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TLV320AIC3268IRGCR Datasheet(PDF) 11 Page - Texas Instruments |
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TLV320AIC3268IRGCR Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 263 page  TLV320AIC3268 www.ti.com SLAS953A – JANUARY 2014 – REVISED FEBRUARY 2014 Electrical Characteristics, ADC (continued) TA = 25°C; AVDD_18, AVDDx_18, HVDD_18, CPVDD_18, DVDD_18, IOVDDx_33 = 1.8V; RECVDD_33 = 3.3V; SVDD, SPK_V, MICBIAS_VDD = 3.6V; fS (Audio) = 48kHz; Audio Word Length = 20 bits; Cext = 1μF on VREF_SAR and VREF_AUDIO terminals; PLL disabled, Device CM = 0.9V unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Inrter Channel -3dBr full scale signal 110 dB Separation -3dBr full scale signal on IN2L and IN2R, IN2L and IN2R not 104 dB Input Terminal Crosstalk internally routed. IN1L routed to Left ADC and ac-coupled to ground, IN1R routed to Right ADC and ac-coupled to ground 217Hz, 100mVpp signal on AVDD_18, AVDDx_18, HPVDD_18, 59 CPVDD_18, IOVDDx_18, DVDD_18 Power Supply Rejection PSRR dB Ratio 1kHz, 100mVpp signal on AVDD_18, AVDDx_18, HPVDD_18, 59 CPVDD_18, IOVDDx_18, DVDD_18 IN1L, IN1R, IN2L, IN2R, IN3L, IN3R inputs, Rin=10kΩ 0 47.5 ADC Analog Programmable Gain All Inputs, Rin=20K -6 41.5 dB Amplifier, Gain Range IN1L, IN1R, IN2L, IN2R, IN3L, IN3R inputs, Rin=40kΩ -12 35.5 ADC Analog 0.5 Programmable Gain dB Amplifier, Gain Step Size AUDIO ADC (Differential) CM=0.9V 1.0 Input signal level (0dB) VRMS CM=0.75V 0.75 1kHz sine wave input, Differential Configuration IN1L, IN1R routed to Right ADC and IN2L, IN2R routed to Left ADC Rin = 20kΩ, fs = 48kHz, CM=0.9V Device Setup AOSR = 128, MCLK = 256*fs, AGC = OFF, Channel Gain = 0dB, Processing Block = PRB_R1, Power Tune = PTM_R4 SNR Signal-to-noise ratio, A- Inputs ac-shorted to ground 87 95 weighted (3) (4) dB Inputs ac-shorted to ground, CM=0.75V, AVDD_18, 92 AVDDx_18=1.5V DR Dynamic range A- –60dBr full scale signal 95 dB weighted(3) (4) –60dBr full scale signal, CM=0.75V, AVDD_18,AVDDx_18=1.5V 92 THD+N Total Harmonic –3dBr full scale –89 -76 dB Distortion plus Noise –3dBr full scale, CM=0.75V, AVDD_18, AVDDx_18=1.5V -85 Gain Error –3dBr full scale ±0.02 dB –3dBr full scale, CM=0.75V, AVDD_18, AVDDx_18=1.5V ±0.1 Inter Channel Gain Error –3dBr full scale 0.1 dB Mismatch –3dBr full scale, CM=0.75V, AVDD_18, AVDDx_18=1.5V 0.2 Output Offset Inputs ac-shorted to ground -2053 LSB Inputs ac-shorted to ground, CM=0.75V, AVDD_18, -2198 AVDDx_18=1.5V Inter Channel Seperation -3dBr full scale signal 111 dB Input Terminal Crosstalk -3dBr input on IN2L, IN2R. IN2L, IN2R internally not routed.IN1L, 117 dB IN1R differentially routed to Right ADC ac-shorted to ground. -3dBr on IN2L, IN2R. IN2L,IN2R internally not routed.IN3L, IN3R differentially routed to Left ADC ac-shorted to ground. PSRR Power Supply Rejection 217Hz, 100mVpp signal on AVDD_18, AVDDx_18, HPVDD_18, 53 Ratio CPVDD_18, IOVDDx_18, DVDD_18 dB 1kHz, 100mVpp signal on AVDD_18, AVDDx_18, HPVDD_18, 53 CPVDD_18, IOVDDx_18, DVDD_18 (3) Ratio of output level with 1kHz full-scale sine wave input, to the output level with the inputs short circuited, measured A-weighted over a 20-Hz to 20-kHz bandwidth using an audio analyzer. (4) All performance measurements done with pre-analyzer 20kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-band noise, which, although not audible, may affect dynamic specification values. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TLV320AIC3268 |
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