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).
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).
Features and Benefits
| Analog to Digital Converters |
| Document | note |
| AD7817/AD7818: Dual, Low Power CMOS, Analog Front End with DSP Microcomputer Data Sheet (Rev. E) | PDF 1580 kB |
| Document | note |
| AN-101: Cross Plot Generator Allows Quick A/D Converter Evaluation | PDF 280 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD7817ARU Production | 16 ld TSSOP | OTH 96 | -40 to 85C | 0 | 0 | N |
| AD7817ARU-REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 0 | N |
| AD7817ARUZ Production | 16 ld TSSOP | OTH 96 | -40 to 85C | 5.45 | 4.21 | Y |
| AD7817ARUZ-REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 4.21 | Y |
| AD7817ARZ Production | 16 ld SOIC | OTH 48 | -40 to 85C | 5.45 | 4.21 | Y |
| AD7817ARZ-REEL7 Production | 16 ld SOIC | REEL 1000 | -40 to 85C | 0 | 4.26 | Y |
| AD7817BRU Production | 16 ld TSSOP | OTH 96 | -40 to 85C | 8.03 | 6.2 | N |
| AD7817BRU-REEL7 Last Time Buy | 16 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 0 | N |
| AD7817BRUZ Production | 16 ld TSSOP | OTH 96 | -40 to 85C | 7.3 | 5.64 | Y |
| AD7817BRUZ-REEL Production | 16 ld TSSOP | REEL 2500 | -40 to 85C | 0 | 5.64 | Y |
| AD7817BRUZ-REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 5.64 | Y |
| AD7817BRZ Production | 16 ld SOIC | OTH 48 | -40 to 85C | 7.3 | 5.64 | Y |
| AD7817BRZ-REEL Production | 16 ld SOIC | REEL 2500 | -40 to 85C | 0 | 5.64 | Y |
| AD7817BRZ-REEL7 Production | 16 ld SOIC | REEL 1000 | -40 to 85C | 0 | 5.64 | Y |
| AD7817SR Production | 16 ld SOIC | OTH 48 | -40 to 85C | 0 | 0 | N |
