参数资料
型号: DDC112U/1K
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 2-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28
封装: GREEN, PLASTIC, SOIC-28
文件页数: 31/34页
文件大小: 776K
代理商: DDC112U/1K
DDC112
6
SBAS085B
www.ti.com
NOISE vs T
INT
1
1000
0.1
100
10
T
INT (ms)
Noise
(ppm
of
FSR,
rms)
0
1
2
3
4
5
6
C
SENSOR = 50pF
C
SENSOR = 0pF
Range 5
TYPICAL CHARACTERISTICS
At TA = +25°C, characterization done with Range 5 (250pC), TINT = 500s, VREF = +4.096, AVDD = DVDD = +5V, and CLK = 10MHz, unless otherwise noted.
NOISE vs C
SENSOR
200
800
0
1000
600
400
C
SENSOR (pF)
Noise
(ppm
of
FSR,
rms)
0
10
20
30
40
50
60
70
Range 7
Range 2
Range 1
Range 0
(C
EXT = 250pF)
NOISE vs INPUT LEVEL
30
40
20
90
10
100
70
80
10
50
60
Input Level (% of Full-Scale)
Noise
(ppm
of
FSR,
rms)
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
C
SENSOR = 50pF
C
SENSOR = 0pF
Range 5
NOISE vs TEMPERATURE
9
8
7
6
5
4
3
2
1
0
–40
–15
10
35
60
85
Temperature (
°C)
Noise
(ppm
of
FSR,
rms)
Range 1
Range 2
Range 7
Range 3
C
SENSOR = 0pF
RANGE DRIFT vs TEMPERATURE
–40
–15
10
35
60
85
Temperature (
°C)
Range
Drift
(ppm)
Ranges 1 - 7
(Internal Integration Capacitor)
2000
1500
1000
500
0
–500
–1000
–1500
I
B vs TEMPERATURE
25
35
45
55
65
75
85
Temperature (°C)
I B
(pA)
All Ranges
10
1
0.1
0.01
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