PT2254 데이터 시트보기 (PDF) - Princeton Technology
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PT2254 Datasheet PDF : 7 Pages
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Princeton Technology Corp.
Electronic Volume Controller IC
APPLICATION CIRCUIT 2
Dual Power Supply
(Only One Channel for Reference)
Vss -6V
10 F
Tel : 886-2-29162151
Fax : 886-2-29174598
URL: http://www.princeton.com.tw
PT2254A
4
3
1
LM 358
2
8
VDD +6V
INPUT
A-GND
OUTPUT
ST
10 F
10 F
+
10 F +
CK
D ATA
V ss
Vcc
L-OUT1 R-OUT1
L -IN 1
R -IN 1
A-GND A-GND
L -IN 2
R -IN 2
L-OUT2 R-OUT2
ST
D ATA
GND
CK
PT2254A
0.15uF
68 pF
51 K
110 K
Note: The OP and R,C components form a bandpass filter. Its fL(Low Frequency at –3dB
point) is about 20 Hz, fH (High Frequency at –3dB point) is about 22 KHz and the flat
gain (A0) 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.
PT2254A v 2.4
Page 4
Revised August 1998
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