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AD7817SR:  Temperature Sensor (On Chip) 4-Channel, 9 µs, 10-Bit ADC

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).

AD7817SR 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

AD7817SR 功能框图

AD7817 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD7817ARU	量产	16 ld TSSOP	16	工业
AD7817ARU-REEL	量产	16 ld TSSOP	16	工业
AD7817ARU-REEL7	量产	16 ld TSSOP	16	工业
AD7817ARUZ	量产	16 ld TSSOP	16	工业
AD7817ARUZ-REEL	量产	16 ld TSSOP	16	工业
AD7817ARUZ-REEL7	量产	16 ld TSSOP	16	工业
AD7817ARZ	量产	16 ld SOIC	16	商业
AD7817ARZ-REEL	量产	16 ld SOIC	16	商业
AD7817ARZ-REEL7	量产	16 ld SOIC	16	商业
AD7817BR-REEL7	量产	16 ld SOIC	16	商业
AD7817BRU	量产	16 ld TSSOP	16	工业
AD7817BRU-REEL	量产	16 ld TSSOP	16	工业
AD7817BRU-REEL7	量产	16 ld TSSOP	16	工业
AD7817BRUZ	量产	16 ld TSSOP	16	工业
AD7817BRUZ-REEL	量产	16 ld TSSOP	16	工业
AD7817BRUZ-REEL7	量产	16 ld TSSOP	16	工业
AD7817BRZ	量产	16 ld SOIC	16	商业
AD7817BRZ-REEL	量产	16 ld SOIC	16	商业
AD7817BRZ-REEL7	量产	16 ld SOIC	16	商业
AD7817SR	量产	16 ld SOIC	16	商业
AD7817SR-REEL	量产	16 ld SOIC	16	商业
AD7817SR-REEL7	量产	16 ld SOIC	16	商业

AD7817SR 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