ADS7812 低功耗串行 12 位采样模数转换器

	ADS7812
Resolution(Bits)	12
Sample Rate (max)	40kSPS
Architecture	SAR
Power Consumption(Typ)(mW)	35
SINAD(dB)	74
SNR(dB)	74
SFDR(dB)	98
DNL(Max)(+/-LSB)	0.5
INL(Max)(+/-LSB)	0.5
No Missing Codes(Bits)	12
ENOB(Bits)	12
No. of Supplies	1
Analog Voltage AV/DD(Min)(V)	4.75
Analog Voltage AV/DD(Max)(V)	5.25
Logic Voltage DV/DD(Min)(V)	4.75
Logic Voltage DV/DD(Max)(V)	5.25
Input Configuration Range	+4V, 10V, +/-3.3V, 5V, 10V
Reference Mode	Int and Ext
Rating	Catalog
Pin/Package	16PDIP, 16SOIC
# Input Channels	1
Operating Temperature Range(°C)	-40 to 85

The ADS7812 is a low-power, single +5V supply, 12-bit sampling analog-to-digital converter. It contains a complete 12-bit capacitor-based SAR A/D with a sample/hold, clock, reference, and serial data interface.

The converter can be configured for a variety of input ranges including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high impedance 0.3V to 2.8V input range is also available (input impedance > 10MOhm). For most input ranges, the input voltage can swing to +16.5V or –16.5V without damage to the converter.

A flexible SPI compatible serial interface allows data to be synchronized to an internal or external clock. The ADS7812 is specified at a 40kHz sampling rate over the –40°C to +85°C temperature range.

ADS7812 特性

• 20us max CONVERSION TIME
• SINGLE +5V SUPPLY OPERATION
• PIN-COMPATIBLE WITH 16-BIT ADS7813
• EASY-TO-USE SERIAL INTERFACE
• 0.3" DIP-16 AND SO-16
• ±0.5LSB max INL AND DNL
• 72dB min SINAD
• USES INTERNAL OR EXTERNAL REFERENCE
• MULTIPLE INPUT RANGES
• 35mW max POWER DISSIPATION
• NO MISSING CODES
• 50uW POWER DOWN MODE
• APPLICATIONS
  • DATA ACQUISITION SYSTEMS
  • INDUSTRIAL CONTROL
  • TEST EQUIPMENT
  • DIGITAL SIGNAL PROCESSING

ADS7812 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
ADS7812P	ACTIVE		12.40 | 1ku	PDIP (N) | 16	25 | TUBE	ADS7812P
ADS7812PB	ACTIVE		14.20 | 1ku	PDIP (N) | 16	25 | TUBE	ADS7812P
ADS7812PBG4	ACTIVE		14.20 | 1ku	PDIP (N) | 16	25 | TUBE	ADS7812P
ADS7812PG4	ACTIVE		12.40 | 1ku	PDIP (N) | 16	25 | TUBE	ADS7812P
ADS7812U	ACTIVE	-40 to 85	11.80 | 1ku	SOIC (DW) | 16	40 | TUBE	ADS7812U B
ADS7812UB	ACTIVE	-40 to 85	15.20 | 1ku	SOIC (DW) | 16	40 | TUBE	ADS7812U B
ADS7812UB/1K	ACTIVE	-40 to 85	14.20 | 1ku	SOIC (DW) | 16	1000 | LARGE T&R	ADS7812U B
ADS7812UB/1KE4	ACTIVE	-40 to 85	14.20 | 1ku	SOIC (DW) | 16	1000 | LARGE T&R	ADS7812U B
ADS7812UB/1KG4	ACTIVE	-40 to 85	14.20 | 1ku	SOIC (DW) | 16	1000 | LARGE T&R	ADS7812U B
ADS7812UBE4	ACTIVE	-40 to 85	15.20 | 1ku	SOIC (DW) | 16	40 | TUBE	ADS7812U B
ADS7812UBG4	ACTIVE	-40 to 85	15.20 | 1ku	SOIC (DW) | 16	40 | TUBE	ADS7812U B
ADS7812UE4	ACTIVE	-40 to 85	11.80 | 1ku	SOIC (DW) | 16	40 | TUBE	ADS7812U B
ADS7812UG4	ACTIVE	-40 to 85	11.80 | 1ku	SOIC (DW) | 16	40 | TUBE	ADS7812U B

ADS7812 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
ADS7812P	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		ADS7812P
ADS7812PB	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		ADS7812PB
ADS7812PBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	ADS7812PBG4	ADS7812PBG4
ADS7812PG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	ADS7812PG4	ADS7812PG4
ADS7812U	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		ADS7812U
ADS7812UB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		ADS7812UB
ADS7812UB/1K	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		ADS7812UB/1K
ADS7812UB/1KE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		ADS7812UB/1KE4
ADS7812UB/1KG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	ADS7812UB/1KG4	ADS7812UB/1KG4
ADS7812UBE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		ADS7812UBE4
ADS7812UBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	ADS7812UBG4	ADS7812UBG4
ADS7812UE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR		ADS7812UE4
ADS7812UG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	ADS7812UG4	ADS7812UG4

ADS7812 应用技术支持与电子电路设计开发资源下载

1. ADS7812 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)

ADS7800 工具与软件

名称	型号	公司	工具/软件类型
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