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AD7685: 16-Bit, 250 kSPS PulSAR® ADC in MSOP/QFN
Product Status:Production
Data
Sheet
Sheet
AD7685 Data Sheet Rev C, 08/2011
(pdf 634kB)
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Product Details
Product Status:Production
myAnalogFEATURES and BENEFITS
- 16-bit resolution with no missing codes
- Throughput: 250 kSPS
- INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)
- SINAD: 93.5 dB @ 20 kHz
- THD: −110 dB @ 20 kHz
- Pseudo differential analog input range 0 V to VREF with VREF up to VDD
- No pipeline delay
- Single-supply operation 2.3 V to 5.5 V with 1.8 V to 5 V logic interface
- Serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
- Daisy-chain multiple ADCs, BUSY indicator
- Power dissipation
1.4 μW @ 2.5 V/100 SPS
1.35 mW @ 2.5 V/100 kSPS, 4 mW @ 5 V/100 kSPS - Standby current: 1 nA
Functional Block Diagram for AD7685
16-Bit, 250 kSPS PulSAR® ADC in MSOP/QFN
Other Diagrams for AD7685
16-Bit, 250 kSPS PulSAR® ADC in MSOP/QFN
AD7685 Pin Configuration
Functional Block Diagram for AD7685
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Of Note ...
For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.
Technical Articles:
Documentation
Design Tools,Models,Drivers & Software
| Title | Content Type | File Type |
|---|---|---|
| AD7685 IBIS Models | IBIS Models | HTML |
| BeMicro FPGA Project for CN0194 with Nios driver | FPGA HDL | HTML |
| BeMicro FPGA Project for AD7685 with Nios driver | FPGA HDL | HTML |
| CN0194 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design | FPGA HDL | HTML |
| AD7685 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.
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CN0104:Parametric Measurement Unit and Supporting Components for ATE Applications Using the AD5522 PMU and the AD7685 16-Bit ADC
Benefits & Features
- Quad Parametic Measurement Unit Services 4 DUTs
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Products Used
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Companion Products
Suggested Companion Products
Recommended Driver Amplifiers for the AD7685
- For low frequency, precision, low bias current applications, we recommend the ADA4627-1, ADA4637-1 or the AD8610.
- For precision, low power, low distortion applications, we recommend the ADA4841-1, ADA4896-2 or the AD8031.
- For high frequency, low noise, low distortion applications, we recommend the ADA4899, ADA4897-1, or the AD8021.
- For additional driver amplifier selections, we recommend selecting the product category and filtering on our parametric search tables.
- For high precision, low power, small package, we recommend the ADR391 (2.5V) reference.
- For low noise, high accuracy, low power, we recommend the ADR435 or the ADR4550 family of voltage references.
- For additional voltage reference selections, we recommend filtering on our parametric search tables.
Recommended Digital Isolators for the AD7685
- For SPI Interface, lowest power, 2.5 kVrms isolation, we recommend the ADuM1401.
- For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation, we recommend the ADuM3401.
- For SPI Interface, low power, 5.0 kVrms isolation, we recommend the ADuM4401.
- For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V), we recommend the ADuM3481.
- For additional digital isolator selections, we recommend filtering on our parametric search tables.
- For low dropout regulators with inputs up to 5V, we recommend the low noise ADP151 or the low power ADP160.
- For high current switching regulators with inputs up to 5V, we recommend the low noise ADP2114.
- For selecting voltage regulator products, use ADIsimPower.
- For selecting supervisor products, use the Supervisor Parametric Search.
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Price, packaging, availability
AD7685 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.
