AD7980 Analog Devices, AD7980 Datasheet - Page 9

• Manufacturer Part Number: AD7980
• Manufacturer: Analog Devices

Specifications of AD7980

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

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