參數資料
型號： ADS7953SBRHBT
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
封裝： GREEN, PLASTIC, PQFP-32
文件頁數： 36/63頁
文件大?。?/td> 1734K
代理商： ADS7953SBRHBT
MXO
AINP
Ch0
Chn*
Ch2
Ch1
ADC
HighInput
impedancePGA
(ornoninvertingbuffer
like THS4031)
GPIO
1,2,3
PGA Gain
Control
GPIO0
H/L Alarm
SDI
SCLK
CS
SDO
To
Host
REF
10 F
m
REF5025
o/p
Fromsensors,INA etc.
Sourceimpedancehasvery
littleeffectonperformance.
Referto TypicalCharacteristics
fordetails.
www.ti.com
SLAS605A – JUNE 2008 – REVISED JANUARY 2010
GPIO 1 to 3 are available only in TSSOP packaged devices. QFN device offers 'GPIO 0' only. As a result all
references related to 'GPIO 0' only are valid in case of QFN package devices.
Figure 58. Typical Application Diagram Showing Common Buffer/PGA for all Channels
When the converter samples an input, the voltage difference between AINP and AGND is captured on the
internal capacitor array. The (peak) input current through the analog inputs depends upon a number of factors:
sample rate, input voltage, and source impedance. The current into the ADS79XX charges the internal capacitor
array during the sample period. After this capacitance has been fully charged, there is no further input current.
When the converter goes into hold mode, the input impedance is greater than 1 G
Ω.
Care must be taken regarding the absolute analog input voltage. To maintain linearity of the converter, the Ch0 ..
Chn and AINP inputs should be within the limits specified. Outside of these ranges, converter linearity may not
meet specifications.
Copyright 2008–2010, Texas Instruments Incorporated
41
相關PDF資料
PDF描述
ADS7953SRHBT 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
ADS803E 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
ADS8342IBPFBTG4 4-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
ADS8412IPFBTG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
ADS8412IBPFBTG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
相關代理商/技術參數
參數描述
ADS7953SDBT 功能描述:模數轉換器 - ADC 12B 1MSPS 16Ch Sgl ended micro Pwr RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7953SDBTG4 功能描述:模數轉換器 - ADC 12B 1MSPS 12Ch sr i/f SAR ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7953SDBTR 功能描述:模數轉換器 - ADC 12B 1MSPS 16Ch Sgl ended micro Pwr RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7953SDBTRG4 功能描述:模數轉換器 - ADC 12B 1MSPS 12Ch sr i/f SAR ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7953SRHBR 功能描述:模數轉換器 - ADC 12B 1MSPS 16Ch Sgl End MicroPwr SAR ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
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