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| 型號(hào)： | EVAL-AD7920CBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7920 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 250k |
| 數(shù)據(jù)接口： | 串行 |
| 輸入范圍： | 0 ~ Vdd |
| 在以下條件下的電源（標(biāo)準(zhǔn)）： | 12.5mW @ 250kSPS，5V |
| 工作溫度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7920 |
| 已供物品： | 板，CD |
| 相關(guān)產(chǎn)品： | AD7920BKSZ-500RL7TR-ND - IC ADC 12BIT SRL 250KSPS SC70-6 AD7920AKSZ-REEL7-ND - IC ADC 12BIT SRL 250KSPS SC70-6 AD7920AKSZ-500RL7TR-ND - IC ADC 12BIT SRL 250KSPS SC70-6 AD7920BRMZ-REEL7-ND - IC ADC 12BIT SRL 250KSPS 8MSOP AD7920BKSZ-REEL7-ND - IC ADC 12BIT SRL 250KSPS SC70-6 AD7920BKSZ-REEL-ND - IC ADC 12BIT SRL 250KSPS SC70-6 AD7920BRMZ-REEL-ND - IC ADC 12BIT SRL 250KSPS 8MSOP AD7920BRMZ-ND - IC ADC 12BIT 250KSPS 8-MSOP |
AD7910/AD7920
Rev. C | Page 10 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
AD7910, respectively, at a 250 kSPS sampling rate and a 100 kHz
input frequency.
Figure 9 shows the signal-to-(noise + distortion) ratio performance
vs. input frequency for various supply voltages while sampling at
250 kSPS with an SCLK frequency of 5 MHz for the AD7920.
for the AD7920.
Figure 12 shows a graph of the total harmonic distortion vs. analog
input frequency for different source impedances when using a
supply voltage of 3.6 V and sampling at a rate of 250 kSPS. See the
Analog Input section.
Figure 13 shows a graph of the total harmonic distortion vs.
analog input signal frequency for various supply voltages while
sampling at 250 kSPS with an SCLK frequency of 5 MHz.
FREQUENCY (kHz)
–5
–55
–115
0
125
25
S
NR
(dB)
50
75
100
–15
–35
–75
–95
8192 POINT FFT
VDD = 2.7V
fSAMPLE = 250kSPS
fIN = 100kHz
SINAD = 72.05dB
THD = –82.87dB
SFDR = –87.24dB
02976-007
Figure 7. AD7920 Dynamic Performance at 250 kSPS
FREQUENCY (kHz)
–45
–105
S
NR
(dB)
–5
15
–25
–65
–85
0
125
25
50
75
100
02976-008
8192 POINT FFT
VDD = 2.35V
fSAMPLE = 250kSPS
fIN = 100kHz
SINAD = 61.67dB
THD = –79.59dB
SFDR = –82.93dB
Figure 8. AD7910 Dynamic Performance at 250 kSPS
FREQUENCY (kHz)
–72.0
10
1000
S
INAD
(dB)
100
–73.0
–73.5
VDD = 5.25V
VDD = 2.35V
VDD = 2.7V
VDD = 4.75V V
DD = 3.6V
–72.5
–71.0
–71.5
02976-009
Figure 9. AD7920 SINAD vs. Input Frequency at 250 kSPS
CODE
1.0
0.4
–0.2
0
1024
INL
E
RROR
(LS
B
)
512
0.8
0.6
0.2
0
–0.4
–0.6
–0.8
–1.0
1536
2048
2560
3072
3584
4096
VDD = 2.35V
TEMP = 25
°C
fSAMPLE = 250kSPS
02976-010
Figure 10. AD7920 INL Performance
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