HardLabs

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board

abdurrahman-eee·Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board layout, top view — open source board by abdurrahman-eee

About the Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board is an open source PCB design by abdurrahman-eee, published on GitHub. It is a 2-layer board measuring 60 × 40 mm, with 18 components from 11 distinct parts.

Other key parts include the TLV9061xDBV. By type, the board carries 7 resistors, 5 capacitors, 2 diodes and 1 IC.

It belongs with the sensors and power & battery designs in this gallery.

From the project

The Bipolar ±5 V to 0-3.3 V Sensor Interface Board is a general-purpose analog front-end designed to safely connect bipolar ±5 V sensor outputs to 3.3 V microcontroller ADC inputs. Many industrial and laboratory sensors produce bipolar signals, while modern microcontrollers can only measure unipolar, low-voltage signals.

A professional-grade analog signal conditioning circuit designed to interface bipolar ±5V analog signals with precision microcontroller ADC inputs (0-3.3V). This project provides a complete hardware solution including schematic design, PCB layout, and simulation verification using low-power operational amplifiers.

Key Specifications: - Input Signal: ±5V bipolar (10VPP peak-to-peak) - Output Range: 0-3.3V unipolar (3-bit equivalent @ 410mV/step) - Topology: Non-inverting scaling amplifier with DC offset - Op-Amp: Texas Instruments TLV9061/TLV9062 (Low Power, Rail-to-Rail) - Supply Voltage…

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board, from the project README
From the project README

Main components on the Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board

TLV9061xDBV

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board bill of materials (BOM)

18 components, 11 distinct parts.

QtyPartRefs
1
TLV9061xDBV
U1
1
3.3
3V3
1
Screw_Terminal_01x02
ADC1
1
5
AEC±5V1
2
BAT54J
D1, D2
2
0.1uf
C1, C4
2
1uf
C2, C5
1
1nf
C3
2
33k
R1, R3
4
10k
R2, R5, R6, R8
1
100
R7

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board design files

The KiCad project lives in the abdurrahman-eee/Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board repository on GitHub; these links point at the commit this page was built from.

Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board: common questions

How big is the Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board?

The Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board measures 60 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board?

18 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board design files?

From the abdurrahman-eee/Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Bipolar--5-V-to-0-3.3-V-Sensor-Interface-Board design in my own project?

The repository has no license, so all rights stay with abdurrahman-eee. Use it as a reference, and ask the author before reusing the design.

Similar boards