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PT2254AD Datasheet(PDF) 4 Page - Princeton Technology Corp |
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PT2254AD Datasheet(HTML) 4 Page - Princeton Technology Corp |
4 / 7 page 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 4 Revised August 1998 APPLICATION CIRCUIT 2 Dual Power Supply (Only One Channel for Reference) Vss L-OU T1 L-IN 1 A-G N D L-IN 2 L-OU T2 ST GN D Vcc R-O U T 1 R-IN 1 A-G N D R-IN 2 R-O U T 2 DATA CK P T 2254A ST OU T PUT 10 F 10 F 10 F 0.15 uF A-G N D IN PU T CK DATA 10 F 51 K LM 3 5 8 3 2 VD D +6 V Vss -6 V 1 11 0 K 68 p F 8 4 + + 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. |
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