PT2350 [PTC]
Tone Control Subwoofer Low Pass Filter IC; 音调控制低音炮的低通滤波器IC
| 型号： | PT2350 |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | Tone Control Subwoofer Low Pass Filter IC |
| 文件： | 总4页 (文件大小：66K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Tone Control Subwoofer Low Pass Filter IC
PT2350
DESCRIPTION
PT2350 is a tone control subwoofer cross-over low pass filter chip utilizing CMOS Technology. It features
a tone control range of + 10dB (50Hz, 4 KHz) and subwoofer low pass filter of the second order Sallen
Key Design. The roll-off point can be adjusted by changing the value of the external capacitor. Pin assign-
ments and application circuits are optimized for easy PCB Layout and cost saving advantages.
FEATURES
!CMOS Technology
!2 - Channel Input
!3 - Channel Output (Including 1 stereo Output and Subwoofer Output)
!Low Total Harmonic Distortion (THD<0.01%, Subwoofer THD<0.2%)
!High S/N Ratio (S/N Ratio <-87dB, A-weighting)
!Least External Components
!Adjustment of Frequency response by changing the value of the external component
!Single Power Supply: 3 to 8.5 Volts
!Available in 20 pins, DIP or SO Package
APPLICATIONS
!Multi-Media 3D Satellite Speaker and Subwoofer System
!Car Audio
!Audio Equipment
!Sound Card
!Other Electrical Audio Equipment
Ref. No. 2350 v1.1
1
Written July 1999
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Tone Control Subwoofer Cross-Over Low Pass Filter IC
PT2350
PIN CONFIGURATION
L
R
R
R
R
R
R
R
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
IN
IN
L
L
L
L
L
B1
B2
B3
T1
T2
B1
B2
B3
T1
T2
L
V
OUT
OUT
S
C
V
REF
OUT
1
C
2
10
Vss
DD
PT2350
Ref. No. 2350 v1.1
2
Written July 1999
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Tone Control Subwoofer Cross-Over Low Pass Filter IC
PT2350
APPLICATION CIRCUIT
Right
3 Channel Input
10K VR
(A)
Left
Channel Input
3
+
+
2
2
10KVR 1
(A)
1
4.7uF
4.7uF
R
L
L
L
L
L
IN
IN
Right Channel Bass Control VR
Left Channel Bass Control VR
R
R
R
R
R
B1
B2
B3
T1
T2
3
1
B1
B2
B3
3
10K
10K
2
2
CL2
0.05uF
CL1
0.05uF
100K (B) VR
100K (B) VR
1
Left Channel Treble Control VR
Right Channel Treble Control VR
3
3
T1
100K (B) VR
100K (B) VR
CH1
2
0.005uF
CH2
2
0.005uF
1
1
L
T2
Right
Channel Output
+
+
Left
Channel Output
R
S
L
V
OUT
OUT
OUT
4.7uF/16V
0.068uF
4.7uF/16V
REF
2
+
C1
Subwoofer Output
12V
C
1
DD
C
Vss
4.7uF/16V
0.15uf
+
V
4.7uF/16V
220Ohms
100uF
8.2VZD
PT2350
Notes: 1. If you use the above values: Treble Control Range = 4KHz + 10 dB
Bass Control Range = 50 Hz + 10 dB
Subwoofer Output Roll-Off Point is at -3dB at 130Hz
Slope Rate = -12dB/oct
2. It is recommended that you use Mylar or Metal Capacitors for better audio quality.
3. Please do not connect 0.1µF or any by-pass capacitor between the GND and VDD.
Ref. No. 2350 v1.1
3
Written July 1999
Tel: 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Tone Control Subwoofer Low Pass Filter IC
ORDER INFORMATION
PT2350
Valid Part Number
PT2350
Package Type
20 pins, DIP (300 mil)
20 pins, SO (300 mil)
PT2350-S
Ref. No. 2350 v1.1
4
Written July 1999
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