DDC114IRTCT Datasheet, PDF (7/35 Pages) Texas Instruments – Quad Current Input, 20-Bit Analog-To-Digital Converter

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DDC114
SBAS255C − JUNE 2004 − REVISED APRIL 2009
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, characterization done with Range 5 (250pC), AVDD = +5V, DVDD = 3V, V_REF = +4.096V, Low Power Mode: T_INT = 400µs and CLK = 4MHz, unless
otherwise noted.
10
All Ranges
I_B vs TEMPERATURE
1
0.1
0.01
25
35
45
55
65
75
85
Temperature (_ C)
OFFSET DRIFT vs TEMPERATURE
100
50
0
−50
−100
25
35
45
55
65
Temperature (_ C)
75
85
ANALOG SUPPLY CURRENT vs TEMPERATURE
14
Low−Power Mode
12
10
8
6
4
2
0
−40
−15
10
35
60
85
Temperature (_C)
POWER CONSUMPTION HISTOGRAM
40
Data collected
35 from multiple lots.
Low−Power Mode
30
25
20
15
10
5
0
Power per Channel (mW)
DIGITAL SUPPLY CURRENT vs TEMPERATURE
1.2
Low Power−Mode
DVDD = 5V
1.0
0.8
0.6
DVDD = 3V
0.4
0.2
0
−40
−15
10
35
60
85
Temperature (_C)
OFFSET DRIFT OVER TIME HISTOGRAM
600
Repeated measurement
of offset drift over a
500 _{one minute interval.}
Range 5
400
300
200
100
0
−1.0 −0.8 −0.6 −0.4 −0.2 0 0.2 0.4 0.6 0.8 1.0
Offset Drift (ppm of FSR/minute)
7