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TLV320AIC26 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. TLV320AIC26
Description  LOW POWER STEREO AUDIO CODEC WITH HEADPHONE/SPEAKER AMPLIFIER AND 12-BIT BATTERY / TEMPERATURE / AUXILIARY ADC
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TLV320AIC26 Datasheet(HTML) 4 Page - Texas Instruments

 
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TLV320AIC26
SLAS412− DECEMBER 2003
www.ti.com
4
ELECTRICAL CHARACTERISTICS
At +25
°C, AVDD,DRVDD,IOVDD = 3.3 V, DVDD = 1.8 V, Int. Vref = 2.5 V, Fs (Audio) = 48 kHz, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
BATTERY MONITOR INPUTS
Input voltage range
0.5
6.0
V
Input leakage current
Battery conversion not selected
±1
µA
AUXILIARY A/D CONVERTER
Resolution
Programmable: 8-, 10-,12-bits
12
Bits
No missing codes
12-bit resolution
11
Bits
Integral nonlinearity
−5
5
LSB
Offset error
−6
6
LSB
Gain error
Calculated with effect of internal reference
variation removed.
−6
6
LSB
Noise
53
µVrms
AUDIO CODEC
ADC DECIMATION FILTER
Sample rate of 48 ksps
Filter gain from 0 to 0.39Fs
±0.1
dB
Filter gain at 0.4125Fs
−0.25
dB
Filter gain at 0.45Fs
−3
dB
Filter gain at 0.5Fs
−17.5
dB
Filter gain from 0.55Fs to 64Fs
−75
dB
Filter group delay
17/Fs
sec
MICROPHONE INPUT TO ADC
1 kHz sine wave input, Fs = 48 ksps
Full scale input voltage (0 dB)
By design, not tested in production
0.707
Vrms
Input common mode
By design, not tested in production
1.35
V
SNR
Measured as idle channel noise, 0-dB gain,
A-weighted
80
92
dBA
THD
0.63-Vrms input, 0-dB gain
−89
−72
dB
PSRR
1 kHz, 100 mVpp on AVDD.(1)
57
dB
Mute attenuation
Output code with 0.63-Vrms sine wave input at
1 kHz
0000H
Input resistance
20
k
Input capacitance
10
pF
MICROPHONE BIAS
Voltage
D4 = 0 control register 05H/Page2
2.5
V
Voltage
D4 = 1 control register 05H/Page2
2.0
V
Sourcing current
4.7
mA
(1) ADC PSRR measurement is calculated as:
PSRR
+ 20 log
10
VSIGsup
V
ADCOUT


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