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ADS7866 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
ADS7866 1.2-V, 12-/10-/8-BIT, 200-KSPS/100-KSPS, MICRO-POWER, MINIATURE ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE TI
Texas Instruments TI
ADS7866 Datasheet PDF : 28 Pages
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ADS7866
ADS7867
ADS7868
SLAS465 – JUNE 2005
TYPICAL CHARACTERISTICS ADS7866 (continued)
www.ti.com
SPURIOUS FREE DYNAMIC RANGE
vs
INPUT FREQUENCY
84
VDD = 3.6V,
82
200 KSPS
80
VDD = 2.5V,
78
200 KSPS
76
74
72
70
68
VDD = 1.2 V, 100 KSPS
VDD = 1.6 V,
200 KSPS
66
64
62
1
10
100
1000
fi − Input Frequency − kHz
Figure 7.
SUPPLY CURRENT
vs
SCLK FREQUENCY
325
VDD = 3.6 V
300
VDD = 3 V
TA = 25°C,
fSAMPLE = 100 KSPS
275
VDD = 2.5 V
VDD = 1.8 V
250
VDD = 1.6 V
225
200
175
150
125
100
1.6 1.8
2 2.2 2.4 2.6 2.8 3
SCLK Frequency − MHz
3.2 3.4
Figure 8.
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
425
fSAMPLE = 200 KSPS,
400 fSCLK = 3.4 MHz
TA = 855C
375
TA = 255C
350
TA = −405C
325
300
275
250
225
200
1.6 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6
VDD − Supply Voltage − V
Figure 9.
POWER CONSUMPTION
vs
THROUGHPUT
TOTAL HARMONIC DISTORTION
vs
INPUT FREQUENCY
1.4
TA = 25°C,
SCLK = 3.4 MHz
1.2
VDD = 3.6 V
VDD = 3 V
1
VDD = 2.5 V
0.8
VDD = 1.8 V
VDD = 1.6 V
0.6
0.4
0.2
0
20 40 60 80 100 120 140 160 180 200
Throughput − KSPS
−58
−60
VDD = 1.6 V,
TA = 25°C,
−62 fSAMPLE = 200 KSPS,
fSCLK = 3.4 MHz
−64
−66
−68
−70
−72
RI = 100 W
−74
RI = 500 W
−76
RI = 1000 W
−78
−80 RI = 0 W
−82
−84
1
RI = 10 W
10
100
fi − Input Frequency − kHz
1000
Figure 10.
Figure 11.
1
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1
0
VDD = 1.6 V,
TA = 25°C,
fSAMPLE = 200 KSPS,
fSCLK = 3.4 MHz
512
1024
INL
1536
2048
2560
Code
(Straight Binary in Decimal)
Figure 12.
3072
3584
4096
12
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