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PT2256V-SL Datasheet(PDF) 10 Page - Princeton Technology Corp |
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PT2256V-SL Datasheet(HTML) 10 Page - Princeton Technology Corp |
10 / 19 page Tel:886-2-66296288 Fax:886-2-29174598 URL:http://www.princeton.com.tw PT2256V V1.2 - 10 - August, 2006 Electronic Volume Controller IC PT2256V APPLICATION CIRCUIT SINGLE POWER SUPPLY (NO LOUDNESS AND NO BACKUP CIRCUIT) L-Ch Output R-Ch Output R-Ch Input L-Ch Input Rx Cx VSS OUT1 IN1 LT1 AGND /UP /DN OSC VDD OUT2 IN2 LT3 AGND DCO /INH /RST PT2256V 100K 3.9K 3.9K 10 F µ 10 F µ UP Key Down Key 0.1 F µ 10 F µ 10 F µ 0.1 F µ 10K 10K 100 F µ VDD (4.5 to 11V) + + + + + + Notes: 1. Modifying the values of Rx and Cx affects the Oscillator Frequency of the IC. If the Fosc value is big, then the volume control change is fast. Likewise, if the Fosc value is small, the volume control change is slow. It is suggested that Rx= 33K, Cx=2.2µF. 2. The table for the Rx, Cx and Fosc values are given below: Rx Cx Fosc Rx Cx Fosc 33K 1.0µF 34.1Hz 33K 1.0µF 34.1Hz 33K 2.2µF 17.8Hz 51K 1.0µF 22.7Hz 33K 10µF 3.4Hz 100K 1.0µF 11.8Hz |
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