Ultra-Low Noise Bias Voltage Reference Design for Microbolometer Detectors in Thermal Cameras
Description
Uncooled microbolometer detectors require accurate and ultra-low noise bias voltages for their operation. Such requirements cannot be simply met by switching power supplies: LDO or DAC outputs. Enabled by Texas Instruments’ precision DAC: low noise precision amplifier and high PSRR: low noise LDO: this reference design demonstrates how to generate accurate and ultra-low noise programmable bias voltages and power supplies for uncooled microbolometer detectors at low cost.
Features
- Total output noise < 4µVRMS from 0.1Hz to 1MHz
- Voltage accuracy better than ±10mV
- Based on a true 16-bit, R-2R DAC with buffered rail-to-rail voltage output
- No. of output: four programmable voltage outputs
- Easily scalable in terms of DAC resolution, voltage range, number of channels
- Output current capability: 10mA (without BJT) and 75mA (with external BJT)
Applications
- Instrumentation (Lab, Analytical, Field)
- AC/DC Power Meter and Analyzers
- AC Sources, DC Power Supplies & Electronic Loads
- Memory and Semiconductor Test Equipment
- Thermal Imaging Camera
Product Categories
- Data Converters
| Download the bill of materials for TIDA-01583 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-01583| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| Ultra-Low-Noise, Program Bias, and PS Reference Design for Thermal Image Sensor | 26 Feb 2018 | 3786 | ||
| TIDA-01583 Gerber | 26 Feb 2018 | ZIP | 304 | |
| TIDA-01583 CAD Files | 26 Feb 2018 | ZIP | 723 | |
| TIDA-01583 PCB | 26 Feb 2018 | 863 | ||
| TIDA-01583 Assembly Drawing | 26 Feb 2018 | 227 | ||
| TIDA-01583 BOM | 26 Feb 2018 | 57 | ||
| TIDA-01583 Schematic and Block Diagram | 26 Feb 2018 | 344 |