SBAA591
December 2023
REF54
1
Abstract
Trademarks
1
Introduction
2
Flicker Noise Measurement Method
3
0.1 Hz to 10 Hz Band Pass Filter Design for Reference Noise Measurement
3.1
Filter Schematic
3.2
TINA - TI simulations
3.3
Component Selection
4
Measurement Setup
4.1
REF54250CDR Noise Measurement Setup
5
Filter Board Design
5.1
Schematic
5.1.1
Schematics Images
5.2
Layout
5.3
Bill of Materials
6
References
6
References
Texas Instruments,
TI Precision Designs: Verified Design 0.1Hz to 10Hz Noise Filter
verified design.
Vishay Precision Group,
Ultra High Precision, Z-Foil Audio Resistor Minimizes Noise and Distortion in the Signal Path with TCR of ± 0.05 ppm/°C, Tolerance to ± 0.005 % and High Linearity or Low Voltage Coefficient of Resistance (VCR) of 0.1 ppm/V
document.
Texas Instruments,
TPS7A33 –36-V, 1-A, Ultralow-Noise Negative Voltage Regulator
data sheet.
Texas Instruments,
TPS7A4701RGWR
product.
Texas Instruments,
OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers