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參數資料
| 型號： | TLV320A23BIRHDRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC28 |
| 封裝： | GREEN, PLASTIC, QFN-28 |
| 文件頁數： | 5/54頁 |
| 文件大小： | 795K |
| 代理商： | TLV320A23BIRHDRG4 |
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22
2.3
Electrical Characteristics Over Recommended Operating Conditions, AVDD,
HPVDD, BVDD = 3.3 V, DVDD = 1.5 V, Slave Mode, XTI/MCLK = 256fs, fs = 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
fs = 48 kHz (3.3 V)
85
90
dB
Signal-to-noise ratio, A-weighted, 0-dB gain (see Notes 3
and 4)
fs = 48 kHz (2.7 V)
90
dB
Dynamic range, A-weighted, 60-dB full-scale input (see
AVDD = 3.3 V
85
90
dB
Dynamic range, A-weighted, 60-dB full-scale input (see
Note 4)
AVDD = 2.7 V
90
dB
Total harmonic distortion, 1-dB input, 0-dB gain
AVDD = 3.3 V
–80
dB
Total harmonic distortion, 1-dB input, 0-dB gain
AVDD = 2.7 V
80
dB
Power supply rejection ratio
1 kHz, 100 mVpp
50
dB
ADC channel separation
1 kHz input tone
90
dB
Programmable gain
1 kHz input tone, RSOURCE < 50
–34.5
12
dB
Programmable gain step size
Monotonic
1.5
dB
Mute attenuation
0 dB, 1 kHz input tone
80
dB
Input resistance
12 dB Input gain
10
20
k
Input resistance
0 dB input gain
30
35
k
Input capacitance
10
pF
NOTES:
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, fs = 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
80
85
dB
Signal-to-noise ratio, A-weighted, 0-dB gain (see Notes 3 and 4)
AVDD = 2.7 V
84
dB
Dynamic range, A-weighted, 60-dB full-scale input (see Note 4)
AVDD = 3.3 V
80
85
dB
Dynamic range, A-weighted, 60-dB full-scale input (see Note 4)
AVDD = 2.7 V
84
dB
Total harmonic distortion, 1-dB input, 0-dB gain
AVDD = 3.3 V
–60
dB
Total harmonic distortion, 1-dB input, 0-dB gain
AVDD = 2.7 V
60
dB
Power supply rejection ratio
1 kHz, 100 mVpp
50
dB
Programmable gain boost
1 kHz input tone, RSOURCE < 50
20
dB
Microphone-path gain
MICBOOST = 0, RSOURCE < 50
14
dB
Mute attenuation
0 dB, 1 kHz input tone
60
80
dB
Input resistance
8
14
k
Input capacitance
10
pF
NOTES:
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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