參數資料
型號: AD7992BRMZ-1
廠商: Analog Devices Inc
文件頁數: 8/29頁
文件大小: 0K
描述: IC ADC 12BIT 2CHAN I2C 10-MSOP
標準包裝: 50
位數: 12
采樣率(每秒): 79k
數據接口: I²C,串行
轉換器數目: 1
功率耗散(最大): 2.2mW
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應商設備封裝: 10-MSOP
包裝: 管件
輸入數目和類型: 2 個單端,單極
產品目錄頁面: 780 (CN2011-ZH PDF)
AD7992
Rev. 0 | Page 15 of 28
For ac applications, removing high frequency components from
the analog input signal is recommended by use of an RC band-
pass filter on the relevant analog input pin. In applications
where harmonic distortion and signal-to-noise ratio are critical,
the analog input should be driven from a low impedance
source. Large source impedances significantly affect the ac
performance of the ADC. This may necessitate the use of an
input buffer amplifier. The choice of the op amp is a function
of the particular application.
When no amplifier is used to drive the analog input, the source
impedance should be limited to low values. The maximum
source impedance depends on the amount of total harmonic
distortion (THD) that can be tolerated. THD increases as the
source impedance increases, and performance degrades.
Figure 22 shows the THD vs. the analog input signal frequency
when using supply voltages of 3 V ± 10% and 5 V ± 10%.
Figure 23 shows the THD vs. the analog input signal frequency
for different source impedances.
–100
–95
–90
–85
–80
–75
–70
–65
–60
–55
–50
10
100
INPUT FREQUENCY (kHz)
THD
(dB)
1
VREF = 2.5V
VDD = 2.7V
VDD = 3.0V
VDD = 3.3V
VDD = 5.5V
VDD = 5.0V
VDD = 4.5V
03263-0-022
Figure 22. THD vs. Analog Input Frequency for Various
Supply Voltages, FS = 136 kSPS, Mode 1
–100
–90
–80
–70
–60
–50
–40
1
10
100
INPUT FREQUENCY (kHz)
THD
(dB)
VDD = 5.5V
VREF = 2.5V
RSOURCE = 1k
RSOURCE = 100
RSOURCE = 0
RSOURCE = 10
03263-0-023
RSOURCE = 50
Figure 23. THD vs. Analog Input Frequency for Various
Source Impedances for VDD = 5.5 V, 136 kSPS, Mode 1
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相關代理商/技術參數
參數描述
AD7992BRMZ-1-R2 制造商:Analog Devices 功能描述:
AD7992BRMZ-1REEL 功能描述:IC ADC 12BIT 2CHAN I2C 10MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:2,500 系列:- 位數:16 采樣率(每秒):15 數據接口:MICROWIRE?,串行,SPI? 轉換器數目:1 功率耗散(最大):480µW 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:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN(5x7) 包裝:帶卷 (TR) 輸入數目和類型:16 個單端,雙極;8 個差分,雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
AD7993 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP
AD7993-0 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP
AD7993-1 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 10- and 12-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP