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AD7981: High Temperature, 16-Bit, 600 kSPS PulSAR ADC Data Sheet (Rev. C)9/25/2015PDF2 M
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AD7981-KGD: Known Good Die Data Sheet (Rev. A)9/25/2015PDF246 K
Overview
Features and Benefits
- Download AD7981-KGD Data Sheet. Available as Known Good Die and fully guaranteed to data sheet specifications.
- Extreme high temperature operation
- Specified temperature range
- −55°C to +210°C (10-lead FLATPACK)
- −55°C to +175°C (10-Lead MSOP)
- Specified temperature range
- High performance
- Pseudo differential analog input range
- 0 V to VREF with VREF between 2.4 V and 5.1 V
- Throughput: 600 kSPS
- Zero latency architecture
- 16-bit resolution with no missing codes
- INL: ±2.5 LSB maximum, DNL: ±0.9 LSB maximum
- Dynamic range: 92 dB, VREF = 5 V
- SNR: 91 dB at fIN = 1 kHz, VREF = 5 V
- THD: −102 dB at fIN = 1 kHz, VREF = 5 V
- SINAD: 90.5 dB at fIN = 1 kHz, VREF = 5 V
- Pseudo differential analog input range
- Low power dissipation
- Single-supply 2.5 V operation with 1.8 V to 5 V logic interface
- 2.25 mW typical at 600 kSPS (VDD only)
- 4.65 mW typical at 600 kSPS (total)
- 75 μW typical at 10 kSPS
- Proprietary serial interface
- SPI-/QSPI-/MICROWIRE-/DSP-compatible
- Daisy-chain multiple ADCs and busy indicator
- Small footprint
- 10-lead, 3 mm × 3 mm, monometallic wire bonding MSOP
- 110-lead, 0.255 inches × 0.255 inches, monometallic wire bonding FLATPACK
Product Details
The AD7981 is a 16-bit, successive approximation, PulSAR® analog-to-digital converter (ADC) designed for high temperature operation. The AD7981 is capable of sample rates of up to 600 kSPS while maintaining low power consumption from a single power supply, VDD. It is a fast throughput, high accuracy, high temperature, successive approximation register (SAR) ADC, packaged in a small form factor with a versatile serial port interface (SPI).
On the CNV rising edge, the AD7981 samples an analog input, IN+, between 0 V and REF with respect to a ground sense, IN−. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The device power scales linearly with throughput.
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply, VIO.
For space constrained applications, the AD7981 is available in a 10-lead mini small outline package (MSOP) with operation speci-fied from −55°C to +175°C and 10-lead ceramic flat package (FLATPACK) with operation specified from −55°C to +210°C. These packages are designed for robustness at extreme temperatures, including monometallic wire bonding, and are qualified for up to 1000 hours of operation at the maximum temperature rating.
The AD7981 is a member of a growing series of high temperature qualified products offered by Analog Devices, Inc. For a complete selection of available high temperature products, see the high temperature product list and qualification data available at www.analog.com/hightemp.
Applications
- Oil and gas exploration
- Avionics
- Heavy industrial
- High temperature environments
- Scientific instrumentation
Product Categories
Markets and Technologies
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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A Robust Precision Data Acquisition and Control Platform for Extreme High Temperature Environments3/2/2018 Analog Dialogue
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Protecting ADC Inputs4/1/2017
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A Low Power Data Acquisition Solution for High Temperature Electronics Applications8/1/2015 Analog Dialogue
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Harsh Environments Conquered—Low Power, Precision, High Temperature Components for Extreme High Temperature Applications10/1/2014
Reference Designs (1)
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
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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.