Overview
Features and Benefits
- High performance
- Pseudo differential analog input range 0 V to VREF with VREF from 2.5 V to 5.0 V
- Throughput: 500 kSPS/100 kSPS options Zero latency architecture
- 16-bit resolution with no missing codes
- INL: ±0.6 LSB typical, ±1.25 LSB maximum
- Dynamic range: 92 dB, VREF = 5 V
- SNR: 91.5 dB at fIN = 10 kHz, VREF = 5 V
- THD: −114 dB at fIN = 10 kHz, VREF = 5 V
- SINAD: 91 dB at fIN = 10 kHz, VREF = 5 V
- Low power dissipation
- Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
- AD7988-1: 400 μW at 100 kSPS (VDD only)
- 700 μW at 100 kSPS (total)
- AD7988-5: 2 mW at 500 kSPS (VDD only)
- 3.5 mW at 500 kSPS (total)
- 70 μW at 10 kSPS (total)
- Proprietary SPI-/QSPI™-/MICROWIRE™-/DSP-compatible serial interface
- 10-lead MSOP, 10-lead 3 mm × 3 mm LFCSP
- Wide operating temperature range: −40°C to +125°C
Product Details
The AD7988-1/AD7988-5 are 16-bit, successive approximation, analog-to-digital converters (ADC) that operate from a single power supply, VDD. The AD7988-1 offers a 100 kSPS throughput, and the AD7988-5 offers a 500 kSPS throughput. They are low power, 16-bit sampling ADCs with a versatile serial interface port. On the CNV rising edge, they sample an analog input, IN+, between 0 V to VREF 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 SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus using the SDI input. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply, VIO.
The AD7988-1/AD7988-5 generics are housed 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
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 (2)
Documentation & Resources
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The Data Conversion Handbook, 20051/2/2005
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SAR ADC & Driver Quick-Match Guide9/13/2013
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CN0395: Volatile Organic Compound Detector for Indoor Air Quality Measurement (Rev. 0)8/16/2017
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CN-0255: A Complete Single-Supply, 16-Bit, 100 kSPS PulSAR ADC System Dissipates 8 mW12/30/2013
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CN-0306: A 16-Bit, 100 kSPS Low Power Successive Approximation ADC System with Optimum Low Power Drive Amplifier for Sub-Nyquist Input Signals Up to 1 kHz12/29/2013
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Micro-Power Wireless Current Sense7/7/2023
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Wireless Current Sense Circuit Floats with Sense Resistor8/1/2017 Analog Dialogue
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Protecting ADC Inputs4/1/2017
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Voltage Reference Design for Precision Successive-Approximation ADCs6/1/2013 Analog Dialogue
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Designing Power Supplies for High Speed ADC2/1/2012
Software & Systems Requirements
Tools & Simulations
Reference Designs (3)
Product Recommendations
AD7988-1 Companion Parts
Recommended Digital Isolators
- For SPI Interface, lowest power, 2.5 kVrms 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.
- For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation: ADUM3401.
Recommended Driver Amplifiers
- For precision, low power, low distortion applications: ADA4805-1, ADA4805-2, ADA4841-1, ADA4841-2.
- For low frequency, precision, low bias current applications: ADA4627-1, ADA4637-1, AD8610.
- For high frequency, low noise, low distortion applications: ADA4807-1, ADA4807-2, ADA4897-1, ADA4897-2.
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.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD7988-1BCPZ-RL7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| AD7988-1BRMZ | Material Declaration | Reliability Data | 10-Lead MSOP | |
| AD7988-1BRMZ-RL7 | Material Declaration | Reliability Data | 10-Lead MSOP | |
| Wafer Fabrication Data |
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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.