Mixed Signal Integration MSGEQ7
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.
| Part No. |
MSGEQ7 |
| Datasheet |
MSGEQ7
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| Manufacturer |
Mixed Signal Integration |
| Description |
Seven Band Graphic Equalizer |
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DESCRIPTION
FEATURES
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. Other than coupling and decoupling capacitors, no other external components are needed. The chip supply can be between 2.7 and 5.5 volts with 5 volts providing the best performance. The device has very low quiescent current ( less than 1mA typical) for portable audio devices. The multiplexor is controlled by a reset and a strobe, permitting multiplexor readout with only two pins. The multiplexor readout rate also controls the decay time (10% decay per read), so no external pins are needed for this function. 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 St...
