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Features
- Charge Balancing ADC
24 Bits, No Missing Codes
±0.0015% Nonlinearity - 2-Channel Programmable Gain Front End
Gains from 1 to 128
Differential Inputs - Low-Pass Filter with Programmable Filter Cutoffs
- Ability to Read/Write Calibration Coefficients
- Bidirectional Microcontroller Serial Interface
- Internal/External Reference Option
- Single- or Dual-Supply Operation
- Low Power (25 mW Typ) with Power-Down Mode (7 mW Typ)
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The AD7710 is a complete analog front end for low frequency measurement applications. The device accepts low level signals directly from a strain gage or transducer and outputs a serial digital word. It employs a sigma-delta conversion technique to realize up to 24 bits of no missing codes performance. The input signal is applied to a proprietary programmable gain front end based around an analog modulator. The modulator output is processed by an on-chip digital filter. The first notch of this digital filter can be programmed via the on-chip control register allowing adjustment of the filter cutoff and settling time.
The part features two differential analog inputs and a differential reference input. Normally, one of the channels will be used as the main channel with the second channel used as an auxiliary input to periodically measure a second voltage. It can be operated from a single supply (by tying the VSS pin to AGND) provided that the input signals on the analog inputs are more positive than -30 mV. By taking the VSS pin negative, the part can convert signals down to -VREF on its inputs. The AD7710 thus performs all signal conditioning and conversion for a single or dual channel system.
The AD7710 is ideal for use in smart, microcontroller based systems. Input channel selection, gain settings and signal polarity can be configured in software using the bidirectional serial port. The AD7710 contains self-calibration, system calibration and background calibration options and also allows the user to read and write the on-chip calibration registers.
CMOS construction ensures low power dissipation and a software programmable power down mode reduces the standby power consumption to only 7 mW typical. The part is available in a 24-pin, 0.3 inch-wide, plastic and hermetic dual-in-line package (DIP) as well as a 24-lead small outline (SOIC) package.
PRODUCT HIGHLIGHTS
- The programmable gain front end allows the AD7710 to accept input signals directly from a strain gage or transducer, removing a considerable amount of signal conditioning.
- The AD7710 is ideal for microcontroller or DSP processor applications with an on-chip control register that allows control over filter cutoff, input gain, channel selection, signal polarity, and calibration modes.
- The AD7710 allows the user to read and write the on-chip calibration registers. This means that the microcontroller has much greater control over the calibration procedure.
- No missing codes ensures true, usable, 23-bit dynamic range coupled with excellent ±0.0015% accuracy. The effects of temperature drift are eliminated by on-chip self-calibration, which removes zero-scale and full-scale errors.
APPLICATIONS
- Weigh Scales
- Thermocouples
- Process Control
- Smart Transmitters
- Chromatography
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AD7710
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Data Sheet 2
Application Note 12
AN-553: Adjusting the Calibration Coefficients on the AD771X Family of ADCs
AN-406: Using the AD771X Family of 24-Bit Sigma-Delta A/D Converters
AN-241: Evaluation Board for the AD7710 High Resolution (24-Bits) Sigma-Delta A/D Converter
AN-397: Electrically Induced Damage to Standard Linear Integrated Circuits:
AN-388: Using Sigma-Delta Converters-Part 1
AN-389: Using Sigma-Delta Converters-Part 2
AN-615: Peak-to-Peak Resolution Versus Effective Resolution (Rev.0)
AN-283: Sigma-Delta ADCs and DACs
AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma-Delta ADC (Rev.E)
AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (Rev.B)
AN-311: How to Reliably Protect CMOS Circuits Against Power Supply Overvoltaging
AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma-Delta ADC
Technical Articles 4
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 |
|---|---|---|---|
| AD7710ANZ |
24-Lead PDIP
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| AD7710AQ |
24-Lead CerDIP (Narrow 0.3 Inch)
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| AD7710ARZ |
24-Lead SOIC (Wide)
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| AD7710ARZ-REEL |
24-Lead SOIC (Wide)
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| AD7710ARZ-REEL7 |
24-Lead SOIC (Wide)
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| AD7710SQ |
24-Lead CerDIP (Narrow 0.3 Inch)
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- AD7710ANZ
- Pin/Package Drawing
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24-Lead PDIP
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- AD7710AQ
- Pin/Package Drawing
-
24-Lead CerDIP (Narrow 0.3 Inch)
- Documentation
-
HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- AD7710ARZ
- Pin/Package Drawing
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24-Lead SOIC (Wide)
- Documentation
-
HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- AD7710ARZ-REEL
- Pin/Package Drawing
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24-Lead SOIC (Wide)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD7710ARZ-REEL7
- Pin/Package Drawing
-
24-Lead SOIC (Wide)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD7710SQ
- Pin/Package Drawing
-
24-Lead CerDIP (Narrow 0.3 Inch)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Mar 7, 2019
- 19_0046
Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
Aug 19, 2009
- 07_0024
Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
AD7710ANZ
PRODUCTION
Nov 7, 2012
- 12_0199
Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
AD7710AQ
AD7710SQ
Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
AD7710AQ
AD7710SQ
Feb 7, 2011
- 10_0003
Halogen Free Material Change for SOIC Wide Body Products Assembled at Amkor
AD7710ARZ
PRODUCTION
AD7710ARZ-REEL
PRODUCTION
AD7710ARZ-REEL7
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Mar 7, 2019
- 19_0046
Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
Aug 19, 2009
- 07_0024
Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
AD7710ANZ
PRODUCTION
Nov 7, 2012
- 12_0199
Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.
Nov 9, 2011
- 11_0050
Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines
Nov 9, 2011
- 11_0182
Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines
Feb 7, 2011
- 10_0003
Halogen Free Material Change for SOIC Wide Body Products Assembled at Amkor
AD7710ARZ
PRODUCTION
AD7710ARZ-REEL
PRODUCTION
AD7710ARZ-REEL7
PRODUCTION
Software & Part Ecosystem
Code Examples
AD7710 Code Examples
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Sigma-Delta ADC Tutorial
