Datasheet

ELECTRICAL CHARACTERISTICS
TLV320AIC3107
www.ti.com .............................................................................................................................................. SLOS545C – NOVEMBER 2008 – REVISED MARCH 2009
At 25 ° C, AVDD_DAC = 3.3 V, DRVDD = 3.3 V, SPVDD = 5 V, IOVDD = 3.3 V, DVDD = 1.8 V, Fs = 48-kHz, 16-bit audio data
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO ADC
Input signal level (0 dB) Single-ended input 0.707 V
RMS
Signal-to-noise ratio,
Fs = 48 ksps, 0 dB PGA gain, Inputs ac-shorted to ground 80 92 dB
A-weighted
(1) (2)
Fs = 48 ksps, 0 dB PGA gain,
Dynamic range
(2)
91 dB
– 60 dB full-scale input signal
Fs = 48 ksps, 0 dB PGA gain,
THD Total harmonic distortion – 88 – 70 dB
– 2dB full-scale 1kHz input signal
217 Hz signal applied to DRVDD 49
Power supply rejection ratio dB
1 kHz signal applied to DRVDD 46
Fs = 48 ksps, 0 dB PGA gain,
Gain error 0.84 dB
– 2dB full-scale 1kHz input signal
1 kHz, -2dB full-scale signal, MIC3L to MIC3R -86
Input channel separation 1 kHz, -2dB full-scale signal, MIC2L to MIC2R -98 dB
1 kHz, -2dB full-scale signal, MIC1L to MIC1R -75
ADC programmable gain
1-kHz input tone 59.5 dB
amplifier maximum gain
ADC programmable gain
0.5 dB
amplifier step size
LINE1L inputs routed to single ADC
20
Input mix attenuation = 0 dB
LINE1L inputs routed to single ADC,
80
input mix attenuation = 12 dB
Input resistance k Ω
LINE2L inputs routed to single ADC
20
Input mix attenuation = 0 dB
LINE2L inputs routed to single ADC,
80
input mix attenuation = 12 dB
Input level control minimum
0 dB
attenuation setting
Input level control maximum
12 dB
attenuation setting
Input signal level Differential Input 1.414 V
RMS
Signal-to-noise ratio, Fs = 48 ksps, 0 dB PGA gain, Inputs ac-shorted to
92 dB
A-weighted
(1) (2)
ground, Differential Mode
Fs = 48 ksps, 0 dB PGA gain, – 2dB Full-scale 1kHz input
THD Total harmonic distortion – 91 dB
signal, Differential Mode
ANALOG PASS THROUGH MODE
LINE1L to LEFT_LOP 330
LINE1R to RIGHT_LOP 330
Input to output switch
Ω
resistance, (r
DS(on)
)
SWINP to SWOUTP 1
SWINM to SWOUTM 1
ADC DIGITAL DECIMATION FILTER, Fs = 48 kHz
Filter gain from 0 to 0.39 Fs ± 0.1 dB
Filter gain at 0.4125 Fs – 0.25 dB
Filter gain at 0.45 Fs – 3 dB
Filter gain at 0.5 Fs – 17.5 dB
Filter gain from 0.55 Fs to 64 Fs – 75 dB
Filter group delay 17/Fs s
(1) Ratio of output level with 1-kHz 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.
(2) All performance measurements done with 20-kHz 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.
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