AD7942BRMZ-RL7 데이터 시트보기 (PDF) - Analog Devices
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AD7942BRMZ-RL7 Datasheet PDF : 24 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
1.00
POSITIVE INL = +0.22LSB
0.75
NEGATIVE INL = –0.34LSB
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
4096
8192
CODE
12,288
Figure 5. Integral Nonlinearity vs. Code
16,384
150,000
129,941
VDD = VREF = 2.5V
100,000
AD7942
1.00
POSITIVE DNL = +0.24LSB
0.75
NEGATIVE DNL = –0.12LSB
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
4096
8192
CODE
12,288
Figure 8. Differential Nonlinearity vs. Code
16,384
150,000
131,072
VDD = VREF = 5V
100,000
50,000
0
0
1FFD
0
1FFE
915
216
1FFF 2000 2001
CODE IN HEX
0
2002
0
2003
Figure 6. Histogram of a DC Input at the Code Center
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
16,384 POINT FFT
VDD = VREF = 5V
fS = 250kSPS
fIN = 20.43kHz
SNR = 85.1dB
THD = –105dB
SFDR = –105.9dB
25
50
75
100
125
FREQUENCY (kHz)
Figure 7. FFT Plot
50,000
0
0
1FFD
0
1FFE
0
0
1FFF 2000 2001
CODE IN HEX
0
2002
0
2003
Figure 9. Histogram of a DC Input at the Code Center
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
16,384 POINT FFT
VDD = VREF = 2.5V
fS = 250kSPS
fIN = 20.43kHz
SNR = 84.2dB
THD = –101.7dB
SFDR = –104.3dB
25
50
75
100
125
FREQUENCY (kHz)
Figure 10. FFT Plot
Rev. B | Page 9 of 24
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