參數(shù)資料
型號： ADS1194CZXGT
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PBGA64
封裝： 8 X 8 MM, GREEN, PLASTIC, NFBGA-64
文件頁數(shù)： 61/76頁
文件大?。?/td> 1193K
代理商： ADS1194CZXGT
ADS1198
AVDD
0.1 F
m
1 F
m
+3V
AVDD1
AVSS
AVSS1
DGND
DVDD
+1.8V
0.1 F
m
1 F
m
0.1 F
m
VREFP
VREFN
VCAP1
VCAP2
VCAP3
VCAP4
WCT
100pF
1 F
m
1 F
m
1 F
m
10 F
m
22 F
m
0.1 F
m
RESV1
SBAS471B
– APRIL 2010 – REVISED APRIL 2011
QUICK-START GUIDE
PCB LAYOUT
Power Supplies and Grounding
The ADS1194/6/8 have three supplies: AVDD, AVDD1, and DVDD. Both AVDD and AVDD1 should be as quiet
as possible. AVDD1 provides the supply to the charge pump block and has transients at fCLK. Therefore, it is
recommended that AVDD1 and AVSS1 be star-connected to AVDD and AVSS. It is important to eliminate noise
from AVDD and AVDD1 that is non-synchronous with the ADS1194/6/8 operation. Each supply of the
ADS1194/6/8 should be bypassed with 1
μF and a 0.1μF solid ceramic capacitors. It is recommended that
placement of the digital circuits (DSP, microcontrollers, FPGAs, etc.) in the system is done such that the return
currents on those devices do not cross the analog return path of the ADS1194/6/8. The ADS1194/6/8 can be
powered from unipolar or bipolar supplies.
The capacitors used for decoupling can be of the surface-mount, low-cost, low-profile, multi-layer ceramic type.
In most cases, the VCAP1 capacitor can also be a multi-layer ceramic, but in systems where the board is
subjected to high or low frequency vibration, it is recommend to install a non-ferroelectric capacitor such as a
tantalum or class 1 capacitor (for example, C0G or NPO). EIA class 2 and class 3 dielectrics (such as X7R, X5R,
X8R, etc.) are ferroelectric. The piezoelectric property of these capacitors can appear as electrical noise coming
from the capacitor. When using internal reference, noise on the VCAP1 node results in performance degradation.
Connecting the Device to Unipolar (+3V/+1.8V) Supplies
Figure 54 illustrates the ADS1194/6/8 connected to a unipolar supply. In this example, analog supply (AVDD) is
referenced to analog ground (AVSS) and digital supplies (DVDD) are referenced to digital ground (DGND).
NOTE: Place the capacitors for supply, reference, WCT, and VCAP1 to VCAP4 as close to the package as possible.
Figure 54. Single-Supply Operation
64
Copyright
2010–2011, Texas Instruments Incorporated
Product Folder Link(s): ADS1194 ADS1196 ADS1198
相關(guān)PDF資料
PDF描述
ADS1251 "ResolutionPlus 24-Bit
ADS5102IPFBR 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE
ADS5103 "10 Bit
ADS5103CPFB 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE
ADS5103CPFBR 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS1194IPAG 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power 8-Channel 16-Bit Analog Front-End for Biopotential Measurements
ADS1194IPAGR 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power 8-Channel 16-Bit Analog Front-End for Biopotential Measurements
ADS1196 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements
ADS1196CPAG 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Pwr6Ch16B Ana Front-End for ECG 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
ADS1196CPAG 制造商:Texas Instruments 功能描述:; Resolution (Bits):16bit; Sampling Rate 制造商:Texas Instruments 功能描述:IC, ADC, 6CH, 16BIT, 8KSPS, TQFP-64
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*