Datasheet

Data Sheet AD7980
Rev. C | Page 9 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, V
REF
= 5.0 V, VIO = 3.3 V, unless otherwise noted.
1.25
–1.25
0
65536
06392-036
CODE
INL (LSB)
1.00
0.75
0.50
0.25
–0.25
–0.75
0
–0.50
–1.00
16384
32768
49152
POSITIVE INL: +0.33 LSB
NEGATIVE INL: –0.39 LSB
Figure 6. Integral Nonlinearity vs. Code, REF = 5 V
1.25
1.00
–1.25
–1.00
0 65536
06392-060
CODE
INL (LSB)
0.75
0.50
0.25
–0.25
–0.75
0
–0.50
16384 32768 49152
POSITIVE INL: +0.47 LSB
NEGATIVE INL: –0.26 LSB
Figure 7. Integral Nonlinearity vs. Code, REF = 2.5 V
0
–180
0 500
06392-038
FREQUENCY (kHz)
AMPLITUDE (dB of FULL SCALE)
–20
–40
–60
–80
–100
–120
–140
–160
100 200 300 400
f
S
= 1 MSPS
f
IN
= 10kHz
SNR = 91.27dB
THD = –114.63dB
SFDR = 110.10dB
SINAD = 91.25dB
Figure 8. FFT Plot, REF = 5 V
1.00
–1.00
0 65536
06392-039
CODE
DNL (LSB)
0.75
0.50
0.25
–0.25
–0.75
0
–0.50
16384 32768 49152
POSITIVE INL: +0.18 LSB
NEGATIVE INL: –0.21 LSB
Figure 9. Differential Nonlinearity vs. Code, REF = 5 V
1.00
–1.00
0
65536
06392-061
CODE
DNL (LSB)
0.75
0.50
0.25
–0.25
–0.75
0
–0.50
16384 32768 49152
POSITIVE INL: +0.25 LSB
NEGATIVE INL: –0.22 LSB
Figure 10. Differential Nonlinearity vs. Code, REF = 2.5 V
0
–180
0 500
06392-058
FREQUENCY (kHz)
AMPLITUDE (dB of FULL SCALE)
–20
–40
–60
–80
–100
–120
–140
–160
100
200 300 400
f
S
= 1 MSPS
f
IN
= 10kHz
SNR = 86.8dB
THD = –111.4dB
SFDR = 105.9dB
SINAD = 86.8dB
Figure 11. FFT Plot, REF = 2.5 V