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: 6/49页
文件大小: 1322K
代理商: ADS7945SRTET
80
84
88
92
96
100
2.7
3.2
3.7
4.2
4.7
5.2
5.7
AVDD, Analog Supply Voltage (V)
Spurious
Free
Dynamic
Range
(dB)
fIN = 20 kHz
G026
80
84
88
92
96
100
2.5
3
3.5
4
4.5
5
5.5
Reference Voltage (V)
Spurious
Free
Dynamic
Range
(dB)
AVDD = 5.25 V
fIN = 20 kHz
G028
80
84
88
92
96
100
40 25 10
5
20
35
50
65
80
95
110 125
Free-Air Temperature (°C)
Spurious
Free
Dynamic
Range
(dB)
AVDD = 3 V
fIN = 20 kHz
G027
80
84
88
92
96
100
0
20
40
60
80
100
fIN, Input Frequency (kHz)
Spurious
Free
Dynamic
Range
(dB)
AVDD = 3 V
G029
120
115
110
105
100
95
90
85
80
0
20
40
60
80
100
Memory CrossTalk
Isolation Crosstalk
fIN, Input Frequency (kHz)
Crosstalk
(dB)
G034
2.5
3
3.5
4
4.5
5
2.7
3.2
3.7
4.2
4.7
5.2
5.7
AVDD, Analog Supply Voltage (V)
AVDD
Dynamic
Current
(mA)
G001
SBAS539B
– JUNE 2011 – REVISED SEPTEMBER 2011
TYPICAL CHARACTERISTICS: ADS7945 (continued)
At TA = +25°C, AVDD = 5 V, DVDD = 1.8 V, VREF = 2.5 V, and fSAMPLE = 2 MSPS, unless otherwise noted.
SFDR vs ANALOG SUPPLY VOLTAGE
SFDR vs REFERENCE VOLTAGE
Figure 25.
Figure 26.
SFDR vs FREE-AIR TEMPERATURE
SFDR vs INPUT FREQUENCY
Figure 27.
Figure 28.
ANALOG SUPPLY CURRENT (Dynamic)
CROSSTALK vs INPUT FREQUENCY
vs ANALOG SUPPLY VOLTAGE
Figure 29.
Figure 30.
14
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s): ADS7945 ADS7946
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