Texas Instruments TLV320AIC3104 Evaluation Module (EVM) and USB motherboard TLV320AIC3104EVM-K TLV320AIC3104EVM-K データシート
製品コード
TLV320AIC3104EVM-K
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
k
Ω
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
k
Ω
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 k
Ω
(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.
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.
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
7
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