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PT2257-S Datasheet(PDF) 9 Page - Princeton Technology Corp |
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PT2257-S Datasheet(HTML) 9 Page - Princeton Technology Corp |
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9 / 16 page  Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2257 V1.4 - 9 - May, 2008 Electronic Volume Controller IC PT2257 ABSOLUTE MAXIMUM RATING Parameter Symbol Rating Unit Supply voltage VDD 12 V Operating temperature Topr -40 to +85 ℃ Storage temperature Tstg -65 to +150 ℃ Input voltage VI -0.3 to VCC+0.3 V AUDIO SECTION ELECTRICAL CHARACTERISTICS Parameter Symbol Condition Min. Typ. Max. Unit Operating voltage VDD 3 9 10 V Operating current IDD VDD=9V, VI=0V - 9 15 mA Minimum Attenuation -0.5 0 - Volume attenuation range ARANGE Maximum Attenuation -72 -79 - dB Attenuation step ASTEP - 1 - dB Joint step gain error GERR - 0.5 - dB Inter-channel attenuation gain error CERR - 0.5 - dB Maximum output level Vomax VDD=9V, F=1KHz Volume Att=0dB Rload=50K, THD<1% 2.0 2.3 2.5 Vrms Vout=2Vrms - 0.07 0.09 Total harmonic distortion THD F =1KHz, Volume Att=0dB, A-weighted Rload=50K Vout=200m Vrms - 0.003 0.005 % Noise output No Vin=GND, MUTE=OFF Volume Att=0dB, A-weighted - 2 3 µVrms 22~22KHz 90 100 103 Signal-to-Noise ratio SNR 0dB=Vomax, ATT=0dB A-weighted 110 120 123 dB Channel separation CS Vin=2.5Vrms, F=1KHz,Volume=0dB 100 120 125 dB Mute attenuation MUTE Vin=2.5Vrms, F=1KHz Volume Att=0dB, A-weighted 90 95 97 dB Frequency response FR Vin=1Vrms, Volume Att=-10dB - 1 1.3 MHz Input impedance Rin F=1KHz 15 20 26 KΩ Output impedance Rout F=1KHz, Vout=100m Vrms - 100 - Ω Minimum load resistance Rload VDD=9V, Vo=2Vrms,THD<1% 2 - - KΩ |
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