Datasheet

TLV320AIC3104
www.ti.com SLAS510C –FEBRUARY 2007–REVISED DECEMBER 2010
ELECTRICAL CHARACTERISTICS
At 25°C, AVDD = DRVDD = IOVDD = 3.3 V, DVDD = 1.8 V, f
S
= 48 kHz, 16-bit audio data (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO ADC
Input signal level Single-ended 0.707 V
RMS
SNR Signal-to-noise ratio
(1) (2)
A-weighted, f
S
= 48 ksps, 0-dB PGA gain, inputs ac-shorted to ground 80 92 dB
Dynamic range
(1) (2)
f
S
= 48 ksps; 0-dB PGA gain; 1-kHz, –60-dB full-scale input signal 93 dB
THD Total harmonic distortion f
S
= 48 ksps; 0-dB PGA gain; 1-kHz, –2-dB full-scale input signal –89 –75 dB
217-Hz signal applied to DRVDD 55
PSRR Power-supply rejection ratio dB
1-kHz signal applied to DRVDD 44
Input channel separation 1-kHz, –2-dB full-scale signal, MIC1L to MIC1R –71 dB
Gain error f
S
= 48 ksps; 0-dB PGA gain; 1-kHz, –2-dB full-scale input signal 0.82 dB
ADC programmable-gain
1-kHz input tone 59.5 dB
amplifier maximum gain
ADC programmable-gain
0.5 dB
amplifier step size
MIC1L/MIC1R inputs routed to single ADC
20
input mix attenuation = 0 dB
MIC1L/MIC1R inputs routed to single ADC
80
input mix attenuation = 12 dB
Input resistance kΩ
MIC2L/MIC2R inputs routed to single ADC
20
input mix attenuation = 0 dB
MIC2L/MIC2R inputs routed to single ADC
80
input mix attenuation = 12 dB
Input resistance 80 kΩ
Input capacitance MIC1/LINE1 inputs 10 pF
Input level control minimum
0 dB
attenuation setting
Input level control maximum
12 dB
attenuation setting
Input level control attenuation
1.5 dB
step size
ANALOG PASSTHROUGH MODE
MIC1/LIN1 to LINEOUT 330
Input-to-output switch
R
DS(on)
Ω
resistance
MIC2/LIN2 to LINEOUT 330
Input Signal Level, Differential
SNR Signal-to-noise ratio A-weighted, f
S
= 48 ksps, 0 dB PGA gain, inputs ac-shorted to ground 92 dB
THD Total harmonic distortion f
S
= 48 kHz; 0-dB PGA gain, 1-kHz, –2-dB full-scale input signal –94 dB
ADC DIGITAL DECIMATION FILTER, f
S
= 48 kHz
From 0 to 0.39 f
S
±0.1
At 0.4125 f
S
–0.25
Filter gain At 0.45 f
S
–3 dB
At 0.5 f
S
–17.5
From 0.55 f
S
to 64 f
S
–75
Filter group delay 17/f
S
s
MICROPHONE BIAS
Programmable setting = 2 V 2
Programmable setting = 2.5 V 2.3 2.455 2.7
Bias voltage V
DRVDD –
Programmable setting = DRVDD
0.24
Current sourcing Programmable setting = 2.5 V 4 mA
AUDIO DAC – DIFFERENTIAL LINE OUTPUT, R
LOAD
= 10 kΩ
(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.
Copyright © 2007–2010, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Links: TLV320AIC3104