AD7643: 18-Bit, 1.25 MSPS PulSAR® A/D Converter
Sheet
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- Documentation
Data Sheet, Application Notes, Tutorials, User Guides, Quality, Lead-Free, Circuit Notes, Videos
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Symbols & FootprintsEvaluation Kits, Symbols & Footprints
- Product Recommendations
& Reference DesignsADI Recommends products to be used with this part, Reference Designs, Companion Products
Sample
& BuyPrice, Packaging, Availability, Disti Inventory, Sample, Purchase
Product Details
myAnalogFEATURES and BENEFITS
- Throughput: 1.25 MSPS
- INL: ±2 LSB typical, ±3 LSB max; ±8 ppm of full scale
- 18-bit resolution with no missing codes
- Dynamic range: 95.5 dB
- SNR: 93.5 dB typical @ 20 kHz (VREF = 2.5 V)
- THD: −112 dB typical @ 20 kHz (VREF = 2.5 V)
- No pipeline delay (SAR architecture)
- 2.048 V internal reference: typ drift 10 ppm/°C; TEMP output
- Differential input range: ±VREF
(VREF up to 2.5 V) - Parallel (18-, 16-, or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface
- SPI®/QSPI™/MICROWIRE™/DSP compatible
- Single 2.5 V supply operation
Functional Block Diagram for AD7643
18-Bit, 1.25 MSPS PulSAR® A/D Converter
Other Diagrams for AD7643
18-Bit, 1.25 MSPS PulSAR® A/D Converter
AD7643 Pin Configuration
Functional Block Diagram for AD7643
Similar Products
Documentation
| Title | Content Type | File Type |
|---|---|---|
| AD7643: 18-Bit, 1.25 MSPS PulSAR™ ADC Data Sheet (Rev 0, 05/2006) (pdf, 676 kB) | Data Sheets | |
|
AN-931: Understanding PulSAR ADC Support Circuitry
(pdf, 299 kB)
This application note discusses in general the pitfalls that occur regularly when using SAR ADCs and, more importantly, how to easily prevent them. |
Application Notes | |
| AN-932: Power Supply Sequencing (pdf, 95 kB) | Application Notes | |
| MS-2210: Designing Power Supplies for High Speed ADC (pdf, 327 kB) | Technical Articles | |
|
High Speed, High Accuracy 14-Bit, 16-Bit, and 18-Bit PulSAR ADCs
(pdf, 3826 kB)
A PulSAR Family Brochure (6/2006) |
Overview | |
| When high performance and low power make the design, ADI converters make the difference. | Overview | HTML |
| RAQs index | Rarely Asked Questions | HTML |
| Glossary of EE Terms | Glossary | HTML |
Evaluation Kits & Symbols & Footprints
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.
Product Recommendations & Reference Designs
Companion Products
Suggested Companion Products
Recommended Driver Amplifiers for the AD7643
- For low bias current, low frequency, we recommend the ADA4627.
- For a fully differential attenuating precision amplifier, we recommend the AD8475.
- For low noise, low distortion, low power, we recommend the ADA4841-1.
- For low power, we suggest the ADR291.
- For lowest cost, we suggest the AD1582.
- For selecting voltage regulator products, use ADIsimPower.
- For selecting supervisor products, use the Supervisor Parametric Search.
Were these recommendations helpful?
Sample & Buy
Price, packaging, availability
| Model | Package | Pins | Temp. Range |
Packing, Qty |
Price*(100-499) | Price*1000 pcs | RoHS | View PCN/ PDN | Check Inventory/ Purchase/Sample |
|---|
Price Table Help
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.
