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TLV320ALC31 Datasheet(PDF) 5 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
Part # TLV320ALC31
Description  LOW POWER STEREO AUDIO CODEC FOR PORTABLE AUDIO/TELEPHONY
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Manufacturer  BURR-BROWN [Burr-Brown (TI)]
Direct Link  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

TLV320ALC31 Datasheet(HTML) 5 Page - Burr-Brown (TI)

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ELECTRICAL CHARACTERISTICS
TLV320AIC31
SLAS497A – AUGUST 2006 – REVISED SEPTERMBER 2006
At 25
°C, AVDD, DRVDD, 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
VRMS
Signal-to-noise ratio,
Fs = 48 kHz, 0 dB PGA gain, IN1 inputs selected and
80
92
dB
A-weighted(1)(2)
AC-shorted together
Fs = 48 kHz, 1-kHz –60 dB full-scale input applied at
Dynamic range, A-weighted(1)(2)
92
dB
IN1 inputs, 0-dB PGA gain
–90
-75
dB
Fs = 48 kHz, 1-kHz –2dB full-scale input applied at
THD
Total harmonic distortion
IN1 inputs, 0-dB PGA gain
0.003%
0.018%
1 kHz, 100 mVpp on AVDD, DRVDD, single-ended
46
input
Power supply rejection ratio
dB
1 kHz, 100 mVpp on AVDD, DRVDD, differential input
68
ADC channel separation
1 kHz, –1 dB IN2L to IN2R
–87
dB
ADC gain error
1 kHz input, 0 dB PGA gain
0.7
dB
ADC programmable gain
1-kHz input tone, RSOURCE < 50 Ω
59.5
dB
amplifier maximum gain
ADC programmable gain
0.5
dB
amplifier step size
IN1 inputs, routed to single ADC
20
Input mix attenuation = 0 dB
IN2 inputs, input mix attenuation = 0 dB
20
Input resistance
k
IN1 inputs,
80
input mix attenuation = –12 dB
IN2 inputs,
80
input mix attenuation = –12 dB
Input capacitance
IN1 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
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
Sec
MICROPHONE BIAS
2.0
2.25
2.5
2.75
Bias voltage
Programmable settings, load = 750
V
AVDD-
0.2
Current sourcing
2.5 V setting
4
mA
(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.
5
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