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TLV320AIC25IPFB Datasheet(PDF) 7 Page - Texas Instruments |
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TLV320AIC25IPFB Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 53 page  www.ti.com ADC DYNAMIC PERFORMANCE ADC CHANNEL CHARACTERISTICS DAC PATH FILTER TLV320AIC20, TLV320AIC21 TLV320AIC24, TLV320AIC25 TLV320AIC20K, TLV320AIC24K SLAS363D – MARCH 2002 – REVISED APRIL 2005 With IIR Filter, FS = 8 KHz TEST PARAMETER MIN TYP MAX MIN TYP MAX UNIT CONDITIONS AIC20/21/24/25 AIC20k/24k VI = -3 dB 82 82 SNR Signal-to-noise ratio VI = -9 dB 76 76 VI = -3 dB 83 83 THD Total harmonic distortion dB VI = -9 dB 77 77 VI = -3 dB 78 78 Signal-to-harmonic THD+N distortion + noise VI = -9 dB 70 70 AIC20/21/24/25/20k/24k PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VI(pp) Differential-ended input level PGA gain = 0 dB 4 V VIO Input offset voltage ±5 mV IB Input bias current 125 µA Common mode voltage 1.35 V Dynamic range VI = -3 dB 87 dB Zero Digital Mute attenuation PGA = MUTE dB Code Intrachannel isolation 87 dB EG Gain error VI = -3 dB at 1020 Hz -0.45 dB EO(ADC) ADC converter offset error ±15 mV Common-mode rejection ratio at INMx and CMRR VI = -100 mV at 1020 Hz 50 dB INPx Idle channel noise V(INP,INM,MICIN) = 0 V 70 µVrms Ri Input resistance TA = 25°C 10 k Ω Ci Input capacitance TA = 25°C 2 pF IIR 5/fs S Channel delay FIR 17/fs S FS = 8 KHz (1)(2) FIR FILTER IIR FILTER PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT PATH FILTER, FS = 8 KHz 0 Hz to 200 Hz 0.1 0.05 200 Hz to 300 Hz -0.05 0.05 300 Hz to 2.4 KHz -0.25 0.15 -0.1 0.1 2.4 kHz to 3 kHz -0.3 0.1 -0.2 0.1 Filter gain relative to gain dB at 1020 Hz 3 kHz to 3.4 KHz -0.55 0.05 -0.25 0.05 3.4 kHz to 3.6 KHz -30 0 4 KHz -28 -34 4.5 KHz to 72 KHZ -70 -70 (1) The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The input signal is the digital equivalent of a sine wave (digital full scale = 0 dB). The nominal differential DAC channel output with this input condition is 4 VI(PP) . The pass band is 0 to 3600 Hz for an 8-kHz sample rate. This pass band scales linearly with the conversion rate. (2) The filter characteristics are specified by design and are not tested in production. 7 |
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