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參數資料
型號: AD7998BRUZ-1REEL3
廠商: Analog Devices, Inc.
英文描述: 8-Channel, 10- and 12-Bit ADCs with I2CCompatible
中文描述: 8通道,10 -和12位ADC與I2CCompatible
文件頁數: 17/32頁
文件大小: 1056K
代理商: AD7998BRUZ-1REEL3
AD7997/AD7998
For ac applications, removing high frequency components from
the analog input signal is recommended, by using 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.
Rev. 0 | Page 17 of 32
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 imped-
ance increases, and performance degrades. Figure 23 shows the
THD vs. the analog input signal frequency when using supply
voltages of 3 V ± 10% and 5 V ± 10%. Figure 24 shows the THD
vs. the analog input signal frequency for different source
impedances.
–100
–90
–80
–70
–50
–40
T
10
1000
INPUT FREQUENCY(kHz)
0
100
–60
V
DD
= 5.5V
V
DD
= 5V
V
DD
= 4.5V
V
DD
= 3.3V
V
DD
= 3V
V
DD
= 2.7V
Figure 23. THD vs. Analog Input Frequency for Various
Supply Voltages, F
S
= 136 kSPS, Mode 1
–100
–90
–80
–70
–50
–40
T
10
1000
INPUT FREQUENCY(kHz)
0
100
–60
R
IN
= 50
R
IN
= 10
R
IN
= 100
R
IN
= 1000
V
DD
= 5V
Figure 24. THD vs. Analog Input Frequency for Various
Source Impedances for V
DD
= 5 V, 136 kSPS, Mode 1
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相關代理商/技術參數
參數描述
AD7999 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2C-Compatible Interface in 8-Lead SOT-23
AD7999ARJZ-1RL 功能描述:IC ADC 8BIT 4CHAN I2C SOT23-8 RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 位數:10 采樣率(每秒):357k 數據接口:DSP,MICROWIRE?,QSPI?,串行,SPI? 轉換器數目:1 功率耗散(最大):830µW 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:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN-EP(3x3) 包裝:剪切帶 (CT) 輸入數目和類型:2 個單端,單極;2 個單端,雙極;1 個差分,單極;1 個差分,雙極 產品目錄頁面:1396 (CN2011-ZH PDF) 其它名稱:MAX1395ETB+TCT
AD7999YRJZ-0 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23
AD7999YRJZ-1 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23
AD7999YRJZ-1500RL7 功能描述:IC ADC 8BIT 4CH SAR I2C SOT23-8 RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率(每秒):1M 數據接口:串行,SPI? 轉換器數目:1 功率耗散(最大):- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤(4x4) 包裝:Digi-Reel® 輸入數目和類型:8 個單端,單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
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