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AD7817:  Temperature Sensor (On Chip) 4-Channel, 9 µs, 10-Bit ADC

AD7817 功能框图The AD7818 and AD7817 are 10-bit, single- and 4-channel A/D converters with on-chip temperature sensor that can operate from a single 2.7 V to 5.5 V power supply. Each part contains a 9 μs successive-approximation converter based around a capacitor DAC, an on-chip temperature sensor with an accuracy of ±2°C, an on-chip clock oscillator, inherent track-andhold functionality and an on-chip reference (2.5 V). The AD7816 is a temperature monitoring only device in a SOIC/MSOP package.The on-chip temperature sensor of the AD7817 and AD7818 can be accessed via Channel 0. When Channel 0 is selected and a conversion is initiated, the resulting ADC code at the end of the conversion gives a measurement of the ambient temperature with a resolution of ±0.25°C. See Temperature Measurement section of this data sheet.The AD7816, AD7817, and AD7818 have a flexible serial interface that allows easy interfacing to most microcontrollers. The interface is compatible with the Intel 8051, Motorola SPI® and QSPI™ protocols and National Semiconductors MICROWIRE™ protocol. For more information refer to the Serial Interface section of this data sheet.The AD7817 is available in a narrow body 0.15" 16-lead small outline IC (SOIC), in a 16-lead, thin shrink small outline package (TSSOP), while the AD7816/AD7818 come in an 8-lead small outline IC (SOIC) and an 8-lead microsmall outline IC (MSOP).

AD7817 特点
  • 10-Bit ADC with 9 µs Conversion Time
  • One (AD7818) and Four (AD7817) Single-Ended Analog Input Channels
  • The AD7816 Is a Temperature Measurement Only Device
  • On-Chip Temperature Sensor Resolution of 0.25°C
    ±2°C Error from -40°C to +85°C
    -55°C to +125°C Operating Range
  • Wide Operating Supply Range 2.7 V to 5.5 V
  • Inherent Track-and-Hold Functionality
  • On-Chip Reference (2.5 V _ 1%)
  • Over-Temperature Indicator
  • Automatic Power-Down at the End of a Conversion
  • Low Power Operation
    4 µW at a Throughput Rate of 10 SPS
    40 µW at a Throughput Rate of 1 kSPS
    400 µW at a Throughput Rate of 10 kSPS
  • Flexible Serial Interface
AD7817 技术指标
  • Output Type: Digital
  • Sensor Output: MICROWIRE (TM),QSPI (TM),SPI (TM)
  • Temp Res(°C/LSB): 0.25°C/LSB
  • Supply Voltage Range: +2.7V to +5.5V
  • Temp Range(s): -40 to +85
AD7817 芯片订购指南
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs
AD7817ARU 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 4.84 $ 3.79
AD7817ARU-REEL 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 2500 - $ 3.79
AD7817ARU-REEL7 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 1000 - $ 3.79
AD7817ARUZ 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 4.41 $ 3.45
AD7817ARUZ-REEL 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 2500 - $ 3.45
AD7817ARUZ-REEL7 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 1000 - $ 3.45
AD7817ARZ 产品状态: 量产 16 ld SOIC 16 商业 Tube, 48 $ 4.41 $ 3.45
AD7817ARZ-REEL 产品状态: 量产 16 ld SOIC 16 商业 Reel, 2500 - $ 3.49
AD7817ARZ-REEL7 产品状态: 量产 16 ld SOIC 16 商业 Reel, 1000 - $ 3.49
AD7817BR-REEL7 产品状态: 停产 16 ld SOIC 16 商业 Reel, 1000 - -
AD7817BRU 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 6.48 $ 5.07
AD7817BRU-REEL 产品状态: 停产 16 ld TSSOP 16 工业 Reel, 2500 - -
AD7817BRU-REEL7 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 1000 - $ 5.07
AD7817BRUZ 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 5.91 $ 4.62
AD7817BRUZ-REEL 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 2500 - $ 4.62
AD7817BRUZ-REEL7 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 1000 - $ 4.62
AD7817BRZ 产品状态: 量产 16 ld SOIC 16 商业 Tube, 48 $ 5.91 $ 4.62
AD7817BRZ-REEL 产品状态: 量产 16 ld SOIC 16 商业 Reel, 2500 - $ 4.62
AD7817BRZ-REEL7 产品状态: 量产 16 ld SOIC 16 商业 Reel, 1000 - $ 4.62
AD7817SR 产品状态: 量产 16 ld SOIC 16 商业 Tube, 48 $ 7.74 $ 6.06
AD7817SR-REEL 产品状态: 量产 16 ld SOIC 16 商业 Reel, 2500 - $ 6.06
AD7817SR-REEL7 产品状态: 量产 16 ld SOIC 16 商业 Reel, 1000 - $ 6.06
AD7817 应用技术支持与电子电路设计开发资源下载
  1. AD7817 数据手册DataSheet下载 .PDF
  2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
  3. ADC模数转换器选型指南 . PDF