参数资料
型号: AD7680BRM
厂商: Analog Devices Inc
文件页数: 2/24页
文件大小: 0K
描述: IC ADC 16BIT LP UNIPOLAR 8-MSOP
标准包装: 50
系列: PulSAR®
位数: 16
采样率(每秒): 100k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 26.4mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
输入数目和类型: 1 个单端,单极
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.
03643-0-021
dB
–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
03643-0-016
S
INAD
(d
B)
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
03643-0-017
T
HD
(d
B)
90
10
INPUT FREQUENCY (kHz)
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
03643-0-018
THD
(dB)
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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