NJU7507A Datasheet: BAND PASS FILTER





NJU7507A Datasheet PDF

Part Number NJU7507A
Description BAND PASS FILTER
Manufacture New Japan Radio
Total Page 8 Pages
PDF Download Download NJU7507A Datasheet PDF

Features: NJU7507A BAND PASS FILTER FOR AUDIO SPE CTRUM ANALYZER DISPLAY GENERAL DESCRIP TION The NJU7507A is a band pass filter for audio spectrum analyzer display. I t consists of high and low band pass fi lters, CR oscillation circuit, control circuit and DC transfer circuit. Each b and pass filter using the switched capa citor filter technology operates at the shared time by 7 bands which filter co nstant is switched by the internal cloc k. Therefore, the audio signal shared o f 7 bands is output from a serial outpu t terminal. The 14 bands version using the double by the cascade connection is prepared. PACKAGE OUTLINE NJU7507AD N JU7507AM FEATURES BPF for the audio s pectrum analyzer display of the 7 bands 14 bands extension is available by th e cascade connection BPF using the swi tched capacitor filter technology CR o scillation circuit on chip (External c lock input is available) Power-on init ialization circuit on chip (External r eset input is available) C-MOS Technology Package Outline DI.

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NJU7507A datasheet
NJU7507A
BAND PASS FILTER
FOR AUDIO SPECTRUM ANALYZER DISPLAY
GENERAL DESCRIPTION
The NJU7507A is a band pass filter for audio spectrum
analyzer display.
It consists of high and low band pass filters, CR oscillation
circuit, control circuit and DC transfer circuit.
Each band pass filter using the switched capacitor filter
technology operates at the shared time by 7 bands which
filter constant is switched by the internal clock.
Therefore, the audio signal shared of 7 bands is output
from a serial output terminal.
The 14 bands version using the double by the cascade
connection is prepared.
PACKAGE OUTLINE
NJU7507AD NJU7507AM
FEATURES
BPF for the audio spectrum analyzer display of the 7 bands
14 bands extension is available by the cascade connection
BPF using the switched capacitor filter technology
CR oscillation circuit on chip
(External clock input is available)
Power-on initialization circuit on chip
(External reset input is available)
C-MOS Technology
Package Outline
DIP8, DMP8
PIN CONFIGURATION
OSC1 1
OSC2 2
RSTb/CLKO
RD
3
4
5
6
7
8
VDD
AIN
AOUT
VSS
BLOCK DIAGRAM
RSTb/CLKO
RD
Audio Signal
Control Signal
Clock Signal
OSC1
OSC2
OSC
Control Circuit
fOSC fOSC/16 fOSC/4 iH
iL RL
RH
ΦH ΦL
Power-on
Initialize
AIN
Input BUF
LPF
VDD
VSS
VDD
-
+
AGND
VSS
BPF
High Band
High Band
Peak Detector
BPF
Low Band
Low Band
Peak Detector
Level Shifter
&
Output BUF
AOUT
Ver.2008-07-30
-1-

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