ADS7957 10 位、1MSPS、16 通道、单端、微功耗、串行接口、SAR ADC

ADS7957 说明

The ADS79XX is a 12/10/8-bit multichannel analog-to-digital converter family. The following table shows all twelve devices from this product family.

The devices include a capacitor based SAR A/D converter with inherent sample and hold.

The devices accept a wide analog supply range from 2.7V to 5.25V. Very low power consumption makes these devices suitable for battery-powered and isolated power supply applications.

A wide 1.7V to 5.25V I/O supply range facilitates a glue-less interface with the most commonly used CMOS digital hosts.

The serial interface is controlled by CS and SCLK for easy connection with microprocessors and DSP.

The input signal is sampled with the falling edge of CS.


ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961
Resolution(Bits) 12 12 12 12 10 10 10 10 8 8 8 8
Sample Rate (max) 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS 1MSPS
Architecture SAR SAR SAR SAR SAR SAR SAR SAR SAR SAR SAR SAR
Power Consumption(Typ)(mW) 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5
SINAD(dB) 69 69 69 69 60 60 60 60 49 49 49 49
SNR(dB) 70 70 70 70 60 60 60 60 49 49 49 49
SNR(Typ)(dB) 71.7 71.7 71.7 71.7 61.7 61.7 61.7 61.7 49.8 49.8 49 49
SFDR(dB) 84 84 84 84 82 82 82 82 78 78 78 78
DNL(Max)(+/-LSB) 1 1 1 1 0.5 0.5 0.5 0.5 0.3 0.3 0.3 0.3
INL(Max)(+/-LSB) 1 1 1 1 0.5 0.5 0.5 0.5 0.3 0.3 0.3 0.3
No Missing Codes(Bits) 12 12 12 12 10 10 10 10 8 8 8 8
ENOB(Bits) 11.29 11.29 11.29 11.29 9.66 9.66 9.66 9.66 7.85 7.85 7.85 7.85
No. of Supplies 2 2 2 2 2 2 2 2 2 2 2 2
Analog Voltage AV/DD(Min)(V) 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7
Analog Voltage AV/DD(Max)(V) 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25
Logic Voltage DV/DD(Min)(V) 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7
Logic Voltage DV/DD(Max)(V) 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25 5.25
Input Configuration Range Vref, 2Vref Vref, 2Vref Vref, 2Vref Vref, 2Vref Vref, 2Vref Vref, 2VREF Vref, 2VREF Vref, 2Vref Vref. 2Vref Vref, 2Vref Vref, 2Vref Vref, 2Vref
Reference Mode Ext Ext Ext Ext Ext Ext Ext Ext Ext Ext Ext Ext
Rating Catalog Catalog Catalog Catalog Catalog Catalog Catalog Catalog Catalog Catalog Catalog Catalog
Pin/Package 24VQFN, 30TSSOP 24VQFN, 30TSSOP 32QFN, 38TSSOP 32QFN, 38TSSOP 24VQFN, 30TSSOP 24VQFN, 30TSSOP 32QFN, 38TSSOP 32QFN, 38TSSOP 24VQFN, 30TSSOP 24VQFN, 30TSSOP 32QFN, 38TSSOP 32QFN, 38TSSOP
# Input Channels 4 8 12 16 4 8 12 16 4 8 12 16
Operating Temperature Range(°C) -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 
ADS7957 特性
ADS7957 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
ADS7957SDBT ACTIVE -40 to 125 4.30 | 1ku TSSOP (DBT) | 38 50 | TUBE ADS7957
ADS7957SDBTG4 ACTIVE -40 to 125 4.30 | 1ku TSSOP (DBT) | 38 50 | TUBE ADS7957
ADS7957SDBTR ACTIVE -40 to 125 3.90 | 1ku TSSOP (DBT) | 38 2000 | LARGE T&R ADS7957
ADS7957SDBTRG4 ACTIVE -40 to 125 3.90 | 1ku TSSOP (DBT) | 38 2000 | LARGE T&R ADS7957
ADS7957SRHBR ACTIVE -40 to 125 3.55 | 1ku QFN (RHB) | 32 3000 | LARGE T&R ADS
7957
ADS7957SRHBT ACTIVE -40 to 125 3.90 | 1ku QFN (RHB) | 32 250 | SMALL T&R ADS
7957
ADS7957 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
ADS7957SDBT Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR   ADS7957SDBT
ADS7957SDBTG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR ADS7957SDBTG4 ADS7957SDBTG4
ADS7957SDBTR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR   ADS7957SDBTR
ADS7957SDBTRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR ADS7957SDBTRG4 ADS7957SDBTRG4
ADS7957SRHBR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-3-260C-168 HR   ADS7957SRHBR
ADS7957SRHBT Green (RoHS & no Sb/Br)  CU NIPDAU  Level-3-260C-168 HR   ADS7957SRHBT
ADS7957 应用技术支持与电子电路设计开发资源下载
  1. ADS7957 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)
ADS7957 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