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AD7674: 18-Bit, 2.5 LSB INL, 800 kSPS, SAR ADC Data Sheet (Rev. B)6/23/2009PDF511 K
Overview
Features and Benefits
- 18-bit resolution with no missing codes
- No pipeline delay (SAR architecture)
- Differential input range: ±VREF (VREF up to 5 V)
- Throughput
- 800 kSPS (warp mode)
- 666 kSPS (normal mode)
- 570 kSPS (impulse mode)
- INL: ±2.5 LSB max (±9.5 ppm of full scale)
- Dynamic range : 103 dB typ (VREF = 5 V)
- SINAD: 100 dB typ at 2 kHz (VREF = 5 V)
- Parallel (18-, 16-, or 8-bit bus) and serial 5 V/3 V interface
- SPI/QSPI™/MICROWIRE/DSP compatible
- On-board reference buffer
- Single 5 V supply operation
- See data sheet for additional features
Product Details
The AD7674 is an 18-bit, 800 kSPS, charge redistribution, successive approximation register (SAR) fully differential analog-to-digital converter (ADC) that operates on a single 5 V power supply. The device contains a high speed, 18-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports.
The device is available in a 48-lead LQFP or a 48-lead LFCSP with operation specified from −40°C to +85°C.
Product Highlights
- High Resolution, Fast Throughput. The AD7674 is an 800 kSPS, charge redistribution, 18-bit, SAR ADC (no latency).
- Excellent Accuracy. The AD7674 has a maximum integral nonlinearity of 2.5 LSB with no missing 18-bit codes.
- Serial or Parallel Interface. Versatile parallel (18-, 16- or 8-bit bus) or 3-wire serial interface arrangement compatible with both 3 V and 5 V logic.
Applications
- CT scanners
- High dynamic data acquisition
- Geophone and hydrophone sensors
- ∑-∆ replacement (low power, multichannel)
- Instrumentation
- Spectrum analysis
- Medical instruments
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)2/14/2015PDF299 kB
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8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog3/8/2008PDF1885 kB
Design Resources
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.
PCN-PDN Information
Support & Discussions
AD7674 Discussions
Sample & Buy
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.