Datasheet for AD7818:
- Manufacturer Part Number : AD7818
- Manufacturer : AD
- Description : Temperature Sensor (On-Chip) Single-Channel, 9 µs, 10-Bit ADC
- Series : AD7818
- Reference Price : USD 2.64
- Our Price : We have a better price, contact us by email
- Product Type : Precision A/D Converters
- Function : Single Channel A/D Converters
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD7818
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- 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-holdfunctionality 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).
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
