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M62457FP

Mitsubishi
Part Number M62457FP
Manufacturer Mitsubishi
Description Peak hold IC
Published Apr 26, 2005
Detailed Description MITSUBISHI SOUND PROCESSOR ICs M62457FP Peak hold IC for 5 band spectrum analayzer displays DESCRIPTION The M62457FP i...
Datasheet PDF File M62457FP PDF File

M62457FP
M62457FP

Overview
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 ICs M62457FP Peak hold IC for 5 band spectrum analayzer displays Functional description (1) Audio signal passes Amp-a and Amp-d, and it is input into BPF/peak hold circuit for spectrum analyzer.
Basic use examples,the last output signal is input into A/D of microprocessor.
Howevwe VCC,GND of analog series had better be common with VCC,GND of maicroprocessor.
THe maicroprocessor does groundisolation to analog series.
Amp-C is the input amplifier to reject common-mode signal (noise), it utilizes e...


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