Product Summary
The AD7708/AD7718 are complete analog front-ends for low frequency measurement applications. The AD7718 contains a 24-bit Σ-? ADC with PGA and can be configured as 4/5 fullydifferential input channels or 8/10 pseudo-differential input channels. Two pins on the device are configurable as analog
inputs or reference inputs. The AD7708 is a 16-bit version of the AD7718. Input signal ranges from 20 mV to 2.56 V can be directly converted using these ADCs. Signals can be converted directly from a transducer without the need for signal conditioning.
Parametrics
ABSOLUTE MAXIMUM RATINGS:(TA = 25℃ unless otherwise noted)
- AVDD to AGND:-0.3 V to +7 V
- AVDD to DGND:-0.3 V to +7 V
- DVDD to AGND:-0.3 V to +7 V
- DVDD to DGND:-0.3 V to +7 V
- AGND to DGND:-0.05 V to +0.05 V
- AVDD to DVDD:-5 V to +5 V
- Analog Input Voltage to AGND:-0.3 V to AVDD +0.3 V
- Reference Input Voltage to AGND:-0.3 V to AVDD +0.3 V
- Total AIN/REFIN Current (Indefinite):30 mA
- Digital Input Voltage to DGND:-0.3 V to DVDD +0.3 V
- Digital Output Voltage to DGND:-0.3 V to DVDD +0.3 V
- Operating Temperature Range:-40℃ to +85℃
- Storage Temperature Range:-65℃ to +150℃
- Junction Temperature:150℃
- SOIC Package:θJA Thermal Impedance:71.4℃/W;θJC Thermal Impedance:23℃/W
- TSSOP Package:θJA Thermal Impedance:97.9℃/W;θJC Thermal Impedance:14℃/W
- Lead Temperature, Soldering:Vapor Phase (60 sec): 215℃;Infrared (15 sec):220℃
Features
- 8-/10-Channel, High Resolution - ADCs
- AD7708 Has 16-Bit Resolution
- AD7718 Has 24-Bit Resolution
- Factory-Calibrated
- Single Conversion Cycle Setting
- Programmable Gain Front End
- Simultaneous 50 Hz and 60 Hz Rejection
- VREF Select? Allows Absolute and Ratiometric
- Measurement Capability
- Operation Can Be Optimized for Analog Performance (CHOP=0) or Channel Throughput (CHOP=1)
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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AD7718BRZ |
IC ADC 24BIT R-R 8/10CH 28SOIC |
Data Sheet |
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AD7718BRZ-REEL |
IC ADC 24BIT R-R 8/10CH 28SOIC |
Data Sheet |
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AD7718BRZ-REEL7 |
IC ADC 24BIT R-R 8/10CH 28SOIC |
Data Sheet |
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