AD7818
PRODUCTIONTemperature Sensor (On-Chip) Single-Channel, 9 µs, 10-Bit ADC
- Part Models
- 4
- 1ku List Price
- Starting From $4.68
Part Details
- 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
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-and-hold 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).
Documentation
Data Sheet 1
Technical Articles 1
Device Drivers 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7818ARMZ | 8-Lead MSOP | ||
| AD7818ARMZ-REEL | 8-Lead MSOP | ||
| AD7818ARMZ-REEL7 | 8-Lead MSOP | ||
| AD7818ARZ-REEL7 | 8-Lead SOIC |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products |
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| AD7818ARMZ | PRODUCTION | |
| AD7818ARMZ-REEL | PRODUCTION | |
| AD7818ARMZ-REEL7 | PRODUCTION | |
|
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland. |
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| AD7818ARZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
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