參數資料
型號: PT2254A
廠商: Princeton Technology Corporation
英文描述: POT 50K OHM 9MM HORZ NO BUSHING
中文描述: 電子音量控制IC
文件頁數: 6/7頁
文件大?。?/td> 117K
代理商: PT2254A
Princeton Technology Corp.
Tel : 886-2-29162151
Fax : 886-2-29174598
URL:
http://www.princeton.com.tw
Electronic Volume Controller IC PT2254A
PT2254A v 2.4
Page 6
Revised August 1998
APPLICATION CIRCUIT 4
Single Power Supply
Vss
L-OUT1
L-IN1
A-GND
L-IN2
L-OUT2
ST
GND
Vcc
R-OUT1
R-IN1
A-GND
R-IN2
R-OUT2
DATA
CK
PT2254A
ST
OUTPUT
10 F
10K
10K
10 F
100 F
Vcc (4 ~ 12 V)
0.15uF
INPUT
CK
DATA
51 K
LM 358
1
8
4
2
3
110 K
68 pF
+
+
+
+
Note: The OP and R,C components form a bandpass filter. Its f
L
(Low Frequency at –3dB
point) is about 20 Hz, f
H
(High Frequency at –3dB point) is about 22 KHz and the flat
gain (A
0
) is 3.15. Therefore, there is a limitation on the input voltage source: (i) The
amplitude should not be more than 1 Vrms, (ii) The bandwidth of input should be within
the range of 20 to 22 K; otherwise too much distortion will be generated.
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