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

AD7817: 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).

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