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TLV320AIC22 Datasheet(PDF) 9 Page - Texas Instruments |
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TLV320AIC22 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 55 page  TLV320AIC22 DUAL VOIP CODEC SLAS281B – JULY 2000 – REVISED JUNE 2002 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 ADC dynamic performance characteristics (see Note 5 and Note 8) (continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT THD –68 VI = –9 dBr, PGA gain = 0 dB, Sampling rate = 8 kHz SNR –66 dB ADC dynamic performance with THD+N –65 y caller ID input selected THD –45 VI = –40 dBr, PGA gain = 0 dB, Sampling rate = 8 kHz SNR –40 dB THD+N –38 V 3 dB PGA i 0 dB P i 0 dB THD –72 VI = –3 dBr, PGA gain = 0 dB, Preamp gain = 0 dB Sampling rate = 16 kHz SNR –70 dB Sam ling rate = 16 kHz THD+N –68 ADC d i f ith V 9 dB PGA i 0 dB P i 0 dB THD –72 ADC dynamic performance with handset or headset selected VI = –9 dBr, PGA gain = 0 dB, Preamp gain = 0 dB Sampling rate = 16 kHz SNR –70 dB handset or headset selected Sam ling rate = 16 kHz THD+N –68 V 40 dB PGA i 0 dB P i 0 dB THD –50 VI = –40 dBr, PGA gain = 0 dB, Preamp gain = 0 dB Sampling rate = 16 kHz SNR –42 dB Sam ling rate = 16 kHz THD+N –40 NOTES: 5. The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The analog input test signal is a sine wave with 0 dBr = 4 VI(PP) differential as the reference level for ADC analog input signal. 8. The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output common mode is 1.5 V. ADC characteristics PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VI(PP) Peak-input voltage, differential Preamp gain = 0 dB 4 V Dynamic range 82 dB Intrachannel isolation (measured at ADC output) HSIN is selected for ADC input. Ground the input to the ADC; full-scale input applied to DAC. 85 dB EG Gain error (valid for HSIN, HDIN, and MCIN) VI = 1 dB at 1020 kHz –1 1 dB EG Gain error (valid for LNIN) VI = –1 dB at 1020 kHz ±2.5 dB EO(ADC) ADC channel offset error HSIN selected for ADC input, preamp gain = 14 dB, 0-V differential input signal, inputs are ac coupled 50 mV CMRR Common-mode rejection ratio HSIN selected for ADC input, preamp gain = 14 dB, 0-V differential input signal, common mode signal of –10 dB applied 50 65 dB Idle channel noise HSIN selected for ADC input, preamp gain = 14 dB, 0-V differential input signal, inputs are ac coupled 30 75 µV rms Channel delay (high-pass filter bypassed) 14/fs s |
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