AD7999 데이터 시트보기 (PDF) - Analog Devices
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AD7999 Datasheet PDF : 28 Pages
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AD7991/AD7995/AD7999
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
VDD = 5V
VREF = 2.5V
fSCL = 1.7MHz
–1.0
0 500 1000
1500
2000 2500
CODE
3000
3500
4000
Figure 10. DNL Error, VDD = 5 V, VREF = 2.5 V, fSCL = 1.7 MHz
Without Clock Stretching
800
fSCL = 1.7MHz
600
+125°C
+85°C
+25°C
–40°C
400
200
0
2
3
4
5
6
VDD (V)
Figure 11. IDD Supply Current vs. Supply Voltage, fSCL = 1.7 MHz
Without Clock Stretching, −40°C to +125°C
1000
fSCL = 3.4MHz
800
600
+125°C
+85°C
+25°C
–40°C
400
200
0
2
3
4
5
6
VDD (V)
Figure 12. IDD Supply Current vs. Supply Voltage, f SCL = 3.4 MHz
with Clock Stretching, −40°C to +125°C
–70
fSCL = 1.7MHz
–80
VDD = 5V
VDD = 3V
–90
–100
1
10
100
INPUT FREQUENCY (kHz)
Figure 13. THD vs. Input Frequency, VREF = 2.5 V, fSCL = 1.7 MHz
Without Clock Stretching
96
95
VDD = 3V
94
93
92
VDD = 5V
91
90 VREF = VDD
fSCL = 1.7MHz
TEMPERATURE = TA
89
0 10 20 30 40 50 60 70 80 90 100
fNOISE (kHz)
Figure 14. AD7991 Channel-to-Channel Isolation , fSCL = 1.7 MHz
Without Clock Stretching
0
16384 POINT FFT
fS = 22.5kSPS
–20
fSCL = 405kHz
fIN = 5.13kHz
SNR = 71.83dB
SINAD = 71.39dB
–40
THD = –81.26dB
SFDR = –93.71dB
–60
–80
–100
–120
0
2
4
6
8
10
FREQUENCY (kHz)
Figure 15. Dynamic Performance, fSCL = 405 kHz
Without Clock Stretching, VDD = 5 V, Full-Scale Input,
Seven-Term Blackman-Harris Window
Rev. A | Page 14 of 28
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