ADS7818 12 位高速低功耗采样模数转换器

ADS7818 相关产品

• ADS7866 - 器件与被比较器件具有相同的功能，但并不是引脚对引脚等效，也有可能参数不相同。 Has a lower sampling rate (200kSPS). No internal reference
• ADS7886 - 器件与被比较器件具有相同的功能，但并不是引脚对引脚等效，也有可能参数不相同。 Has a higher sampling rate (1MSPS). No internal reference

	ADS7818	ADS7834	ADS7835
Resolution(Bits)	12	12	12
Sample Rate (max)	500kSPS	500kSPS	500kSPS
Architecture	SAR	SAR	SAR
Power Consumption(Typ)(mW)	11	11	17.5
SINAD(dB)	70	70	72
SNR(dB)	72	72	72
SFDR(dB)	78	78	82
DNL(Max)(+/-LSB)	1	1	1
INL(Max)(+/-LSB)	1	1	1
No Missing Codes(Bits)	12	12	12
ENOB(Bits)			11.67
No. of Supplies	1	1	1
Analog Voltage AV/DD(Min)(V)	4.75	4.75	4.75
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	4.75	4.75	4.75
Logic Voltage DV/DD(Max)(V)	5.25	5.25	5.25
Input Configuration Range	+5V	+2.5V	+/-2.5V
Reference Mode	Int	Int and Ext	Int and Ext
Rating	Catalog	Catalog	Catalog
Pin/Package	8MSOP, 8PDIP	8MSOP	8MSOP
# Input Channels	1	1	1
Operating Temperature Range(°C)	-40 to 85	-40 to 85

ADS7818 说明

The ADS7818 is a 12-bit sampling analog-to-digital converter (A/D) complete with sample/hold, internal 2.5V reference, and synchronous serial interface. Typical power dissipation is 11mW at a 500kHz throughput rate. The device can be placed into a power down mode which reduces dissipation to just 2.5mW. The input range is zero to two times the reference voltage, and the internal reference can be overdriven by an external voltage.

Low power, small size, and high-speed make the ADS7818 ideal for battery operated systems such as wireless communication devices, portable multi-channel data loggers, and spectrum analyzers. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7818 is available in a plastic mini-DIP-8 or an MSOP-8 package and is guaranteed over the –40°C to +85°C temperature range.

ADS7818 特性

• l 500kHz THROUGHPUT RATE
• l 2.5V INTERNAL REFERENCE
• l LOW POWER: 11mW
• l SINGLE SUPPLY +5V OPERATION
• l DIFFERENTIAL INPUT
• l SERIAL INTERFACE
• l GUARANTEED NO MISSING CODES
• l MINI-DIP-8 AND MSOP-8
• l UNIPOLAR INPUT RANGE

ADS7818 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
ADS7818E/250	ACTIVE	-40 to 85	2.75 | 1ku	MSOP(DGK) | 8	250 | SMALL T&R	A18
ADS7818E/250G4	ACTIVE	-40 to 85	2.75 | 1ku	MSOP(DGK) | 8	250 | SMALL T&R	A18
ADS7818E/2K5	ACTIVE	-40 to 85	2.50 | 1ku	MSOP(DGK) | 8	2500 | LARGE T&R	A18
ADS7818E/2K5G4	ACTIVE	-40 to 85	2.50 | 1ku	MSOP(DGK) | 8	2500 | LARGE T&R	A18
ADS7818EB/250	ACTIVE	-40 to 85	3.25 | 1ku	MSOP(DGK) | 8	250 | SMALL T&R	A18
ADS7818EB/250G4	ACTIVE	-40 to 85	3.25 | 1ku	MSOP(DGK) | 8	250 | SMALL T&R	A18
ADS7818EB/2K5	ACTIVE	-40 to 85	3.00 | 1ku	MSOP(DGK) | 8	2500 | LARGE T&R	A18
ADS7818EB/2K5G4	ACTIVE	-40 to 85	3.00 | 1ku	MSOP(DGK) | 8	2500 | LARGE T&R	A18
ADS7818P	ACTIVE	-40 to 85	2.50 | 1ku	PDIP (N) | 8	50 | TUBE	ADS7818P
ADS7818PB	ACTIVE	-40 to 85	3.00 | 1ku	PDIP (N) | 8	50 | TUBE	ADS7818P B
ADS7818PBG4	ACTIVE	-40 to 85	3.00 | 1ku	PDIP (N) | 8	50 | TUBE	ADS7818P B
ADS7818PG4	ACTIVE	-40 to 85	2.50 | 1ku	PDIP (N) | 8	50 | TUBE	ADS7818P

ADS7818 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
ADS7818E/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		ADS7818E/250
ADS7818E/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7818E/250G4	ADS7818E/250G4
ADS7818E/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		ADS7818E/2K5
ADS7818E/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7818E/2K5G4	ADS7818E/2K5G4
ADS7818EB/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		ADS7818EB/250
ADS7818EB/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7818EB/250G4	ADS7818EB/250G4
ADS7818EB/2K5	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		ADS7818EB/2K5
ADS7818EB/2K5G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7818EB/2K5G4	ADS7818EB/2K5G4
ADS7818P	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		ADS7818P
ADS7818PB	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		ADS7818PB
ADS7818PBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	ADS7818PBG4	ADS7818PBG4
ADS7818PG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	ADS7818PG4	ADS7818PG4

ADS7818 应用技术支持与电子电路设计开发资源下载

1. ADS7818 数据资料 dataSheet 下载.PDF
2. TI 德州仪器仪ADC 模数转换器产品选型与价格 . xls
3. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
4. 所选封装材料的热学和电学性质 (PDF 645 KB)
5. 高速数据转换 (PDF 1967 KB)
6. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
7. A Spreadsheet for Calculating the Frequency Response of the ADS1250-54 (PDF 461 KB)
8. A Spreadsheet for Calculating the Frequency Response of the ADS1250-54
9. Understanding the ADS1251, ADS1253, and ADS1254 Input Circuitry (PDF 39 KB)
10. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
11. Principles of Data Acquisition and Conversion (PDF 50 KB)
12. Interleaving Analog-to-Digital Converters (PDF 64 KB)
13. What Designers Should Know About Data Converter Drift (PDF 95 KB)
14. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
15. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

ADS7818 工具与软件

名称	型号	公司	工具/软件类型
针对 Code Composer Studio 的 DCPFREETOOL 软件插件	DCPFREETOOL	Texas Instruments	实用程序/插件
ADS7818 评估模块	ADS7818EVM	Texas Instruments	开发电路板/EVM
用于模数转换器的抗混淆计算工具	ANTIALIASINGCALC	Texas Instruments	计算实用程序
运算放大器至 ADC 电路拓扑计算器	ADC-INPUT-CALC	Texas Instruments	计算实用程序