參數(shù)資料
型號(hào)： TLC320AD50CPTR
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP48
封裝： PLASTIC, QFP-48
文件頁(yè)數(shù)： 29/56頁(yè)
文件大小： 555K
代理商： TLC320AD50CPTR
4–2
4.3
Electrical Characteristics Over Recommended Operating Free-Air Temperature
Range, DVDD = 5 V, RL = 600 (Unless Otherwise Noted)
4.3.1
Digital Inputs and Outputs, MCLK = 8.192 MHz, fs = 8 kHz, DVDD = 5 V
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High-level output voltage, DOUT
IO = 360 A
4
5
V
VOL
Low-level output voltage, DOUT
IO = – 2 mA
0.2
0.4
V
IIH
High-level input current, any digital input
VIH = 5 V
10
A
IIL
Low-level input current, any digital input
VIL = 0.8 V
10
A
Ci
Input capacitance
5
pF
Co
Output capacitance
5
pF
4.3.2
Digital Inputs and Outputs, MCLK = 8.192 MHz, fs = 8 kHz, DVDD = 3 V
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
High-level output voltage, DOUT
IO = 360 A
2.4
3
V
VOL
Low-level output voltage, DOUT
IO = – 2 mA
0.2
0.4
V
IIH
High-level input current, any digital input
VIH = 3 V
10
A
IIL
Low-level input current, any digital input
VIL = 0.6 V
10
A
Ci
Input capacitance
5
pF
Co
Output capacitance
5
pF
4.3.3
ADC Channel, MCLK = 8.192 MHz, fs = 8 kHz (see Note 4, Figures 5-6 and 5-7)
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 4: The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The analog input test signal is a sine wave with
0 dB = 4 VPP as the reference level for the analog input signal. The passband is 0 to 3600 Hz for an 8-kHz sample rate. This passband
scales linearly with the sample rate.
4.3.4
ADC Dynamic Performance, MCLK = 8.192 MHz, fs = 8 kHz
4.3.4.1 ADC Signal-to-Noise (see Note 5 and Figure 5-10)
PARAMETER
TEST CONDITIONS
TLC320AD50C/52C
TLC320AD50I
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VI = – 1 dB (5.35 V)
85
89
83
87
VI = – 9 dB (2.13 V)
77
81
75
79
Signal-to-noise ratio (SNR)
VI = – 40 dB (60 mV)
46
50
44
48
dB
VI = – 65 dB (3 mV)
21
25
19
23
VAUX = – 9 dB
77
81
75
79
NOTE 5: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output are referenced to AVDD /2.
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