7537NE

Enables controlling the below-listed functions with 3- line serial data, including CE, DI, and CLK. Also, due to 0 V to 5 V swing of the serial data input voltage, permits the use of a general purpose microcomputer. Volume : Separately controls the Lch and Rch volume levels across 81 positions over the 0 dB to 79 dB (in 1 dB steps) range and °, and consequently also serves balance control purposes. Loudness : By virtue of a center tap provided at the 20 dB position of the volume controlling ladder resistors, permits loudness to be controlled with externally connected CR components. Fader : By varying only the rear or front output level across 16 positions, provides fader functions (in 2 dB steps over the 0 dB to 20 dB range, and 5 dB steps over the 20 dB to 45 dB range, and at °, for a total of 16 positions). Bass/Treble : With CR components externally connected, forms an NF type tone control circuit (Baxandall type) to exercise control across 15 positions over both the bass and treble functions in 2 dB steps.
By virtue of its CMOS structure, the LSI operates under a broad power supply voltage range from +4.5 V to +15 V, permitting the use of either a single or a dual ± power supply, whichever is preferred.