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AD7687: 16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN
Product Status:Production
Data
Sheet
Sheet
AD7687 Data Sheet Rev B, 08/2011
(pdf 723kB)
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DetailsFeatures, Specifications, Status, Price, Diagrams, Similar Products, Support
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Data Sheet, Application Notes, Tutorials, User Guides, Quality, Lead-Free, Circuit Notes, Videos
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Drivers & SoftwareDesign Tools, Device Drivers, SPICE, Models, Software
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& Reference DesignsADI Recommends products to be used with this part, Reference Designs, Companion Products
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Product Details
Product Status:Production
myAnalogFEATURES and BENEFITS
- 16 Bits Resolution with No Missing 16-Bit Codes
- Throughput: 250 kSPS
- INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR)
- Dynamic range: 96.5 dB
- S/(N + D): 95.5 dB @ 20 kHz
- THD: −118 dB @ 20 kHz
- True differential analog input range ±VREF 0 V to VREF with VREF up to VDD on both inputs
- No pipeline delay
- Single-supply 2.3 V to 5.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
- Serial interface SPI®/QSPI™/MICROWIRE™/DSP-compatible
- Daisy-chain multiple ADCs and BUSY indicator
- Power dissipation: 1.35 mW @ 2.5 V/100 kSPS, 4 mW @ 5 V/100 kSPS, and 1.4 μW @ 2.5 V/100 SPS
Functional Block Diagram for AD7687
16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN
Other Diagrams for AD7687
16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN
10-Lead MSOP
10-Lead QFN (LFCSP)
Functional Block Diagram for AD7687
Similar Products
Documentation
| Title | Content Type | File Type |
|---|---|---|
| AD7687: 16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN Data Sheet (Rev B, 08/2011) (pdf, 723 kB) | Data Sheets | |
| AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators (pdf, 640 kB) | Application Notes | |
|
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 | |
| AN-935: Designing an ADC Transformer-Coupled Front End (pdf, 363 kB) | Application Notes | |
| CN-0225: High Impedance, High CMR, ±10 V Analog Front End Signal Conditioner for Industrial Process Control and Automation (pdf, 640 kB) | Circuit Note | |
| MT-074: Differential Drivers for Precision ADCs (pdf, 249 kB) | Tutorials | |
| UG-340: Evaluation Board for the 10-Lead Family 14-/16-/18-Bit PulSAR ADCs (pdf, 4636 kB) | User Guides | |
| MS-2210: Designing Power Supplies for High Speed ADC (pdf, 327 kB) | Technical Articles | |
| MS-2022: Seven Steps to Successful Analog-to-Digital Signal Conversion (Noise Calculation for Proper Signal Conditioning) (pdf, 277 kB) | Technical Articles | |
| MS-2124: Understanding AC Behaviors of High Speed ADCs (pdf, 276 kB) | Technical Articles | |
|
Nine Often Overlooked ADC Specifications
(pdf, 445 kB)
Analog-to-digital converters (ADCs) have many specifications; some are more important for a given application than others. Understanding these specifications and controlling external devices affecting the ADC will lead to better performance. |
Technical Articles | |
|
High Speed Op Amp Drives a 16-Bit, 1-MSPS Differential-Input A/D Converter
(Analog Dialogue, Vol. 36, No. 6, November/December 2002) |
Analog Dialogue | HTML |
|
Low-Power Data Conversion Technology Enhances Portability
(Electropages, 10/5/2006) |
Product Reviews | HTML |
|
Lowest-Power 16-Bit ADC Optimizes Portable Designs
(eeProductCenter, 10/4/2006) |
Product Reviews | HTML |
|
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 |
|
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog
(pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications. |
Overview | |
| RAQs index | Rarely Asked Questions | HTML |
| Glossary of EE Terms | Glossary | HTML |
Design Tools,Models,Drivers & Software
| Title | Content Type | File Type |
|---|---|---|
| AD7685 IBIS Models | IBIS Models | HTML |
| BeMicro FPGA Project for AD7687 with Nios driver | FPGA HDL | HTML |
| AD7687 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design | FPGA HDL | 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.
Product Recommendations & Reference Designs
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Updated 11/2011
CN0225:High Impedance, High CMR, ±10 V Analog Front End Signal Conditioner for Industrial Process Control and Automation
Benefits & Features
- Analog front end for +/- 10V inputs
- High common mode rejection
- 16 bit resolution
- Board space reduction
Products Used
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HARDWARE
CN0225:High Impedance, High CMR, ±10 V Analog Front End Signal Conditioner for Industrial Process Control and Automation
Companion Products
Suggested Companion Products
Recommended Driver Amplifiers for the AD7687
- For low frequency and low bias current, we recommend the ADA4627-1.
- For low noise and low power applications, we recommend the ADA4841-1, ADA4841-2 or the ADA4941-1.
- For translating +/- 10V signals to 4V, low distortion, fast settling, we recommend the AD8275.
- For best performance, we recommend the ADR435 (5V).
- For selecting voltage regulator products, use ADIsimPower.
- For selecting supervisor products, use the Supervisor Parametric Search.
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Price, packaging, availability
AD7687 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.
