AD7980-EP Datasheet, PDF (8/12 Pages) Analog Devices – 16-Bit, 1 MSPS PulSAR ADC in MSOP QFN

AD7980-EP
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, V_REF = 5.0 V, VIO = 3.3 V, unless otherwise noted.
1.25
POSITIVE INL: +0.33 LSB
1.00
NEGATIVE INL: –0.39 LSB
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–1.25
0
16384
32768
49152
CODE
Figure 5. Integral Nonlinearity vs. Code, REF = 5 V
65536
1.25
POSITIVE INL: +0.47 LSB
1.00
NEGATIVE INL: –0.26 LSB
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–1.25
0
16384
32768
49152
65536
CODE
Figure 6. Integral Nonlinearity vs. Code, REF = 2.5 V
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
f_S = 1 MSPS
f_IN = 10kHz
SNR = 91.27dB
THD = –114.63dB
SFDR = 110.10dB
SINAD = 91.25dB
100
200
300
400
500
FREQUENCY (kHz)
Figure 7. FFT Plot, REF = 5 V
1.00
POSITIVE INL: +0.18 LSB
NEGATIVE INL: –0.21 LSB
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
16384
32768
49152
65536
CODE
Figure 8. Differential Nonlinearity vs. Code, REF = 5 V
1.00
POSITIVE INL: +0.25 LSB
NEGATIVE INL: –0.22 LSB
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
16384
32768
49152
65536
CODE
Figure 9. Differential Nonlinearity vs. Code, REF = 2.5 V
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
f_S = 1 MSPS
f_IN = 10kHz
SNR = 86.8dB
THD = –111.4dB
SFDR = 105.9dB
SINAD = 86.8dB
100
200
300
400
500
FREQUENCY (kHz)
Figure 10. FFT Plot, REF = 2.5 V
Rev. 0 | Page 8 of 12