參數(shù)資料
型號： TLC320AD50IDW
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： PLASTIC, SO-28
文件頁數(shù)： 30/56頁
文件大?。?/td> 555K
代理商： TLC320AD50IDW
4–3
4.3.4.2 ADC Signal-to-Distortion (see Note 5 and Figure 5-11)
PARAMETER
TEST CONDITIONS
TLC320AD50C/52C
TLC320AD50I
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VI = – 3 dB (4.25 V)
80
85
79
84
VI = – 9 dB (2.13 V)
79
90
78
89
Signal-to-total harmonic distortion (THD)
VI = – 40 dB (60 mV)
67
72
66
71
dB
VI = – 65 dB (3 mV)
43
48
42
47
VAUX = – 9 dB
79
90
78
89
NOTE 5. The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output are referenced to VDD /2.
4.3.4.3 ADC Signal-to-Distortion + Noise (see Note 5 and Figure 5-12)
PARAMETER
TEST CONDITIONS
TLC320AD50C/52C
TLC320AD50I
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VI = – 3 dB (4.25 V)
78
82
76
80
VI = – 9 dB (2.13 V)
76
80
74
78
Signal-to-total harmonic distortion + noise (THD + N)
VI = – 40 dB (60 mV)
45
49
43
47
dB
VI = – 65 dB (3 mV)
20
24
19
22
VAUX = – 9 dB
76
80
74
78
NOTE 5. The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output are referenced to VDD /2.
4.3.5
ADC Channel Characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI(PP)
Peak-to-peak input voltage
(differential (INP–INM) peak, for full scale operation)
6
V
Dynamic range
VI = – 1 dB (5.35 V)
88
dB
Interchannel isolation
100
dB
EG
Gain error
VI = – 1 dB at 1020 Hz
± 0.3
dB
EO(ADC) ADC converter offset error
5
15
mV
CMRR
Common-mode rejection ratio at INM, INP or AUXM, AUXP
VI = –1 dB at 1020 Hz
74
dB
Idle channel noise (on-chip reference)
VINP, INM = 2.5 V
75
V rms
Ri
Input resistance
TA = 25°C
35
k
Channel delay
17/fs
s
4.3.6
DAC Path Filter, MCLK = 8.192 MHz, fs = 8 kHz (see Note 6, Figures 5-8 and 5-9)
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
–40
≥ 4.4 kHz
–74
NOTE 6: The filter gain outside of the pass band is measured with respect to the 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 6 VI(PP). The pass band
is 0 to 3600 Hz for an 8-kHz sample rate. This pass band scales linearly with the conversion rate.
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