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Número de pieza | NJM2706 | |
Descripción | 3D Surround Audio Processor with Dynamic Bass Boost | |
Fabricantes | New Japan Radio | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de NJM2706 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
No Preview Available ! NJM2706
3D Surround Audio Processor with Dynamic Bass Boost
s GENERAL DESCRIPTION
The NJM2706 is the 3D surround audio processor with
dynamic bass boost, regenerates rich sound field with only
small two speakers.
The NJM2706 performs NJRC original surround technology
realizing natural surround sound field regarded center
orientation and NJRC original dynamic bass boost technology
provides graceful bass sound with low distortion.
It is suitable for mini-component, CD radio-cassette, TV,
speaker system and others.
s FEATURES
q Operating Voltage
+4.7V to +13.0V
q Wide Dynamic Range
3.1Vrms typ.
q Low Output Noise
8.9µVrms typ.
q "eala" 3D Surround Function (Stereo only)
q Dynamic Bass Boost Function
q High Frequency Compensation (f=10kHz, GV=+3dB)
q Variable Surround Effect by external resistor
q Internal Mode Control Switch
q Bipolar Technology
q Package Outline
DMP24, SSOP24, SDIP30
s PACKAGE OUTLINE
NJM2706VE1
NJM2706M
NJM2706L
s BLOCK DIAGRAM (DMP24, SSOP24)
24 23 22 21 20 19 18 17 16 15 14 13
HP
3D FILTER
LPF VC
HP
L SW
H
H SW
L
H SW
L
H SW
L
SW
H:eala
L:BYPASS
SW
H:eala_Bass
L:BYPASS
Vref
1 2 3 4 5 6 7 8 9 10 11 12
-1-
1 page TERMINAL DESCRIPTION
No.
DMP24
SSOP24
SDIP30
SYMBOL
FUNCTION
11
LPF Capacitor terminal for LPF
NJM2706
EQUIVALENT CIRCUIT
V+ V+
VOLTAGE
V+/2
150
2 2 MIN Monaural Amplifier Input
34
MOUT
Monaural Amplifier Output
V+ V+
V+
150
V+ V+
V+/2
V+/2
Capacitor Terminal for
45
Ca
Attack Time Constant
56
Cr
Capacitor Terminal for
Release Time Constant
6 7 BASSFIL1 BASS Filter Terminal 1
V+ V+
100
0V
V+ V+
VCA
V+
150
0V
-5-
5 Page NJM2706
1-3. Adjusting the Summing Level for ealaBASS effect to L/R Output Signal
Changing the resistance value connected between the terminal 8 and 9 can modify the Summing Level for the
ealaBASS effect to the L/R Output Signal.
2. Adjusting the High Frequency Compensation Filter
The NJM2706 has High Frequency Compensation Filter, which can produce well balance between boosted–bass
frequency range and treble frequency range. This picture shows the equivalent circuit for the High Frequency
Compensation Filter.
15k
20pi n
HFF IL
R6
30k
C11
560p
* The pin numbers apply in DMP24 and SSOP24's case.
The Cut-off Frequency fCH and the Voltage Gain GVH are defined as below:
fCH=
1
2πCR
=
1
2π×C11×R6
GVH= 20log
R6+15k
R6
In the typical application circuit shown on the page 9, the High Frequency Compensation Filter Cut-off Frequency
fCH is set to 10kHz and Voltage Gain GVH is set to 3.5dB.
- 11 -
11 Page |
Páginas | Total 15 Páginas | |
PDF Descargar | [ Datasheet NJM2706.PDF ] |
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