参数资料
型号: ADS7945SRTET
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC16
封装: GREEN, PLASTIC, QFN-16
文件页数: 13/49页
文件大小: 1322K
代理商: ADS7945SRTET
75
77
79
81
83
85
40 25 10
5
20
35
50
65
80
95
110 125
Free-Air Temperature (°C)
Signaltonoise
and
distortion
(dB)
fIN = 20 kHz
G060
75
77
79
81
83
85
0
20
40
60
80
100
fIN, Input Frequency (kHz)
SignaltoNoise
and
Distortion
(dB)
G062
100
98
96
94
92
90
88
86
84
82
80
2.7
3.2
3.7
4.2
4.7
5.2
5.7
AVDD, Analog Supply Voltage (V)
Total
Harmonic
Distortion
(dB)
fIN = 20 kHz
G067
100
98
96
94
92
90
88
86
84
82
80
2.5
3
3.5
4
4.5
5
5.5
Reference Voltage (V)
Total
Harmonic
Distortion
(dB)
AVDD = 5.25 V
fIN = 20 kHz
G069
100
98
96
94
92
90
88
86
84
82
80
40 25 10
5
20
35
50
65
80
95
110 125
Free-Air Temperature (°C)
Total
Harmonic
Distortion
(dB)
AVDD = 3 V
fIN = 20 kHz
G068
100
98
96
94
92
90
88
86
84
82
80
0
20
40
60
80
100
fIN, Input Frequency (kHz)
Total
Harmonic
Distortion
(dB)
AVDD = 3 V
G070
SBAS539B
– JUNE 2011 – REVISED SEPTEMBER 2011
TYPICAL CHARACTERISTICS: ADS7946 (continued)
At TA = +25°C, AVDD = 5 V, DVDD = 1.8 V, VREF = 2.5 V, and fSAMPLE = 2 MSPS, unless otherwise noted.
SINAD vs FREE-AIR TEMPERATURE
SINAD vs INPUT FREQUENCY
Figure 56.
Figure 57.
THD vs ANALOG SUPPLY VOLTAGE
THD vs REFERENCE VOLTAGE
Figure 58.
Figure 59.
THD vs FREE-AIR TEMPERATURE
THD vs INPUT FREQUENCY
Figure 60.
Figure 61.
20
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s): ADS7945 ADS7946
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