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AD7622: 16-Bit, 1.5 LSB INL, 2 MSPS PulSAR® ADC Data Sheet (Rev. A)6/1/2006PDF803 kB
Alternative Parts
Overview
Features and Benefits
- Throughput
2 MSPS (wideband warp and warp mode)
1.5 MSPS (normal mode) - INL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm of FSR)
- 16-bit resolution with no missing codes
- Dynamic range: 92.5 dB typical
- SINAD: 91 dB minimum @ 20 kHz (VREF = 2.5 V)
- THD: −115 dB typical @ 20 kHz (VREF = 2.5 V)
- 2.048 V internal reference: typical drift 8 ppm/°C; TEMP output
- Differential input range: ±VREF (VREF up to 2.5 V)
- No pipeline delay (SAR architecture)
- Parallel (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
Product Details
The AD7622 is a 16-bit, 2 MSPS, charge redistribution SAR, fully differential, analog-to-digital converter (ADC) that operates from a single 2.5 V power supply. The part contains a high speed, 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. It features two very high sampling rate modes (wideband warp and warp) and a fast mode (normal) for asynchronous rate applications. The AD7622 is hardware factory calibrated and tested to ensure ac parameters, such as signal-to-noise ratio (SNR), in addition to the more traditional dc parameters of gain, offset, and linearity. The AD7622 is available in Pb-free only packages with operation specified from −40°C to +85°C.
APPLICATIONS
- Medical instruments
- High speed data acquisition/high dynamic data acquisition
- Digital signal processing
- Spectrum analysis
- Instrumentation
- Communications
- ATE
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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AN-932: Power Supply Sequencing2/1/2008
Product Recommendations
AD7622 Companion Parts
Recommended Driver Amplifiers
- For a fully differential attenuating precision amplifier: AD8475.
- For low noise, high gain bandwidth: AD8021, ADA4899-1, AD8022.
- For single-ended to differential driver applications: AD8139, ADA4930-1.
- For low noise, low distortion, low power: ADA4841-1.
Recommended External Voltage References
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
Sample & Buy
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Evaluation Boards
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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.