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參數資料
| 型號： | TLV320AIC14C |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO30 |
| 封裝： | PLASTIC, TSSOP-30 |
| 文件頁數： | 36/54頁 |
| 文件大?。?/td> | 450K |
| 代理商： | TLV320AIC14C |
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5–4
5.6
DAC Path Digital Filter, fs = 8 kHz (see Note 4)
5.6.1
FIR Filter
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
0 to 300 Hz
–0.5
0.2
300 Hz to 3 kHz
–0.25
0.25
Filter gain relati e to gain at 1020 H
3.3 kHz
–0.35
0.3
dB
Filter gain relative to gain at 1020 Hz
3.6 kHz
–3
dB
4 kHz
–40
≥4.4 kHz
–74
5.6.2
IIR Filter
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
0 to 300 Hz
–0.5
0.2
300 Hz to 3 kHz
–0.25
0.25
Filter gain relative to gain at 1020 Hz
3.3 kHz
–0.35
0.3
dB
Filter gain relative to gain at 1020 Hz
3.6 kHz
–3
dB
4 kHz
–20
≥4.4 kHz
–60
NOTE 4: Filter gain outside of the bandpass is measured with respect to gain at 1020 Hz. The input signal is the digital equivalent of a sine wave
(digital full scale = 0 dB). The nominal differential DAC channel output with this input condition is 4 VI(PP). The pass band is 0 Hz to 3600
Hz for an 8-kHz sample rate. This pass band scales linearly with the conversion rate.
5.7
DAC Dynamic Performance
5.7.1
OUTP/OUTM Signal-to-Noise When Load Is 600
(see Note 5)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = 0 dB
80
92
SNR
Signal-to-noise ratio (SNR)
VI = –9 dB
75
83
dB
SNR
Signal to noise ratio (SNR)
VI = –40 dB
40
51
dB
NOTE 5: Test condition is the digital equivalent of a 1020-Hz input signal with an 8-kHz conversion rate. The test is measured at the output of
the application schematic low-pass filter. The test is conducted in 16-bit mode.
5.7.2
OUTP/OUTM Signal-to-Distortion When Load Is 600
(see Note 5)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = –0 dB
78
85
THD
Total harmonic distortion
VI = –9 dB
74
83
THD
Total harmonic distortion
VI = –40 dB
59
62
NOTE 5: Test condition is the digital equivalent of a 1020-Hz input signal with an 8-kHz conversion rate. The test is measured at the output of
the application schematic low-pass filter. The test is conducted in 16-bit mode.
5.7.3
OUTP/OUTM Signal-to-Distortion + Noise When Load Is 600
(see Note 5)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = –0 dB
75
82
Signal-to-total harmonic distortion + noise (THD + N)
VI = –9 dB
70
77
dB
Signal to total harmonic distortion + noise (THD + N)
VI = –40 dB
34
44
dB
NOTE 5: Test condition is the digital equivalent of a 1020-Hz input signal with an 8-kHz conversion rate. The test is measured at the output of
the application schematic low-pass filter. The test is conducted in 16-bit mode.
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