參數(shù)資料
型號(hào)： ADS8402I
英文描述： 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
中文描述： 16位，1.25 MSPS的，單極差動(dòng)輸入，微功耗采樣模數(shù)位并行接口和參考轉(zhuǎn)爐
文件頁(yè)數(shù)： 24/25頁(yè)
文件大小： 212K
代理商： ADS8402I
ADS8402
SLAS154B
–
DECEMBER 2002
–
REVISED MAY 2003
www.ti.com
24
The AGND and BDGND pins should be connected to a clean ground point. In all cases, this should be the analog
ground. Avoid connections which are close to the grounding point of a microcontroller or digital signal processor. If
required, run a ground trace directly from the converter to the power supply entry point. The ideal layout consists of
an analog ground plane dedicated to the converter and associated analog circuitry.
As with the AGND connections, +VA
should be connected to a 5-V power supply plane or trace that is separate from
the connection for digital logic until they are connected at the power entry point. Power to the ADS8402 should be
clean and well bypassed. A 0.1-
μ
F ceramic bypass capacitor should be placed as close to the device as possible.
See Table 2 for the placement of the capacitor. In addition, a 1-
μ
F to 10-
μ
F capacitor is recommended. In some
situations, additional bypassing may be required, such as a 100-
μ
F electrolytic capacitor or even a Pi filter made up
of inductors and capacitors
—
all designed to essentially low-pass filter the 5-V supply, removing the high frequency
noise.
Table 2. Power Supply Decoupling Capacitor Placement
POWER SUPPLY PLANE
SUPPLY PINS
CONVERTER ANALOG SIDE
CONVERTER DIGITAL SIDE
Pin pairs that require shortest path to decoupling capacitors
(4,5), (8,9), (10,11), (13,15),
(43,44), (45,46)
(24,25), (34, 35)
Pins that require no decoupling
12, 14
37
相關(guān)PDF資料
PDF描述
ADS8402IBPFBR 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
ADS8402IBPFBT 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
ADS8402IPFBR 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
ADS8402IPFBT 16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
ADS8413IRGZT 16-BIT, 2-MSPS, LVDS SERIAL INTERFACE, SAR ANALOG-TO-DIGITAL CONVERTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS8402IB 制造商:BB 制造商全稱:BB 功能描述:16-BIT, 1.25 MSPS, UNIPOLAR DIFFERENTIAL INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE AND REFERENCE
ADS8402IBPFBR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 bit 1.25MSPS Parallel W/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8402IBPFBRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 bit 1.25MSPS Parallel W/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8402IBPFBT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 bit 1.25MSPS Parallel W/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8402IBPFBTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 bit 1.25MSPS Parallel W/Ref RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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