參數(shù)資料
型號(hào)： TLV320AIC23BGQER
廠商： Texas Instruments, Inc.
元件分類： Codec
英文描述： STEREO AUDIO CODEC 8 TO 96 KHZ WITH INTEGRATED HEADPHONE AMPLIFIER
中文描述： 立體聲音頻編解碼8至96與集成耳機(jī)放大器KHZ可
文件頁數(shù)： 14/50頁
文件大?。?/td> 499K
代理商： TLV320AIC23BGQER
22
2.3
Electrical Characteristics Over Recommended Operating Conditions, AV
DD
,
HPV
DD
, BV
DD
= 3.3 V, DV
DD
= 1.5 V, Slave Mode, XTI/MCLK = 256fs, f
s
= 48 kHz
(unless otherwise stated)
2.3.1
ADC
2.3.1.1 Line Input to ADC
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input signal level (0 dB)
1
VRMS
Signal-to-noise ratio, A-weighted, 0-dB gain (see Notes 3
and 4)
fs = 48 kHz (3.3 V)
fs = 48 kHz (2.7 V)
85
90
dB
90
Dynamic range, A-weighted, 60-dB full-scale input (see
Note 4)
AVDD = 3.3 V
AVDD = 2.7 V
AVDD = 3.3 V
AVDD = 2.7 V
1 kHz, 100 mVpp
1 kHz input tone
1 kHz input tone, RSOURCE < 50
Monotonic
85
90
dB
90
Total harmonic distortion, 1-dB input, 0-dB gain
–80
dB
80
Power supply rejection ratio
50
dB
ADC channel separation
90
dB
Programmable gain
–34.5
12
dB
Programmable gain step size
1.5
dB
Mute attenuation
0 dB, 1 kHz input tone
80
dB
Input resistance
12 dB Input gain
10
20
k
0 dB input gain
30
35
Input capacitance
NOTES:
10
pF
3. Ratio of output level with 1-kHz full-scale input, to the output level with the input short circuited, measured A-weighted over a 20-Hz
to 20-kHz bandwidth using an audio analyzer.
4. All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter
results 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.
2.3.1.2 Microphone Input to ADC, 0-dB Gain, f
s
= 8 kHz (40-K
Source Impedance, see Section 1.2,
Functional Block Diagram
)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input signal level (0 dB)
1.0
VRMS
Signal-to-noise ratio, A-weighted, 0-dB gain (see Notes 3 and 4)
AVDD = 3.3 V
AVDD = 2.7 V
AVDD = 3.3 V
AVDD = 2.7 V
AVDD = 3.3 V
AVDD = 2.7 V
1 kHz, 100 mVpp
1 kHz input tone, RSOURCE < 50
MICBOOST = 0, RSOURCE < 50
0 dB, 1 kHz input tone
80
85
dB
84
Dynamic range, A-weighted, 60-dB full-scale input (see Note 4)
80
85
dB
84
Total harmonic distortion, 1-dB input, 0-dB gain
–60
dB
60
Power supply rejection ratio
50
dB
Programmable gain boost
20
dB
Microphone-path gain
14
dB
Mute attenuation
60
80
dB
k
pF
Input resistance
8
14
Input capacitance
NOTES:
10
3. Ratio of output level with 1-kHz full-scale input, to the output level with the input short circuited, measured A-weighted over a 20-Hz
to 20-kHz bandwidth using an audio analyzer.
4. All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter
results 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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