M61506FP

MITSUBISHI SOUND PROCESSORS M61506FP Peak hold IC for 5 band spectrum analyzer displays DESCRIPTION The M61506FP is a 5 band peak hold ICs that use microprocessor time division to produce serial output for spectrum analyzer displays. FEATURES 5 band peak hold elements for spectrum analyzer displays. Discharge time constant circuit for each band is on the chip. Single 5V power supply. RECOMMENDED OPERATING CONDITIONS Supply voltage range Rated supply voltage 4.5 to 6.5V 5.0 V SYSTEM BLOCK DIAGRAM Audio signal BPF5 Peak BPF5 Peak Peak BPF5 Hold5 Peak BPF5 Hold5 Peak BPF5 Hold5 Hold5 Hold5 Peak SELECTOR Hold output µ -com interface SELA SELC SELB ENB MITSUBISHI ELECTRIC ( 1 / 13 ) BLOCK DIAGRAM Vcc/2 1 Vcc/2 Gen. 16 GND2 VREF 2 V REF Gen. SELECTOR 15 PHOUT (VccX0.3) IREF I REF Gen. TEST 3 14 GND1 BPF IN DIFOUT HOLD OUTPUT 13 ENB f1 BPF 1 4 2K + 2K P.HOLD P.HOLD 12 SELC P.HOLD P.HOLD 11 SELB P.HOLD AmpD f2 BPF 2 f3 BPF 3 COUT 5 AmpC + f4 BPF 4 CNF 6 f5 BPF 5 AOUT 7 2K 10 SELA Amp-A + HOLD C RESET 9 Vcc ANF 8 (Notes)f1=105Hz,f2=340Hz,f3=1KHz,f4=3.4KHz,f5=10.5KHz (The value is the design value) Units Resistance : Ω Capacitance: F MITSUBISHI ELECTRIC ( 2 / 13 ) FUNCTIONAL DESCRIPTION (1)The audio signal amplified by Amp-A and Amp-D into BPF/peak hold circuit for spectrum analyzer display. Because the last output signal inputs into A/D of microprocessor. The Vcc,GND had better be common with Vcc,GND of A/D of maicroproces...