What is noise/Intro to noise
Electric noise is a disturbance in an electric that causes changes in voltage or current, typically causing a small increase in the measured voltage or current. These are typically random and can be difficult to predict.
Types of Noise
Thermal Noise - Noise directly associated with the flow of electrons. Affected by temperature and resistance. Additionally, the range of frequencies will also have an effect of the amount of thermal noise
Flicker Noise - This is still a researched topic but it is also related to the frequencies of the components in the circuit
Shot Noise - Random motion caused by electron movement (unavoidable)
Known ways to reduce noise
Use shielded cables
Try to shield small components
Ground signal wiring to a common point
Useful Links
Ways to Test/Test Plan
Similar to Testing Noise on Steering Interface Board ?
Noise of Parts in MSXIV
Component | Noise |
SPV1020 DC-DC MPPT Boost (Nomura MPPT) | ? |
IC OP AMP DUAL GP RR 10MHZ 8-VSSOP | 12nV/sqrt(Hz) per 1kHz |
NGM SC-M150s (motors) | ? |
Tritium WaveSculptor 20 | ? |
DCM3623TA5N17B4T70 | ? |
DC DC CONVERTER 15V 240W | For models ≤12 V/ For 15 V & 24 V mode ls,20 MHz |
IC SENSOR IMU LGA-14L | 7mdps/Hz, 140 mdps |
IC OP AMP GEN PURPOSE RR 10MHZ SOT-23-5 | 10 mhz (double check) |
IC REG LDO 3V 0.2A 4-TDFN | Voltage Noise (130micro Votls) |
IC OP AMP DUAL GP RR 10MHZ 8-VSSOP | 10mhz operating, 12nV/sqrt(Hz) per 1kHz |
12 Bit Analog to Digital Converter 4 Input 1 Sigma-Delta 10-VSSOP | 12 bit noise free?? (check) |
MC34063ACD-TR
| ? |
LTC4010CFE#PBF | Small amounts of voltage noise (not specified….) |
IC OP AMP GEN PURPOSE RR 10MHZ SOT-23-5 | Operating 10mhz, noise 12nV/sqrt(Hz) per 1kHz |
IC DGTL ISO 2.5KV 2CH I2C 8SOIC ISO1540DR | Operating 1mhz, noise ?? |
Parts to check/investigate:
Motors and Motor Controllers
Lights board and buck converter
driver control boards, lights
other parts as well