[Mixed Signal Integration]
Description
The seven band graphic equalizer IC is a CMOS chip that divides the audio spectrum into seven bands, 63Hz, 160Hz, 400Hz, 1kHz, 2.5kHz, 6.25kHz and 16kHz. The seven frequencies are peak detected and multiplexed to the output to provide a DC representation of the amplitude of each band. No external components are needed to select the filter responses. Only an off chip resistor and capacitor are needed to select the on chip clock oscillator frequency. The filter center frequencies track this frequency.
FEATUREs
Low Power Consumption
Only Two External Components
On Chip Ground Reference
Switched - Capacitor Filters
3.3 or 5 volt Operation
20 dB of Gain Typical
On Chip Oscillator
Output Multiplexor
Variable Decay Time
8 Pin Package
APPLICATIONs
Portable Stereos
Car Stereos
Hi-Fi Stereos
Spectrum Analyzers