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ADS7867

更新时间： 2024-11-23 22:53:39
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
24页 532K
描述
1.2-V, 12-/10-/8-BIT, 200-KSPS/100-KSPS, MICRO-POWER, MINIATURE ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE

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ADS7867 数据手册

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ADS7866  
ADS7867  
fr o m Tex a s I n st ru m en t s  
ADS7868  
SLAS465–JUNE 2005  
1.2-V, 12-/10-/8-BIT, 200-KSPS/100-KSPS, MICRO-POWER, MINIATURE  
ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE  
The sampling, conversion, and activation of digital  
output SDO are initiated on the falling edge of CS.  
The serial clock SCLK is used for controlling the  
conversion rate and shifting data out of the converter.  
Furthermore, SCLK provides a mechanism to allow  
digital host processors to synchronize with the con-  
FEATURES  
•
Single 1.2-V to 3.6-V Supply Operation  
•
High Throughput  
– 200/240/280KSPS for 12/10/8-Bit VDD ≥ 1.6 V  
– 100/120/140KSPS for 12/10/8-Bit VDD ≥ 1.2 V  
±1.5LSB INL, 12-Bit NMC (ADS7866)  
verter.  
These  
converters  
interface  
with  
•
•
micro-processors or DSPs through a high-speed SPI  
compatible serial interface. There are no pipeline  
delays associated with the device.  
71 dB SNR, –83 dB THD at fIN = 30 kHz  
(ADS7866)  
•
•
•
•
Synchronized Conversion with SCLK  
SPI Compatible Serial Interface  
No Pipeline Delays  
The minimum conversion time is determined by the  
frequency of the serial clock input, SCLK, while the  
maximum frequency of SCLK is determined by the  
minimum sampling time required to charge the input  
capacitance to 12/10/8-bit accuracy for the  
Low Power  
ADS7866/67/68,  
respectively.  
The  
maximum  
– 1.39 mW Typ at 200 KSPS, VDD = 3.6 V  
– 0.39 mW Typ at 200 KSPS, VDD = 1.6 V  
– 0.22 mW Typ at 100 KSPS, VDD = 1.2 V  
Auto Power-Down: 8 nA Typ, 300 nA Max  
0 V to VDD Unipolar Input Range  
6-Pin SOT-23 Package  
throughput is determined by how often a conversion  
is initiated when the minimum sampling time is met  
and the maximum SCLK frequency is used. Each  
device automatically powers down after each conver-  
sion, which allows each device to save power when  
the throughput is reduced while using the maximum  
SCLK frequency.  
•
•
•
The converter reference is taken internally from the  
supply. Hence, the analog input range for these  
APPLICATIONS  
•
•
•
•
•
•
Battery Powered Systems  
Isolated Data Acquisition  
Medical Instruments  
Portable Communication  
Portable Data Acquisition Systems  
Automatic Test Equipment  
devices is 0 V to VDD  
.
These devices are available in a 6-pin SOT-23  
package and are characterized over the industrial  
–40°C to 85°C temperature range.  
REF/V  
DD  
DESCRIPTION  
12/10/8 BIT ADC  
Comparator  
The ADS7866/67/68 are low power, miniature,  
12/10/8-bit A/D converters each with a unipolar,  
single-ended input. These devices can operate from a  
single 1.6 V to 3.6 V supply with a 200-KSPS  
throughput for ADS7866. In addition, these devices  
can maintain at least a 100-KSPS throughput with a  
supply as low as 1.2 V.  
+
VIN  
S/H  
CDAC  
_
Conversion  
and  
Control  
Logic  
CS  
SCLK  
SDO  
SAR  
GND  
Micro-Power Miniature SAR Converter Family  
RESOLUTION/SPEED  
< 200 KSPS  
1 MSPS – 1.25 MSPS  
12-Bit  
10-Bit  
8-Bit  
ADS7866 (1.2 VDD to 3.6 VDD  
ADS7867 (1.2 VDD to 3.6 VDD  
ADS7868 (1.2 VDD to 3.6 VDD  
)
)
)
ADS7886 (2.35 VDD to 5.25 VDD  
ADS7887 (2.35 VDD to 5.25 VDD  
ADS7888 (2.35 VDD to 5.25 VDD  
)
)
)
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.  
Copyright © 2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...24

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ADS7867 替代型号

型号 品牌 替代类型 描述 数据表
TLC1551 TI

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ADS7867IDBVT TI

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 		1.2-V, 12-/10-/8-BIT, 200-KSPS/100-KSPS, MICRO-POWER, MINIATURE ANALOG-TO-DIGITAL CONVERTE
ADS7867IDBVT BB

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 		1.2-V, 12-/10-/8-BIT, 200-KSPS/100-KSPS, MICRO-POWER, MINIATURE ANALOG-TO-DIGITAL CONVERTE
ADS7867IDBVTG4 BB

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 		1.2-V, 12-/10-/8-BIT, 200-KSPS/100-KSPS, MICRO-POWER, MINIATURE ANALOG-TO-DIGITAL CONVERTE
ADS7867IDBVTG4 TI

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