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Description:

EV1000 is a highly integrated hybrid IC which contains in its inside LC7537, which is an IC electronically controllable volume, loudness,fader and tone(bass and treble),and its auxiliary circuits. It has many unique features: The first one is super small size relaized by direct bonding of LC7537. The second one is ordinary micro computer can control the volume as serial control is done at 5 V input. The third one is loudness function is contained. The forth one is four output buffer circuits are containedetc.

There are some specifications about it. Supply current(Icc) is 25 mA typ and 40 mA max(quiescent). Voltage gain(Gv) is -1 dB min, 0 dB typ and +1 dB max(input signal level:300 mVrms).Crosstalk (CT) is -90 dB typ and -80 dB max(input signal level:1Vrms). Total harmornic distortion(THD) is 0.01% typ and 0.07% max(30 kHz LPF used). Max.output voltage(Vo max) is 1.2 Vrms min and 1.7 Vrms typwhen THD is 1%.Noise level(VN) is 6 Vrms typ and 15 uVrms max(IN:short, DIN: audio filter used).