AD7927 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD7927 Datasheet PDF : 29 Pages
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AD7927
TYPICAL PERFORMANCE CHARACTERISTICS
4096 POINT FFT
AVDD = 4.75V
–10
fSAMPLE = 200kSPS
fIN = 50kHz
SINAD = 70.714dB
–30
THD = –82.853dB
SFDR = –84.815dB
–50
–70
–90
–110
0
10 20 30 40 50 60 70 80 90 100
FREQUENCY (kHz)
Figure 4. Dynamic Performance at 200 kSPS
Data Sheet
0
AVDD = 5V
–10 200mV p-p SINE WAVE ON AVDD
REFIN = 2.5V, 1µF CAPACITOR
–20 TA = 25°C
–30
–40
–50
–60
–70
–80
–90
0
20 40 60 80 100 120 140 160 180 200
SUPPLY RIPPLE FREQUENCY (kHz)
Figure 6. PSRR vs. Supply Ripple Frequency
75
AVDD = VDRIVE = 5.25V
AVDD = VDRIVE = 4.75V
70
AVDD = VDRIVE = 3.6V
AVDD = VDRIVE = 2.7V
65
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0 TO REFIN
60
0
100
INPUT FREQUENCY (kHz)
Figure 5. SINAD vs. Analog Input Frequency for Various Supply Voltages
at 200 kSPS
–50
fSAMPLE = 200kSPS
–55 TA = 25°C
RANGE = 0 TO REFIN
–60
–65
–70
AVDD = VDRIVE = 2.7V
–75
AVDD = VDRIVE = 3.6V
–80
–85
–90
10
AVDD = VDRIVE = 4.75V
AVDD = VDRIVE = 5.25V
100
INPUT FREQUENCY (kHz)
Figure 7. THD vs. Analog Input Frequency for Various Supply Voltages
at 200 kSPS
Rev. D | Page 10 of 28
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