AD7793
PRODUCTION3-Channel, Low Noise, Low Power, 24-Bit Sigma Delta ADC with On-Chip In-Amp and Reference
- Part Models
- 2
- 1ku List Price
- Starting From $7.19
Part Details
- Up to 23 bits effective resolution
- RMS noise
- 40 nV @ 4.17 Hz
- 85 nV @ 16.7 Hz
- Current: 400 μA typical
- Power-down: 1 μA maximum
- Update rate: 4.17 Hz to 470 Hz
- 3 differential inputs
The AD7792/AD7793 are low power, low noise, complete analog front ends for high precision measurement applications. The AD7792/AD7793 contain a low noise 16-/24-bit Σ-Δ ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 40 nV when the update rate equals 4.17 Hz.
The devices contain a precision low noise, low drift internal band gap reference and can accept an external differential reference. Other on-chip features include programmable excitation current sources, burnout currents, and a bias voltage generator. The bias voltage generator sets the common-mode voltage of a channel to AVDD/2
The devices can be operated with either the internal clock or an external clock. The output data rate from the parts is software-programmable and can be varied from 4.17 Hz to 470 Hz.
The parts operate with a power supply from 2.7 V to 5.25 V. They consume a current of 400 μA typical and are housed in a 16-lead TSSOP package.
Applications
- Thermocouple measurements
- RTD measurements
- Thermistor measurements
- Gas analysis
- Industrial process control
- Instrumentation
- Portable instrumentation
- Blood analysis
- Smart transmitters
- Liquid/gas chromatography
- 6-digit DVM
Documentation
Data Sheet 1
User Guide 1
Application Note 15
Technical Articles 1
Frequently Asked Question 1
Circuit Note 2
Device Drivers 3
Analog Dialogue 4
Webcast 1
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 |
|---|---|---|---|
| AD7793BRUZ | 16-Lead TSSOP | ||
| AD7793BRUZ-REEL | 16-Lead TSSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 20, 2024 - 23_0143 Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process |
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| AD7793BRUZ | PRODUCTION | |
| AD7793BRUZ-REEL | PRODUCTION | |
|
Jan 20, 2012 - 11_0218 Halogen Free Material Change for Certain TSSOP Products at Carsem |
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| AD7793BRUZ | PRODUCTION | |
| AD7793BRUZ-REEL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 3
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| isoPower 3 | ||
| ADUM5401 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (3/1 channel directionality) |
| ADUM5402 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (2/2 channel directionality) |
| ADUM5403 | PRODUCTION | Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (1/3 channel directionality) |
| Series Voltage References 4 | ||
| ADR441 | PRODUCTION | Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source |
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| AD1582 | PRODUCTION | 2.5V Micropower, Precisions Series Mode Voltage References |
| ADR391 | PRODUCTION | 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
| Shunt Voltage References 1 | ||
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |
| Standard Digital Isolators 5 | ||
| ADUM1400 | PRODUCTION | Quad-Channel Digital Isolator (4/0 Channel Directionality) |
| ADUM1200 | PRODUCTION | Dual-Channel Digital Isolator (2/0 Channel Directionality) |
| ADUM7440 | PRODUCTION | 1 kV RMS Quad-Channel Digital Isolator |
| ADUM7441 | PRODUCTION | 1 kV RMS Quad-Channel Digital Isolator |
| ADUM7442 | PRODUCTION | 1 kV RMS Quad-Channel Digital Isolator |
| USB Isolators 1 | ||
| ADUM4160 | PRODUCTION | Full/Low Speed USB Digital Isolator |
| Parts | Product Life Cycle | Description |
|---|---|---|
| AD7124-4 | RECOMMENDED FOR NEW DESIGNS | 4-Channel, Low Noise, Low Power, 24-Bit, Sigma-Delta ADC with PGA and Reference |
Tools & Simulations
Design Tool 1
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter.
Open ToolEvaluation Kits
AD7793 Evaluation Board
Resources
Software
Reference Designs
3-Channel Thermocouple Temperature Measurement System with 0.25 ° C Accuracy
Part Used
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Design & Integration Tools
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Part Used
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Design & Integration Tools
Low Power, Temperature Compensated Bridge Signal Conditioner and Driver