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ADS8484IRGZT PDF预览

ADS8484IRGZT

更新时间： 2024-11-30 13:05:27
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德州仪器 - TI 转换器输入元件
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ADS8484IRGZT 数据手册

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ADS8484  
SLAS511–NOVEMBER 2007  
18-BIT, 1.25-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER  
SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE,  
REFERENCE  
1
FEATURES  
•
48-Pin 7x7 QFN Package  
•
•
•
•
•
•
•
•
•
•
•
•
1.25-MHz Sample Rate  
APPLICATIONS  
±1.5 LSB Typ, ±2.5 LSB Max INL  
+0.8/-0.6 LSB Typ, +1.5/-1 LSB Max DNL  
18-Bit NMC Ensured Over Temperature  
±0.5-mV Offset Error  
•
•
•
•
•
Medical Instruments  
Optical Networking  
Transducer Interface  
High Accuracy Data Acquisition Systems  
Magnetometers  
±0.05-PPM/°C Offset Error Drift  
±0.1 %FSR Gain Error  
DESCRIPTION  
±0.5-PPM/°C Gain Error Drift  
98.5dB SNR, –120db THD, 121dB SFDR  
Zero Latency  
The ADS8484 is an 18-bit, 1.25-MSPS A/C converter  
with an internal 4.096-V reference and  
a
pseudo-bipolar, fully differential input. The device  
includes a 18-bit capacitor-based SAR A/D converter  
with inherent sample and hold. The ADS8484 offers a  
full 18-bit interface, a 16-bit option where data is read  
using two read cycles, or an 8-bit bus option using  
three read cycles.  
Low Power: 235 mW Typ at 1.25 MSPS  
Pseudo-Bipolar Fully Differential Input Range:  
Vref to –Vref  
•
•
•
•
•
Onboard Reference with 6 PPM/°C Drift  
Onboard Reference Buffer  
The ADS8484 is available in a 48-lead 7x7 QFN  
package and is characterized over the industrial  
–40°C to 85°C temperature range.  
High-Speed Parallel Interface  
Wide Digital Supply 2.7 V to 5.25 V  
8-/16-/18-Bit Bus Transfer  
HIGH SPEED SAR CONVERTER FAMILY  
TYPE/SPEED  
18-Bit Pseudo-Diff  
500 kHz  
~600 kHz  
750 kHz  
1 MHz  
1.25 MHz  
2 MHz  
3 MHz  
4MHz  
ADS8383  
ADS8381  
ADS8481  
ADS8380 (s)  
ADS8382 (s)  
ADS8370 (s)  
ADS8472 (s)  
18-Bit Pseudo-Bipolar, Fully Diff  
16-Bit Pseudo-Diff  
ADS8482  
ADS8471  
ADS8484  
ADS8401  
ADS8405  
ADS8402  
ADS8406  
ADS7890 (s)  
ADS8327  
ADS8328  
ADS8371  
ADS8411  
ADS8410 (s)  
ADS8412  
ADS8472  
ADS7886  
ADS8422  
ADS7881  
16-Bit Pseudo-Bipolar, Fully Diff  
ADS8413 (s)  
14-Bit Pseudo-Diff  
12-Bit Pseudo-Diff  
ADS7891  
BYTE  
Output  
Latches  
and  
SAR  
16-/8-Bit  
Parallel DATA  
Output Bus  
+
_
3-State  
Drivers  
+IN  
−IN  
CDAC  
BUS 18/16  
Comparator  
REFIN  
CONVST  
BUSY  
CS  
Conversion  
and  
Control Logic  
4.096-V  
Internal  
Reference  
REFOUT  
Clock  
RD  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007, Texas Instruments Incorporated  
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ADS8484IRGZT 替代型号

型号 品牌 替代类型 描述 数据表
ADS8484IRGZR TI

类似代替

 18 Bit 1.25MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input 48-VQFN -40 t

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