling digital filter. There are some features of YM3434 as follows.First, it operates at system clock independent from input serial clock.Secondly, input signals can be handled at any of the following input bit clock rates without adding any circuit: 32Fs, 48Fs, 64Fs, 80Fs, 96Fs, 112Fs, 128Fs, 144Fs, 160Fs, 176Fs and 192Fs.Then is capable to cope with sampling frequencies 32 KHz, 44.1 KHz and 48 KHz.Next is built-in overflow limiter.The fifth is output data switchable between 16 bit and 18 bit (directly connectable to BB Corporation's PCM56 and PCM58).The sixth is switchable between 1 DAC (4 times) and 2 DAC (8 times).The seventh one is built-in 19*18 bit multiplier, floating point calculation with a coefficient of 18 bits.The last one is C-MOS process, single 5 V power supply, 16-pin DIP package. 

What comes next is about the absolute maximum ratings of YM3434.The VDD (power supply voltage) is from -0.3 V to +7.0 V.The VI (input voltage) is from -0.3 to Vdd+0.5 V.The Top (operating ambient temperature) is from -20 to +75.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 typicall is 5.0 V and the maximum is 5.25 V.The minimum Top (operating temperature) is 0 and the maximum is 70.The minimum XIN (clock frequency) is 12.2 MHz and the maximum is 20.0 MHz.

The following is about the DC characteristics (Ta=25,VDD=5±0.25 V) of YM3434.The typical power dissipation is 150 mW and the maximum is 240 mW at XIN=20.0 MHz.The minimum VOH (output high voltage) is 4.0 V and the maximum is Vdd V.The minimum VOL (output low voltage) is 0 V and the maximum is 0.4 V.The minimum DLO, DRO setup time is 15 ns.The minimum DLO, DRO hold time is 15 ns.The minimum input data setup time (rise of BCI) is 50 ns.The minimum input data hold time (rise of BCI) is 20 ns.