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)

  1. AVDD to AGND:-0.3 V to +7 V
  2. AVDD to DGND:-0.3 V to +7 V
  3. DVDD to AGND:-0.3 V to +7 V
  4. DVDD to DGND:-0.3 V to +7 V
  5. AGND to DGND:-0.05 V to +0.05 V
  6. AVDD to DVDD:-5 V to +5 V
  7. Analog Input Voltage to AGND:-0.3 V to AVDD +0.3 V
  8. Reference Input Voltage to AGND:-0.3 V to AVDD +0.3 V
  9. Total AIN/REFIN Current (Indefinite):30 mA
  10. Digital Input Voltage to DGND:-0.3 V to DVDD +0.3 V
  11. Digital Output Voltage to DGND:-0.3 V to DVDD +0.3 V
  12. Operating Temperature Range:-40℃ to +85℃
  13. Storage Temperature Range:-65℃ to +150℃
  14. Junction Temperature:150℃
  15. SOIC Package:θJA Thermal Impedance:71.4℃/W;θJC Thermal Impedance:23℃/W
  16. TSSOP Package:θJA Thermal Impedance:97.9℃/W;θJC Thermal Impedance:14℃/W
  17. Lead Temperature, Soldering:Vapor Phase (60 sec): 215℃;Infrared (15 sec):220℃


Features

  1. 8-/10-Channel, High Resolution - ADCs
  2. AD7708 Has 16-Bit Resolution
  3. AD7718 Has 24-Bit Resolution
  4. Factory-Calibrated
  5. Single Conversion Cycle Setting
  6. Programmable Gain Front End
  7. Simultaneous 50 Hz and 60 Hz Rejection
  8. VREF Select? Allows Absolute and Ratiometric
  9. Measurement Capability
  10. Operation Can Be Optimized for Analog Performance (CHOP=0) or Channel Throughput (CHOP=1)

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
AD7718BRZ
AD7718BRZ


IC ADC 24BIT R-R 8/10CH 28SOIC

Data Sheet

0-1: $6.44
1-10: $5.85
10-100: $4.98
100-250: $4.54
250-500: $4.24
500-1000: $3.90
AD7718BRZ-REEL
AD7718BRZ-REEL


IC ADC 24BIT R-R 8/10CH 28SOIC

Data Sheet

0-1000: $3.90
AD7718BRZ-REEL7
AD7718BRZ-REEL7


IC ADC 24BIT R-R 8/10CH 28SOIC

Data Sheet

0-400: $4.54