Datasheet

Data Sheet ADuC7124/ADuC7126
Rev. C | Page 25 of 108
20
0
–20
–40
–60
–80
–100
–120
–140
0 50 100 150 174.1
09123-216
SINAD, THD, AND PHSN OF ADC (dB)
FREQUENCY (kHz)
SNR: 69.85dB
THD: –79.91dB
PHSN: –82.93dB, 29.771kHz
20
0
–20
–40
–60
–80
–100
–120
–140
0 50 100 150 174.1
09123-219
SINAD, THD, AND PHSN OF ADC (dB)
FREQUENCY (kHz)
SNR: 65.97dB
THD: –78.63dB
PHSN: –77.83dB, 146.6038kHz
Figure 17. SINAD, THD, and PHSN of ADC,
V
REF
= Internal 2.5 V, Single-Ended Mode
ADCCP = ADC0
Figure 20. SINAD, THD, and PHSN of ADC,
V
REF
= Internal 2.5 V, Single-Ended Mode
ADCCP = ADC15/DAC3, ADCCN = ADC0
0.2
0.1
0
–0.1
–0.2
250
09123-220
DNL (LSB)
ADC CODES
500 750
1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 4095
DAC0
DAC1
20
0
–20
–40
–60
–80
–100
–120
–140
0 50 100 150 174.1
09123-217
SINAD, THD, AND PHSN OF ADC (dB)
FREQUENCY (kHz)
SNR: 67.10dB
THD: –79.79dB
PHSN: –76.14dB, 54.9738kHz
Figure 21. DAC DNL Error,
DAC0 Max Positive DNL: 0.188951, DAC1 Max Positive DNL: 0.190343
DAC0 Max Negative DNL: −0.120081, DAC1 Max Negative DNL: −0.15697
Figure 18. SINAD, THD, and PHSN of ADC,
V
REF
= Internal 2.5 V, Single-Ended Mode
ADCCP = DAC1/ADC13, ADCCN = ADC0
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
250
09123-221
INL (LSB)
ADC CODES
500 750
1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 4095
DAC0
DAC1
20
0
–20
–40
–60
–80
–100
–120
–140
0 50 100 150 174.1
09123-218
SINAD, THD, AND PHSN OF ADC (dB)
FREQUENCY (kHz)
SNR: 67.44dB
THD: –82.33dB
PHSN: –79.31dB, 54.9738kHz
Figure 22. DAC INL Error,
DAC0 Max Positive INL: 1.84106, DAC1 Max Positive INL: 1.75312
DAC0 Max Negative INL: −0.887319, DAC1 Max Negative INL: −2.23708
Figure 19. SINAD, THD, and PHSN of ADC,
V
REF
= Internal 2.5 V, Single-Ended Mode
ADCCP = ADC8, ADCCN = ADC0