AD7866(Rev0) 查看數據表（PDF） - Analog Devices
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AD7866 Datasheet PDF : 20 Pages
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0
100mV p-p SINEWAVE ON AVDD
–10 2.5V EXT REFERENCE ON VREF
–20 TA = 25؇C
–30
–40
–50
–60
VDD = 2.7V
–70
–80
VDD = 3.6V
–90
–100
1k
10k
100k
1M
AVDD RIPPLE FREQUENCY – Hz
TPC 4a. PSRR vs. Supply Ripple Frequency,
with Supply Decoupling
0
100mV p-p SINEWAVE ON AVDD
–10 2.5V EXT REFERENCE ON DCAPA, DCAPB
–20 TA = 25؇C
–30
–40
–50
–60
VDD = 2.7V
–70
–80
VDD = 3.6V
–90
VDD = 4.75V
–100
1k
10k
100k
1M
AVDD RIPPLE FREQUENCY – Hz
TPC 4b. PSRR vs. Supply Ripple Frequency,
with Supply Decoupling
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
500 1000 1500 2000 2500 3000 3500 4000
ADC – Code
TPC 5. DC DNL Plot
AD7866
1.0
0.8
0.6
0.4
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
0
500 1000 1500 2000 2500 3000 3500 4000
ADC – Code
TPC 6. DC INL Plot
–60
TA = 25؇C
VDD = 4.75V
–65
–70
–75
RIN = 100⍀
RIN = 50⍀
RIN = 10⍀
–80
–85
–90
10k
100k
INPUT FREQUENCY – Hz
1000k
TPC 7. THD vs. Analog Input Frequency
for Various Source Impedances
–70
–72 TA = 25؇C
VDD = VDRIVE = 2.7V
–74
VDD = VDRIVE = 3.6V
–76
–78
–80
–82
–84
VDD = VDRIVE = 5.25V
–86
–88
VDD = VDRIVE = 4.75V
–90
10k
100k
INPUT FREQUENCY – Hz
1000k
TPC 8. THD vs. Analog Input Frequency
for Various Supply Voltages
REV. 0
–9–
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