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16-Channel DAS with 16-Bit, Bipolar Input, Dual Simultaneous Sampling ADC
Overview
Features and Benefits
- 16-channel, dual, simultaneously sampled inputs
- Independently selectable channel input ranges
- True bipolar: ±10 V, ±5 V, ±2.5 V
- Single 5 V analog supply and 2.3 V to 3.6 V VDRIVE supply
- Fully integrated data acquisition solution
- Analog input clamp protection
- Input buffer with 1 MΩ analog input impedance
- First-order antialiasing analog filter
- On-chip accurate reference and reference buffer
- Dual 16-bit successive approximation register (SAR) ADC
- Throughput rate: 2 × 1 MSPS
- Oversampling capability with digital filter
- Flexible sequencer with burst mode
- Flexible parallel/serial interface
- SPI/QSPI/MICROWIRE/DSP compatible
- Optional cyclic redundancy check (CRC) error checking
- Hardware/software configuration
- Performance
- 92 dB SNR at 500 kSPS (2× oversampling)
- 90.5 dB SNR at 1 MSPS
- −103 dB THD
- ±1 LSB INL (typical), ±0.99 LSB DNL (maximum)
- 8 kV ESD rating on analog input channels
- On-chip self detect function
- 80-lead LQFP package
Product Details
The AD7616 is a 16-bit, DAS that supports dual simultaneous sampling of 16 channels. The AD7616 operates from a single 5 V supply and can accommodate ±10 V, ±5 V, and ±2.5 V true bipolar input signals while sampling at throughput rates up to 1 MSPS per channel pair with 90.5 dB SNR. Higher SNR performance can be achieved with the on-chip oversampling mode (92 dB for an oversampling ratio (OSR) of 2).
The input clamp protection circuitry can tolerate voltages up to ±21 V. The AD7616 has 1 MÙ analog input impedance, regardless of sampling frequency. The single-supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies.
The device contains analog input clamp protection, a dual, 16-bit charge redistribution SAR analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.
The AD7616 is serial peripheral interface (SPI)/QSPI™/DSP/ MICROWIRE compatible
Applications
- Power line monitoring
- Protective relays
- Multiphase motor control
- Instrumentation and control systems
- Data acquisition systems (DASs)
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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 (1)
Documentation
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Software & Systems Requirements
Device Drivers
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IBIS Models
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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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Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
