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AD7719: Low Voltage, Low Power, 16-/24-Bit, Dual Sigma Delta ADC
Product Status:Production
Data
Sheet
Sheet
AD7719 Data Sheet Rev A, 04/2003
(pdf 509kB)
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Product Details
Product Status:Production
myAnalogFEATURES and BENEFITS
High Resolution Σ-Δ ADCs
- 2 Independent ADCs (16- and 24-Bit Resolution)
- Factory-Calibrated (Field Calibration Not Required)
- Output Settles in 1 Conversion Cycle (Single Conversion Mode)
- Programmable Gain Front End
- Simultaneous Sampling and Conversion of 2 Signal Sources
- Separate Reference Inputs for Each Channel
- Simultaneous 50 Hz and 60 Hz Rejection at 20 Hz Update Rate
ISOURCE Select™
- 24-Bit No Missing Codes—Main ADC
- 13-Bit p-p Resolution @ 20 Hz, 20 mV Range
- 18-Bit p-p Resolution @ 20 Hz, 2.56 V Range
Interface
- 3-Wire Serial
- SPI®, QSPI™, MICROWIRE™, and DSP Compatible
- Schmitt Trigger on SCLK
Functional Block Diagram for AD7719
Low Voltage, Low Power, 16-/24-Bit, Dual Sigma Delta ADC
Functional Block Diagram for AD7719
Similar Products
Documentation
| Title | Content Type | File Type |
|---|---|---|
| AD7719: Low Voltage, Low Power, Factory-Calibrated 16-/24- Bit Dual Σ-Δ ADC Data Sheet (Rev A, 04/2003) (pdf, 509 kB) | Data Sheets | |
|
AN-610: The PGA on Sigma-Delta ADCs
(pdf, 152 kB)
The AD7708/AD7718,AD7709,AD7719,AD7782/AD7783 high resolution Sigma-Delta ADCs all feature a Programmable Gain Amplifier (PGA)at the input to the Sigma-Delta modulator. This Application Note discusses the use and benefits of this PGA. |
Application Notes | |
| AN-311: How to Reliably Protect CMOS Circuits Against Power Supply Overvoltaging (pdf, 217 kB) | Application Notes | |
| AN-607: Selecting a Low Bandwidth (<15 kSPS) Sigma-Delta ADC (pdf, 222 kB) | Application Notes | |
|
AN-615: Peak-to-Peak Resolution Versus Effective Resolution
(pdf, 70 kB)
This application note describes effective resolution and peak-to-peak resolution and highlights the difference between these two specifications. |
Application Notes | |
|
AN-611: 50 Hz/60Hz Rejection on Sigma-Delta ADCs
(pdf, 360 kB)
Rejection of 50 Hz and 60 Hz interference is a requirement in many industrial settings. This Application Note outlines how the AD7708/AD7718,AD7709,AD7719, AD7782/AD7783 Sigma-Delta ADCs are used for optimal rejection of these frequencies. |
Application Notes | |
|
AN-609: Chopping on Sigma-Delta ADCs
(pdf, 232 kB)
Chopping is a technique that can be used to cancel offset voltages and other low frequency errors. This Application Note outlines how chopping is implemented on the AD7708/AD7718,AD7709,AD7719,AD7782/AD7783 high resolution Sigma-Delta ADCs and discusses the resulting benefits it brings. |
Application Notes | |
|
AN-608: Input Buffers on Sigma-Delta ADCs
(pdf, 284 kB)
The AD7708/AD7718,AD7709,AD7719,AD7782/AD7783 high resolution Sigma-Delta ADCs feature a high impedance buffer at the input to the ADC. This application note discusses the significant benefits and various system design considerations that result from the integration of on-chip buffers. |
Application Notes | |
|
AN-397: Electrically Induced Damage to Standard Linear Integrated Circuits:
(pdf, 149 kB)
The Most Common Causes and the Associated Fixes to Prevent Reoccurrence |
Application Notes | |
| AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (pdf, 76 kB) | Application Notes | |
|
AN-389: Using Sigma-Delta Converters-Part 2
(pdf, 590 kB)
When to Use/How to Use Sigma-Delta ADCs; Continuation of Part 1 Discussion. |
Application Notes | |
|
AN-388: Using Sigma-Delta Converters-Part 1
(pdf, 590 kB)
When to Use/How to Use Sigma-Delta ADCs |
Application Notes | |
|
AN-283: Sigma-Delta ADCs and DACs
(pdf, 1699 kB)
Overview of Sigma-Delta Concepts: Oversampling, Noise Shaping Using the Sigma-Delta Modulator, Digital Filtering and Decimation. |
Application Notes | |
| MS-2210: Designing Power Supplies for High Speed ADC (pdf, 327 kB) | Technical Articles | |
|
Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter
(Electronic Design, 1/12/06) |
Technical Articles | HTML |
|
Designing and Applying Remote Field Instruments
by Albert O' Grady and Jim Ryan, Analog Devices B.V. ...Good things can come in small packages because of on-chip capabilities (Control Engineering, September 1998) |
Technical Articles | HTML |
| Circuit Suggestions Using Features and Functionality of New Sigma-Delta ADCs | Technical Articles | HTML |
|
Improved Data Acquisition Using a New Monolithic Dual-ADC Front End
(Analog Dialogue, Vol. 35, No. 2, March-May, 2001) |
Analog Dialogue | HTML |
|
Ask the Applications Engineer-27: What problems am I most likely to run into when instrumenting an industrial system?
(Analog Dialogue, Vol. 33, No. 2, February, 1999) |
Analog Dialogue | HTML |
| Sigma Delta ADCs (< 15 kSPS) | Product Selection Guide | HTML |
| RAQs index | Rarely Asked Questions | HTML |
| Glossary of EE Terms | Glossary | HTML |
Design Tools,Models,Drivers & Software
| Title | Content Type | File Type |
|---|---|---|
|
Sigma-Delta ADC Tutorial
An interactive illustration showing the behavior of an idealized sigma-delta A/D converter. |
Utilities and Conversions | HTML |
|
Sigma Delta Register Configuration Assistant
Easily program the configuration registers for the sigma delta ADCs. Use pull-down menus to determine the correct hex values to load into the registers, and generate pseudo-code. |
Design Calculators | HTML |
Evaluation Kits & Symbols & Footprints
Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing
Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
Sample & Buy
Price, packaging, availability
AD7719 Model Options
| Model | Package | Pins | Temp. Range |
Packing, Qty |
Price*(100-499) | Price*1000 pcs | RoHS | View PCN/ PDN | Check Inventory/ Purchase/Sample |
|---|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
