Dual Polarity High-Voltage Differential Input Interface for Low-Voltage Comparators Reference Design


Design files


This TI Verified Design provides the theory, component selection, simulation, schematic, PCB layout, BOM, and measured performance for a dual polarity (bipolar), high-voltage differential input interface for low-voltage comparators.  The design allows a comparator such as the TLV3201 to operate with a single +3.3 V supply and to compare two input voltages that not only exceed its normal input range, but can be of either (±) polarity. The design takes into account all the comparator and passive component errors and results in <10 mV, of dc input error. Worst-case analyses techniques are provided to determine the dc error contributed by limited resistor tolerance, for the resistors used in the comparator input networks.


• TI Precision Designs: Verified Design includes Theory, Component Selection, TINA-TI Simulation, PCB Schematic & Layout, Bill of Materials, and Measured Performance
• DC error due to comparator and passive components less than +/-10 mV
• Input range +/-15 V, bipolar
• Single-Supply Solution
• Features TLV3201 comparator
• Design can also be used with TLV3011, TLV3012, TLV3401 and TLV3701 comparators to achieve alternate design goals

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDC810.ZIP (536 K)

Detailed schematic diagram for design layout and components

TIDRC45.PDF (133 K)

Detailed schematic diagram for design layout and components

TIDRC46.PDF (27 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC811.ZIP (379 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.


TLV32015.5-V, high-speed, single push-pull comparator

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development


Support software

TIPD130 Simulation — TIDC812.ZIP (54 K)

Technical documentation

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Type Title Date
* User guide Dual-Polarity High-Voltage Differential Input I/F for Low-Voltage Comparators Dec. 10, 2014

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