Datasheet

AD7265
Rev. A | Page 9 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
T = 25°C, unless otherwise noted.
A
04674-003
SUPPLY RIPPLE FREQUENCY (kHz)
20000 200 400 600 800 1000 1200 1400 1600 1800
PSRR (dB)
–60
–70
–80
–90
–100
–110
–120
100mV p-p SINE WAVE ON AV
DD
NO DECOUPLING
SINGLE-ENDED MODE
EXTERNAL REFERENCE
INTERNAL REFERENCE
04674-006
FREQUENCY (kHz)
5000 50 100 150 200 250 300 350 400 450
(dB)
–10
–30
–50
–70
–90
–110
4096 POINT FFT
V
DD
= 5V, V
DRIVE
= 3V
F
SAMPLE
= 1MSPS
F
IN
= 26kHz
SINAD = 71.4dB
THD = –84.42dB
DIFFERENTIAL MODE
Figure 7. FFT
Figure 4. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
04674-007
CODE
40000 1000 2000 3000 3500500 1500 2500
DNL ERROR (LSB)
1.0
0.6
0.8
0.2
0.4
–0.2
0
–0.6
–0.8
–0.4
–1.0
V
DD
= 5V, V
DRIVE
= 3V
DIFFERENTIAL MODE
04674-004
NOISE FREQUENCY (kHz)
10000 100 200 300 400 500 600 800700 900
ISOLATION (dB)
–50
–55
–60
–65
–70
–75
–90
–95
–80
–85
–100
V
DD
= 5V
Figure 8. Typical DNL
Figure 5. Channel-to-Channel Isolation
04674-008
CODE
40000 500 1000 1500 2000 2500 3000 3500
INL ERROR (LSB)
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
V
DD
= 5V, V
DRIVE
= 3V
DIFFERENTIAL MODE
04674-005
INPUT FREQUENCY (kHz)
10000 500
SINAD (dB)
74
72
68
70
66
V
DD
= 5V
DIFFERENTIAL MODE
V
DD
= 3V
DIFFERENTIAL MODE
RANGE = 0 TO V
REF
Figure 6. SINAD vs. Analog Input Frequency for Various Supply Voltages
Figure 9. Typical INL