M62457FP

MITSUBISHI SOUND PROCESSOR ICs M62457FP Peak hold IC for 5 band spectrum analayzer displays DESCRIPTION The M62457FP is 5 band peak hold ICs that use microprocessor time division to produce serial output for spectrum analyzer displays. PIN CONFIGURATION (TOP VIEW) Vcc/2 VREF IREF 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 GND2 PHOUT GND1 ENB SELC SELB SELA Vcc FEATURES 5 band peak hold elements for spectrum analyzer displays. Discharg time constant circuit for each band is on the chip. Single 5V power supply. DIFOUT COUT CNF AOUT ANF Outline 16P2N-A APPLICATION CD radio cassette players , mini-component stereo systems, car stereos RECOMMENDED OPERATING CONDITIONS Supply voltage range 4.5 to 6.5V Rated supply voltage 5.0V SYSTEM BLOCK DIAGRAM SELECTOR Audio signal Peak Hold output BPF5 PeaK Hold5 µ-com interfac SELA SELB SELC ENB ( 1 / 12 ) MITSUBISHI SOUND PROCESSOR ICs M62457FP Peak hold IC for 5 band spectrum analayzer displays PIN CONFIGURATION AND IC INTERNAL BLOCK DIAGRAM Vcc/2 1 Vcc/2 Gen. 16 GND2 VREF 2 V REF Gen. (VCC X 0.3 ) SELECTEOR 15 PHOUT IREF 3 I REF Gen. TEST 14 GND1 BPF IN DIFOUT 4 Amp-D + HOLD OUTPUT 13 ENB BPF 1 BPF 2 P.HOLD P.HOLD COUT 5 Amp-C + 12 SELC BPF 3 BPF 4 P.HOLD P.HOLD CNF 6 BPF 5 P.HOLD 11 SELB AOUT 7 Amp-A + 10 SELA 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) ( 2 / 12 ) MITSUBISHI SOUND PROCESSOR IC...