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參數資料
型號: TLV320AIC14I
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: 35/54頁
文件大小: 450K
代理商: TLV320AIC14I
5–3
5.5
ADC Dynamic Performance, fs = 8 kHz
5.5.1
ADC Signal-to-Noise (see Note 3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = –1 dB
82
88
SNR
Signal-to-noise ratio (SNR)
VI = –9 dB
79
82
dB
SNR
Signal to noise ratio (SNR)
VI = –40 dB
43
46
dB
NOTE 3: Test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output common mode is 1.35 V.
5.5.2
ADC Signal-to-Distortion (see Note 3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = –1 dB
85
90
THD
Total harmonic distortion
VI = –9 dB
82
88
dB
THD
Total harmonic distortion
VI = –40 dB
67
dB
NOTE 3: Test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output common mode is 1.35 V.
5.5.3
ADC Signal-to-Distortion + Noise (see Note 3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI = –1 dB
79
87
Signal-to-total harmonic distortion + noise (THD + N)
VI = –9 dB
73
79
dB
Signal to total harmonic distortion + noise (THD + N)
VI = –40 dB
42
48
dB
NOTE 3: Test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output common mode is 1.35 V.
5.5.4
ADC Channel Characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI(PP)
Single–ended input level
Preamp gain = 6 dB
2
V
VIO
Input offset voltage
MICIN INPx INMx
±10
mV
IB
Input bias current
MICIN, INPx, INMx
34
A
Common-mode voltage
1.35
V
Dynamic range
VI = –1 dB
85
dB
Mute attenuation
PGA = MUTE
80
dB
Intrachannel isolation
87
dB
EG
Gain error
VI = –1 dB at 1020 Hz
0.6
dB
EO(ADC)
ADC converter offset error
±10
mV
CMRR
Common-mode rejection ratio at INMx and INPx
VI = –100 mVpp at 1020 Hz
50
dB
Idle channel noise
VINP,INM,MICIN = 0 V
50
100
Vrns
ri
Input resistance
MICIN INPx INMx T
25
°C
30
k
Ci
Input capacitance
MICIN, INPx, INMx, TA = 25°C
2
pF
Channel delay
IIR
5/fs
s
Channel delay
FIR
17/fs
s
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