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Features
- RMS noise: 65 nV
- Instrumentation amp
- Temperature sensor
- Internal clock oscillator
- Simultaneous 50 Hz/60 Hz rejection
- Update rate range: 4.17 Hz to 123 Hz
- Current: 250 µA typ
- Power-down: 1 µA
- Power supply range: 2.7 V to 5.25 V
- –40°C to +85°C temperature range
- Independent interface power supply
- 16-lead TSSOP
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The AD7796/AD7797 are complete, analog front ends for high precision, bridge sensor applications such as weigh scales. The AD7796/AD7797 contain a Σ-∆ ADC capable of 16-/24-bit resolution, respectively. The on-chip instrumentation amplifier has a fixed gain of 128, allowing small amplitude signals such as those from bridge sensors to be directly interfaced to the ADC.
Each device has one differential input and contains a temperature sensor that is internally connected to the ADC. This sensor can be used to perform temperature compensation of the bridge.
The devices can be operated with the internal clock or an external clock. The output data rate from the devices is software-programmable and can be varied from 4.17 Hz to 123 Hz.
The AD7796/AD7797 operate with a power supply from 2.7 V to 5.25 V. Each device consumes a current of 250 µA typical and is housed in a 16-lead TSSOP.
Applications
- Weigh scales
- Strain gages
- Industrial process control
- Instrumentation
- Portable instrumentation
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AD7797
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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 |
|---|---|---|---|
| AD7797BRUZ |
16-Lead TSSOP
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| AD7797BRUZ-REEL |
16-Lead TSSOP
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- AD7797BRUZ
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16-Lead TSSOP
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HTML
Reliablity Data
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SamacSys
- AD7797BRUZ-REEL
- Pin/Package Drawing
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16-Lead TSSOP
- 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
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Product Lifecycle
PCN
Jan 20, 2012
- 11_0218
Halogen Free Material Change for Certain TSSOP Products at Carsem
AD7797BRUZ
PRODUCTION
AD7797BRUZ-REEL
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Jan 20, 2012
- 11_0218
Halogen Free Material Change for Certain TSSOP Products at Carsem
AD7797BRUZ
PRODUCTION
AD7797BRUZ-REEL
PRODUCTION
Software & Part Ecosystem
Device Drivers
Looking for Evaluation Software? You can find it here
| Parts | Product Life Cycle | Description |
|---|---|---|
|
RECOMMENDED FOR NEW DESIGNS |
4-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference |
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits 1
EVAL-AD7797
AD7797 Evaluation Baord
Product Detail
The EVAL-AD7797EBZ is a fully featured evaluation Board for the AD7797. The evaluation board can be connected to a PC via a standard USB interface. Software is provided enabling the user to perform detailed analysis of the ADC's performance.
Please note: This Evaluation software does not run on Windows 8 or Windows 10 (USB driver is non-compliant with OS >Windows 7).
Resources
Evaluation Kits1
Tools & Simulations 2
Design Tool
Design Tool
Sigma-Delta ADC Tutorial
