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TIPD151
16-bit 400KSPS 4-Ch. Multiplexed Data Acquisition Ref Design for High Voltage Inputs, Low Distortion
TIPD151
Overview
This TI Verified Design implements a 16-bit, differential 4-channel multiplexed data acquisition system at 400KSPS throughput for high voltage differential input of ±20 V (40 Vpk-pk) industrial applications. The circuit is realized with a 16-bit successive-approximation-resistor (SAR) analog-to-digital converter (ADC), a precision high voltage signal conditioning front end, and a 4-channel differential multiplexer (MUX). The design details the process for optimizing the precision high voltage front end drive circuit using the OPA192 and OPA140 to achieve excellent dynamic performance with the ADS8864.
Features
- 4-Channel, High-Voltage (±20 V), Multiplexed, Data Acquisition System
- 400 KSPS (100KSPS/Channel) Sampling Rate
- ±1LSB INL
- 16 Bit, Full Scale, Channel-to-Channel Settling
- 14.2 Bits ENOB
Industrial
- Battery cell formation & test equipment
- Channel isolated analog input module
- Mixed module (AI,AO,DI,DO)
- Off-highway vehicles control systems
- Parametric measurement unit (PMU)
- Portable field instrumentation
- Vector signal transceiver (VST)
- Voltage & current input module
- Weigh scale
- Weight module
- Wide input range
- Wireless communications test
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDR348A.PDF (154 K)
Detailed schematic diagram for design layout and components
TIDC201.ZIP (584 K)
Detailed schematic diagram for design layout and components
TIDR349B.PDF (120 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDC243.ZIP (476 K)
Design file that contains information on physical board layer of design PCB
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | 16-Bit 400-kSPS Four-Channel MUX Data Acquisition System Reference Guide (Rev. B) | Mar. 29, 2016 |
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