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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
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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 (2)
Documentation
Tested Product Combinations (1)
Technical Books (1)
Software & Systems Requirements
Tools & Simulations
Reference Designs (1)
Product Recommendations
AD7988-5 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.
Reference Materials
Product Selection Guide (1)
Wireless Current Sense Combines Parts from ADI and LTC
Press Releases (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.
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