參數(shù)資料
型號: AD7912ARMZ
廠商: Analog Devices Inc
文件頁數(shù): 5/32頁
文件大?。?/td> 0K
描述: IC ADC 10BIT DUAL 2CH 8MSOP
標(biāo)準(zhǔn)包裝: 50
位數(shù): 10
采樣率(每秒): 1M
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 20mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 管件
輸入數(shù)目和類型: 2 個單端,單極
配用: EVAL-AD7912CBZ-ND - BOARD EVALUATION FOR AD7912
AD7912/AD7922
Rev. 0 | Page 13 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 10 and Figure 11 show typical FFT plots for the AD7922
and AD7912, respectively, at a 1 MSPS sample rate and 100 kHz
input frequency.
Figure 12 shows the SINAD performance versus the input
frequency for various supply voltages while sampling at 1 MSPS
with a SCLK frequency of 18 MHz for the AD7922.
Figure 13 shows the SNR performance versus the input fre-
quency for various supply voltages while sampling at 1 MSPS
with an SCLK frequency of 18 MHz for the AD7922.
Figure 14 and Figure 15 show INL and DNL performance for
the AD7922.
Figure 16 shows a graph of the THD versus the analog input
frequency for different source impedances when using a supply
voltage of 3.6 V and a sampling rate of 1 MSPS. See the Analog
Input section.
Figure 17 shows a graph of the THD versus the analog input
frequency for various supply voltages while sampling at 1 MSPS
with an SCLK frequency of 18 MHz.
Figure 18 shows the shutdown current versus the voltage supply
for different operating temperatures.
5
–15
–35
–55
–75
–95
–115
0
50
100
150
200
250
300
350
400
450
500
04351-0-040
S
NR
(dB)
FREQUENCY (kHz)
8192 POINT FFT
VDD = 2.7V
FSAMP = 1MSPS
FIN = 100kHz
SNR = 73.1dB
SINAD = 72.55dB
THD = –81.78dB
SFDR = –83.03dB
Figure 10. AD7922 Dynamic Performance at 1 MSPS
–10
–30
–50
–70
–90
–110
0
50
100
150
200
250
300
350
400
450
500
04351-0-041
S
NR
(dB)
FREQUENCY (kHz)
8192 POINT FFT
VDD = 2.7V
FSAMP = 1MSPS
FIN = 100kHz
SNR = 61.88dB
SINAD = 61.83dB
THD = –81.12dB
SFDR = –84.92dB
Figure 11. AD7912 Dynamic Performance at 1 MSPS
–67
–74
–73
–72
–71
–70
–69
–68
10
100
1000
04351-0-043
S
INAD
(dB)
FREQUENCY (kHz)
VDD = 2.7V
VDD = 2.35V
VDD = 5.25V
VDD = 4.75V
VDD = 3.6V
Figure 12. AD7922 SINAD vs. Input Frequency at 1 MSPS
–71.6
–71.8
–72.0
–72.4
–72.2
–72.6
–72.8
–73.0
–73.2
–73.4
–73.6
10
100
1000
04351-0-044
S
NR
(dB)
FREQUENCY (kHz)
VDD = 2.35V
VDD = 5.25V
VDD = 2.7V
VDD = 4.75V
VDD = 3.6V
Figure 13. AD7922 SNR vs. Input Frequency at 1 MSPS
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