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TSC2111 Arkusz danych(PDF) 6 Page - Texas Instruments |
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TSC2111 Arkusz danych(HTML) 6 Page - Texas Instruments |
6 / 99 page TSC2111 SLAS495− JUNE 2006 www.ti.com 6 ELECTRICAL CHARACTERISTICS (continued) At +25 °C, AVDD1, AVDD2, DRVDD, IOVDD = 3.3 V, BVDD = 3.9 V, DVDD = 1.8 V, Int. Vref = 2.5 V, Fs (Audio) = 48 kHz, unless otherwise noted (continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS HEADSET MICROPHONE BIAS Register 1DH/Page 2, D7−D8=00 3.3 Voltage range Register 1DH/Page 2, D7−D8=01 2.5 V Voltage range Register 1DH/Page 2, D7−D8=1X 2 V 217 Hz, 100 mV on AVDD1/2 55 PSRR 217 Hz, 100 mV on BVDD 77 dB PSRR 1020 Hz, 100 mV on AVDD1/2 55 dB 1020 Hz, 100 mV on BVDD 77 Sourcing current Voltage drop <25 mV 5 mA HANDSET MICROPHONE BIAS Voltage range Register 1DH/Page 2, D6=0 2.5 V Voltage range Register 1DH/Page 2, D6=1 2 V PSRR 217 Hz, 100 mV on AVDD1/2 55 dB PSRR 1020 Hz, 100 mV on AVDD1/2 55 dB Sourcing current Voltage drop <25 mV 5 mA DAC INTERPOLATION FILTER Pass band 20 0.45Fs Hz Pass band ripple ±0.06 dB Transition band 0.45Fs 0.55Fs Hz Stop band 0.55Fs 7.455Fs Hz Stop band attenuation 65 dB Filter group delay 21/Fs Sec De-emphasis error ±0.1 dB DAC HEADPHONE OUTPUT Load = 16 Ω (single-ended), 50 pF Full-scale output voltage (0dB) 0.848 Vrms Output common mode 1.5 V SNR Measured as idle channel noise, A-weighted 85 95 dBA THD −1 dBFS Input, 0-dB gain −80 −60 dB PSRR 217 Hz, 100 mV on AVDD1/AVDD2(2) 65 dB PSRR 1020 Hz, 100 mV on AVDD1/AVDD2(2) 65 dB Interchannel isolation Coupling from ADC to DAC 100 dB Mute attenuation 120 dB Maximum output power Per channel 44 mW Digital volume control −63.5 0 dB Digital volume control step size 0.5 dB Channel separation Between SPK1 and SPK2 −75 dB (2) DAC PSRR measurement is calculated as: PSRR + 20 log 10 VSIGsup V SPK1 2 |
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