AD7291BCPZ-RL7(Rev0) 데이터 시트보기 (PDF) - Analog Devices
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AD7291BCPZ-RL7 Datasheet PDF : 28 Pages
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AD7291
TYPICAL PERFORMANCE CHARACTERISTICS
0
VDD = VDRIVE = 3V
fS = 22.22ksps
–20 fSCL = 400kHz
fIN = 10kHz
SNR = 71.209
–40 THD = –81.66
–60
–80
–100
–120
0
2k
4k
6k
8k
10k
FREQUENCY (Hz)
Figure 4. Typical FFT
1.0
TA = 25°C
0.8 VDRIVE = 3V
VREF = 2.5V
0.6 VDD = 3V
fS = 22.22ksps
0.4 fSCL = 400kHz
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
500 1000 1500 2000 2500 3000 3500
ADC CODE
Figure 5. Typical ADC INL
4096
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
TA = 25°C
VDRIVE = 3V
VREF = 2.5V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
500 1000 1500 2000 2500 3000 3500
ADC CODE
4096
Figure 6. Typical ADC DNL
1.0
0.8
0.6
0.4
0.2
0
–0.2
TA = 25°C
VDRIVE = 3V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
–0.4
–0.6
–0.8
–1.0
0
INL (POSITIVE)
INL (NEGATIVE)
0.5
1.0
1.5
2.0
2.5
3.0
VREF (V)
Figure 7. INL vs. External VREF
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
TA = 25°C
VDRIVE = 3V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
–0.6
–0.8
–1.0
0
DNL (POSITIVE)
DNL (NEGATIVE)
0.5
1.0
1.5
2.0
2.5
3.0
VREF (V)
Figure 8. DNL vs. External VREF
11.7
11.6
11.5
11.4
11.3
11.2
0
0.5
1.0
1.5
2.0
2.5
EXTERNAL REFERENCE (V)
Figure 9. Effective Number of Bits vs. VREF, fSCL = 400 kHz
Rev. 0 | Page 8 of 28
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