16 bit 1MSPS Data Acquisition Reference Design for Single-Ended Multiplexed Applications
TIPD173
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Key Document
-
TIPD173 Design File
(ZIP 912 KB)
02 Oct 2014
- 16-Bit 1-MSPS Data Acquisition Ref Design for Single-Ended Multiplexed Apps (Rev. A)
(PDF 1861 KB)
20 Apr 2017
Description
This TI Precision Verified Design details a systematic design methodology for a 16 bit, 1MSPS, single-ended data acquisition (DAQ) block optimized to achieve excellent settling time, power consumption, static performance and dynamic performance for multiplexed applications. The design features a 16-bit, high-precision, successive-approximation-register (SAR) analog-digital converter (ADC); low noise, low power and wide bandwidth ADC input drive circuitry; and, a very low drift ADC voltage reference and corresponding reference input drive circuitry.
This design is well suited to applications which require low-latency, multi-channel, data acqusition for multi-sensor measurements such as environmental (temperature, pressure, etc..), biopotential and power measurement.
Features
- Contains Theory, Component Selection, Simulation, Schematic, PCB Layout, and Measured Performance Results
- Optimized for 900ns (max) 16-bit step-input transient settling time
- Power: 21.5mW @ AVDD = 3.3V
- Measured ENOB of 14.58 bits
- Utilizes ADS8860 (16bit, 1Msps SAR ADC), OPA320 (Input Driver), THS4281 + OPA333 + REF5040 (Reference Driver)
See the Important Notice and Disclaimer covering reference designs and other TI resources.