NJU7505XD Просмотр технического описания (PDF) - Japan Radio Corporation
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NJU7505XD Datasheet PDF : 9 Pages
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NJU7505
! TERMINAL DESCRIPTION
NO. SYMBOL
FUNCTION
1
OSC1 External Resistor connecting terminal.
2
OSC2 External Resistor connecting terminal or External clock input terminal.
3
RST/CLKO
Both as Reset input terminal
and the clock of (2/3)*fosc output terminal.
4
RD Trigger signal for reading-out the AOUT of each band output terminal.
5
VSS
GND
0V
8
VDD Positive power supply +5.0 V
6
AOUT Peak voltage of each band output terminal.
7
AIN
Audio signal input terminal.
! VERSION LINEUP AND PEAK FREQUENCY
The NJU7505 prepares two version of A and B which are different of the peak frequency of each bands.
The version of A is recommended for the 5 bands application using the single and the version of B is
recommended for the 10 bands using the double by the cascade connection, however, the version of A can be
used for the 10 bands using the double and the version of B can be used for the 5 bands using the single.
Band
f1a
f1b
f2a
f2b
f3a
f3b
f4a
f4b
f5a
f5b
Peak Frequency ( Hz )
Using the single
Using the double
Version of A
Version of B
Version of A
Version of B
12k
18k
12k
18k
-
-
8k
12k
3.5k
5.3k
3.5k
5.3k
-
-
2.3k
3.5k
1k
1.5k
1k
1.5k
-
-
670
1k
250
375
250
375
-
-
165
250
63
95
63
95
-
-
42*
63
Note 1) The bands of f1a, f2a, ... f5a correspond to the master side and the bands of f1b, f2b, ... f5b correspond
to the slave side at the cascade connection of the double.
Note 2) It may not be output along the expectation at the peak frequency of * marking, since the sampling time is
not enough.
The example of using the single
The example of using the double
OSC1
AOUT
f 1a to f5a
OSC1
AOUT
f 1a to f5a OSC1
AOUT
f 1b to f5b
NJU7505
NJU7505
Master
NJU7505
Slave
f OSC
OSC2
f OSC
RST/CLKO
2/3 * f OSC
OSC2
-2-
Ver.2004-06-04
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