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PDF NJU7505A Data sheet ( Hoja de datos )
| Número de pieza | NJU7505A | |
| Descripción | BAND PASS FILTER | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJU7505A
BAND PASS FILTER
FOR AUDIO SPECTRUM ANALYZER DISPLAY
GENERAL DESCRIPTION
The NJU7505A 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 5 bands which
filter constant is switched by the internal clock.
Therefore, the audio signal shared of 5 bands is output
from a serial output terminal.
The 10 bands version using the double by the cascade
connection is prepared.
PACKAGE OUTLINE
NJU7505AD NJU7505AM
FEATURES
BPF for the audio spectrum analyzer display of the 5 bands
10 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-
1 page  
NJNUJ7U530555A5
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
Power Dissipation
Operating
Temperature
Storage Temperature
SYMBOL
VDD
VIN
VIO
VOUT
PD
Topr
Tstg
RATINGS
-0.3 to +7
-0.3 to VDD+0.3
-0.3 to 0
-0.3 to VDD+0.3
500(DIP), 300(DMP)
-30 to 85
-55 to 125
UNIT
V
V
V
mW
°C
°C
(Ta=25°C)
NOTE
7
5, 8
Note 3) If the IC are used on condition above the absolute maximum ratings, the IC may be destroyed. Using
the IC within electric characteristic conditions will cause malfunction and poor reliability.
Note 4) All voltage values are specified as VSS = 0V.
Note 5) When the voltage of the RSTb/CLKO terminal is gotten over the VSS level, the diode should be
connected between the RSTb/CLKO terminal and the external.
Note 6) Decoupling capacitor should be connected between the VDD terminal and the VSS due to the
stabilization of the operation.
Note 7) Applied to the AIN or the OSC2 terminals.
Note 8) Applied to the RSTb/CLKO terminal.
DC CHARACTERISTICS
PARAMETER
Operating Voltage
Operating Current
Input Leak Current 1
Input Leak Current 2
External Clock
Input Voltage
Output Voltage 1
Output Voltage 2
Output Offset Voltage
BPF Output Voltage
SYMBOL
CONDITITONS
VDD
IDD
IIL1
IIH1
IIL2
VILC
VIHC
VOL1
VOH1
VOL2
VOH2
VOS
VOUT
VDD Terminal
AIN Terminal
RSTb/CLKO Terminal
OSC2 Terminal
VIL1=0V
VIH1=5V
VIH2=0V
RD Terminal
IOL1=100µA
IOH1=-100µA
RSTb/CLKO
IOL1=100µA
Terminal
IOH1=-5µA
AOUT Terminal
AIN:OPEN
AOUT Terminal Sine Wave Input
fIN=f1 to f5
VIN=200mVp
MIN
4.5
-
-0.1
0.033
-0.2
0
3.5
0
4.5
0
4.25
-
-
3.5
(VDD=5V, VSS= 0V, Ta=25°C)
TYP MAX UNIT NOTE
5.0 6.0
V
6.0 12.0 mA
-0.05 -0.033
0.05 0.1
mA
-0.1 -0.05 mA
-
-
1.5
5.0
V
-
-
0.5
5.0
V
- 0.5
4.5 4.75
V
- 300 mV
26.0 -
dB 9,10,11
- - V 9,10
Note 9) This specification is tested on condition of fCLK=400kHz (The external clock is input to the OSC2
terminal through the capacitor for AC coupling.
Note 10) Each input frequency of f1 to f5 is referred to the table of the " PEAK FREQUENCY ".
Note 11) This specification is calculated from " VOUT / VIN ".
Ver.2008-07-30
-5-
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NJU7505A.PDF ] | |
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