Texas Instruments ADS7863 12-bit ADC
The Texas Instruments ADS7863 Analog-to-Digital Converter (ADC) has two independent 12-bit ADCs in one package allowing for throughput and simultaneous sampling. The TI ADS7863 dual, 12-bit, 2MSPS ADC has four fully differential or six pseudo-differential input channels grouped into two pairs for high-speed, simultaneous signal acquisition. This architecture provides excellent common-mode rejection of 72dB at 100kHz, which is a critical performance characteristic in noisy environments.
Features
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Four Fully- or Six Pseudo-Differential Inputs
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SNR: 71dB, THD: -81dB
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Programmable and Buffered Internal 2.5V Reference
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Flexible Power-Down Features
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Variable Power-Supply Ranges: 2.7V to 5.5V
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Low-Power Operation: 45mW at 5V
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Operating Temperature Range: -40°C to +125°C
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Pin-Compatible with ADS7861 and ADS8361 (SSOP package)
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Applications
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Motor Control
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Multi-Axis Positioning Systems
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Three-Phase Power Control
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ADS7863 Functional Diagram
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ADS7863EVM Evaluation Module
The TI ADS7863EVM Evaluation Module uses a circuit board that will evaluate the TI ADS7861, ADS8361, and ADS7863 12-bit and 16-bit analog to digital converters. The ADS7861 operates from 5 volts for AVDD
and DVDD
while the ADS8361 operates from 2.7V to 3.6V for AVDD
and DVDD
. The ADS7863 operates from 2.7V to 5.5V for AVDD
and DVDD
. The TI ADS7863EVM evaluation board has a 500kSPS, 12-bit/16-bit serial output. The analog inputs can be configured single-ended or differential. The eval module includes a built-in reference and a high-speed serial interface.
ADS7863EVM Features
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Full-featured EVM board for the ADS7863 12-bit analog to digital converter
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Onboard signal-conditioning option for CHB1
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Access to SDOA and SDOB as well as Mode pins M0 and M1
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Modular design for use with a variety of DSP and micro-controller interface boards
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