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AD7993 Datasheet(PDF) 12 Page - Analog Devices

Part # AD7993
Description  4-Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7993 Datasheet(HTML) 12 Page - Analog Devices

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AD7993/AD7994
Rev. 0 | Page 12 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
–120
–100
–80
–60
–40
–20
0
20
40
060
FREQUENCY (kHz)
FS = 121kSPS
FSCL = 3.4MHz
FIN = 10kHz
SNR = 71.84dB
SINAD = 71.68dB
THD = 86.18dB
SFDR = –88.70dB
Figure 4. AD7994 Dynamic Performance with 5 V Supply and
2.5 V Reference, 121 kSPS, Mode 1
–110
–90
–70
–50
–30
–10
10
40
060
40
45
50
60
70
75
1
1000
FREQUENCY (kHz)
100
10
VDD = 5.5V
VDD = 4.5V
VDD = 3V
VDD = 2.7V
VDD = 3.3V
VDD = 5V
65
55
FREQUENCY (kHz)
20
30
50
FS = 121kSPS
FSCL = 3.4MHz
FIN = 10kHz
SINAD = 61.63dB
THD = 91.82dB
SFDR = –94.95dB
Figure 5. AD7993 Dynamic Performance with 5 V Supply and
2.5 V Reference, 121 kSPS, Mode 1
20
40
70
80
90
100
10
1000
SUPPLY RIPPLE FREQUENCY (kHz)
100
VDD = 3V
VDD = 5V
50
30
60
VDD = 3V/5V

200mV p-p SINE WAVE
ON VDD
2nF CAPACITOR ON VDD
Figure 6. PSRR vs. Supply Ripple Frequency
Figure 7. AD7994 SINAD vs. Analog Input Frequency for
Various Supply Voltages, 3.4 MHz fSCL, 136 kSPS
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
2000
1500
500
1000
0
2500
3000
3500
4000
CODE
Figure 8. AD7994 Typical INL, VDD = 5.5 V, Mode 1, 3.4 MHz fSCL, 121 kSPS
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
2000
1500
500
1000
0
2500
3000
3500
4000
CODE
Figure 9. AD7994 Typical DNL, VDD = 5.5 V, Mode 1, 3.4 MHz fSCL, 121 kSPS



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