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AD7680BRJZ-R2 数据表(PDF) 10 Page - Analog Devices

部件名 AD7680BRJZ-R2
功能描述  3 mW, 100 kSPS, 16-Bit ADC in 6-Lead SOT-23
PDF  24 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7680BRJZ-R2 数据表(HTML) 10 Page - Analog Devices

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AD7680
Rev. A | Page 10 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 5 shows a typical FFT plot for the AD7680 at 100 kSPS
sample rate and 10 kHz input frequency. Figure 6 shows the
signal-to-(noise + distortion) ratio performance versus the
input frequency for various supply voltages while sampling at
100 kSPS with an SCLK of 2.5 MHz.
Figure 7 shows a graph of the total harmonic distortion versus
the analog input frequency for various supply voltages, while
Figure 8 shows a graph of the total harmonic distortion versus
the analog input frequency for various source impedances (see
the Analog Input section). Figure 9 and Figure 10 show the
typical INL and DNL plots for the AD7680.
–140
–120
–100
–80
–60
–40
–20
–160
0
10k
20k
30k
40k
FREQUENCY (kHz)
50k
0
VDD = 5V
FSAMPLE = 100kSPS
FIN = 10kHz
SNR = 88.28dB
SINAD = 87.82dB
THD = –97.76dB
SFDR = –98.25dB
Figure 5. AD7680 Dynamic Performance at 100 kSPS
80
10
INPUT FREQUENCY (kHz)
100
85
90
95
VDD = 2.5V
VDD = 5.25V
VDD = 4.75V
VDD = 4.3V
VDD = 3.6V
VDD = 3.0V
VDD = 2.7V
FSAMPLE = 100kSPS
TA = 25°C
Figure 6. AD7680 SINAD vs. Analog Input Frequency
for Various Supply Voltages at 100 kSPS
90
10
INPUT FREQUENCY (kHz)
100
100
95
105
110
VDD = 4.75V
VDD = 4.3V
VDD = 3.6V
VDD = 3.0V
VDD = 2.7V
VDD = 2.5V
VDD = 5.25V
FSAMPLE = 100kSPS
TA = 25°C
Figure 7. AD7680 THD vs. Analog Input Frequency
for Various Supply Voltages at 100 kSPS
75
10
INPUT FREQUENCY (kHz)
100
95
100
80
90
85
105
110
FSAMPLE = 100kSPS
TA = 25°C
VDD = 4.75V
RIN = 10Ω
RIN = 50Ω
RIN = 100Ω
RIN = 1000Ω
Figure 8. AD7680 THD vs. Analog Input Frequency
for Various Source Impedances



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