Overview
Features and Benefits
- High performance
- True differential analog input range: ±VREF
- 0 V to VREF with VREF between 2.5 V and 5 V
- Throughput: 1 MSPS/500 kSPS options
- Zero latency architecture
- 16-bit resolution with no missing codes
- INL: ±0.4 LSB typical, ±1 LSB maximum
- Dynamic range: 95.5 dB, VREF = 5 V
- SNR: 94 dB at fIN = 1 kHz, VREF = 5 V
- THD: −118.5 dB at fIN = 1 kHz, VREF = 5 V
- SINAD: 93.5 dB at fIN = 1 kHz, VREF = 5 V
- True differential analog input range: ±VREF
- Low power dissipation
- Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
- AD7916: 2 mW at 500 kSPS (VDD only) 3.7 mW at 500 kSPS (total)
- 70 μW at 10 kSPS
- Proprietary serial interface: SPI-/QSPI-/MICROWIRE™-/DSP-compatible1
- 10-lead packages: MSOP and 3 mm × 3 mm LFCSP
- Wide operating temperature range: −40°C to +125°C
Product Details
The AD7915/AD7916 are 16-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. They contain a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7915/AD7916 sample the voltage difference between the IN+ and IN− pins. The voltages on these pins typically swing in opposite phases between 0 V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The power consumption of the AD7915/AD7916 scales linearly with throughput.
The AD7915/AD7916 are serial peripheral interface (SPI) compatible, which features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus. They are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic using the separate VIO supply.
The AD7915/AD7916 are available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +125°C.APPLICATIONS
- Automated test equipment
- Data acquisition systems
- Medical instruments
- Machine automation
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)2/14/2015PDF363 kB
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AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. C)2/14/2015PDF427 K
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AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)2/14/2015PDF299 kB
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AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators (Rev. 0)2/14/2015PDF640 kB
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AN-877: Interfacing to High Speed ADCs via SPI (Rev. B)11/9/2007PDF318K
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MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design2/14/2015PDF152 kB
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MT-031: Grounding Data Converters and Solving the Mystery of "AGND" and "DGND"3/20/2009PDF144 kB
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MT-001: Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB", and Why You Should Care3/4/2009PDF94 kB
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SAR ADC & Driver Quick-Match Guide9/13/2013PDF251 kB
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Low Power Precision Data Acquisition Signal Chain for Space Constrained Applications8/1/2015PDF1 M
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Low Power Precision Data Acquisition Signal Chain For Space Constrained Applications8/1/2015
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Designing Power Supplies for High Speed ADC2/1/2012
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MS-2124: Understanding AC Behaviors of High Speed ADCs2/1/2011PDF276 K
Tools & Simulations
IBIS Models
IBS
AD7916 IBIS Model
145.18 K
Product Recommendations
AD7916 Companion Parts
Recommended Digital Isolators
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For SPI Interface, enhanced system-level ESD performance, 2.5kVrms isolation:
ADUM3401. -
For SPI Interface, lowest power, 2.5kVrms isolation:
ADUM1401. - For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V): ADUM3481.
- For SPI Interface, low power, 5.0 kVrms isolation: ADUM4401.
Recommended External Voltage References
Recommended Driver Amplifiers
- For low frequency, precision, low bias current applications: ADA4627-1, ADA4637-1, AD8610.
- For precision, low power, low distortion applications: ADA4805-1, ADA4805-2, ADA4841-1, ADA4841-2, ADA4940-1, ADA4941-1.
- For high frequency, low noise, low distortion applications: ADA4805-1, ADA4897-2, AD8021.
Recommended Power Solutions
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.
