NewAI data center and optics
A 625 MHz clock at 15.73 fs, lab-grade from its own supply
15.73 fsRMS jitter at 625 MHz, 12 kHz to 20 MHz
Harmony PI Filter TSNJ-5A6L26
DC power at the intrinsic noise floor.
One passive 2.2 × 2.6 mm part and two 47 µF capacitors take switching noise, spurs and jitter off a DC rail, from DC to 6 GHz, and up to 20 GHz in a dual configuration.
- Ripple before
- 10 mVp-p
- Ripple after
- 4.48 µVp-p
- Reduction
- 2,232×
- Measured on
- ADI LT8622S Silent Switcher at 1 V, 2 A, with Harmony Type-B. See the poster
Designed into AI infrastructure, from the fiber network to the AI server.
- Up to 1,000 km
Fiber network monitoring
The world’s largest optical cable maker, in Italy
- Up to 2 km
Optical modules
A leading laser-source provider for optical transceivers
- Up to 50 m
Rack and multi-rack
A Tier-1 interconnect and physical-layer incumbent
- Up to 1 m
AI servers
On the server board, beside Tier-1 mixed-signal chiplets
On production boards built by the world’s top electronics manufacturers
- Foxconn
- USI
- Canon Electronics
- Celestica
- Pegatron
Beyond AI infrastructure, Harmony is also designed into
One part. One circuit. Every rail.
Harmony and two 47 µF capacitors at VOUT make the Type-B configuration. It replaces the ferrite bead and the capacitor bank. It can even replace LDO post-regulation, when a switcher’s intrinsic noise floor (typically 6 to 70 µVp-p) is already low enough for the application. It is the same Type-B configuration on every rail, and you don’t need any small-value capacitors. Need more current drive? Add more bulk capacitors to deliver the energy at high speed.
15 → 3parts, against TI’s 6 GHz filter
93%less filter area: 112 to 7.7 mm²
20 GHzwith two Type-B stages in series
Measured on the bench.
Every curve is plotted from real instrument marker readings in our datasheet and lab reports. The caption under each chart names the instrument, the setup and the source document.
Insertion loss (S21), 30 kHz to 20 GHz
- Harmony alone (native)
- Type-B: Harmony + two 47 µF
- Dual Type-B, two EVBs in series
Lines join the instrument marker readings on a log axis. Between 2 MHz and 500 MHz the Type-B trace sits on the network analyzer’s own noise floor, so the true attenuation there is deeper than the plot can show, below the noise floor of most instruments: about −120 dB with a single Type-B, and −140 to −160 dB with dual Type-B. Conventional capacitor networks reach 80 to 90 dB at best.
Source: Datasheet TSNJ-DS-R009; Noise Free Innovations 26V2, p. 6
The same suppression on any source and load
This attenuation profile holds, or gets better, whatever the source and load impedance. Many power filters reach their rated attenuation only in a matched 50 Ω test, and fall short on a real power rail.
Not capped by the dB on this chart
Harmony removes supply noise until only the true intrinsic noise floor of the power source or system is left. On ADI’s LT8622S Silent Switcher, it revealed a noise floor 20 dB lower than the ADI datasheet shows.
Shunt impedance of a real PDN, before and after Harmony
- Before: capacitor network
- After: Harmony Type-B
Marker readings from a VNA shunt-through measurement, 100 kHz to 3 GHz. The 1.13 Ω resonance at 127.8 MHz falls to 153 µΩ, about 7,400 times lower.
Source: Noise Free Innovations 26V2, p. 11 (PDN case study)
Differential XO phase noise with 200 mVp-p injected on the supply
- XO only
- XO with Harmony
Power-supply phase-noise test with a 200 mVp-p signal injected on the XO supply. Harmony improves the phase noise by 18 to 30 dB from 20 kHz to 2 MHz.
Source: Noise Free Innovations 26V2, p. 9 (PSPN test table)
122.88 MHz VCXO RMS jitter, 12 kHz to 20 MHz
Measured on a Keysight E5052B signal source analyzer. The optimized Type-B result of 20 fs is from the Harmony Quick Start Guide. The demo board in the original document was not yet optimized.
Source: TransSiP Noise Free ULPN 122.88 MHz VCXO 25V1; Harmony Quick Start Guide 25V3, §9
Results from the lab and the field.
From a 15 fs clock for AI optics to a bracelet that runs on body heat. Each result comes with its setup.
NewUltra-low-noise LDOs
ADI’s LT3046, made battery-like and noise-free
−130 dBmnoise floor at 3.3 V, with every spur removed
AI data center and optics
A flat switching rail inside a high-speed laser source
0.95 V, 4 Awith no visible ripple
Wireless and 5G
Lab-grade 5G clock jitter from a noisy 3.3 V rail
A 122.88 MHz VCXO powered from a noisy 3.3 V PDN, the way it runs in real 5G equipment.
233 → 20 fsRMS jitter, 12 kHz to 20 MHz
Defense radio
An ADM7150’s baseband noise, reduced to power-off levels
An operational test by a defense entity on an ultra-low-noise, high-PSRR LDO inside a radio system.
20 dBless 1/f noise
Order direct, from one piece to full reels.
Buy cut strip from one piece or full reels of 3,000 straight from TransSiP. Volume quotes come back with price and lead time.
- TSNJ-5A6L26Harmony PI Filter, 5 A$4.22each, 1 pc$2.12at 3,000+
- Harmony EVB Type-BHarmony Type-B evaluation board$85.00per board3in stock
In stock and shipped direct from TransSiP. Also at DigiKey (US website): 5,332 in stock as of Oct 24, 2026.
Anything that listens, times or converts.
AI data center, optics and compute
Supply noise turns into jitter on every clock and data edge. Quiet rails mean timing margin for TIAs, laser drivers, SerDes, DDR and HBM.
How Harmony helpsWireless, 5G and RF front ends
Supply noise becomes phase noise and spurs. Filter the oscillator and front-end rails, and a commodity supply behaves like a lab bias.
How Harmony helpsGNSS and positioning
Satellite signals arrive below the noise floor. Clean supplies cut worst-case error tenfold and keep tracks on the trail.
How Harmony helpsPrecision analog and ultra-low-noise LDOs
A further 10 to 20 dB below an LDO’s own noise floor, including its 1/f region, goes straight into SNR for ADCs, DACs, audio and sensors.
How Harmony helpsPower conversion and PDN design
Keep the switcher’s efficiency and drop the LDO post-regulator. Switcher ripple falls from millivolts to microvolts.
How Harmony helpsBiomedical and optical sensing
A wrist-worn heart-rate monitor with one LED and one detector matched a chest strap once its bias was clean.
How Harmony helpsSpace, defense and quantum
Mission-critical radios, satellites and cryogenic electronics need clean rails and very few parts.
How Harmony helpsVerified outside TransSiP.
Nokia Bell Labs
Took two ADI LT3046 LDOs to a −130 dBm floor with Harmony, and measured the TPS7A94 + Harmony noise floor with TransSiP. Dr. Shahriar Shahramian demonstrated Harmony at IMS 2025.
Rohde & Schwarz and MACOM
Experts verified the dual Type-B noise suppression from 100 kHz to 20 GHz on an R&S ZNB.
Keysight and Analog Devices
Collaborated on the noise-free LT8622S Silent Switcher measurements.
NYU WIRELESS
Published a 12.5 dB supply-noise reduction for a BLE receiver at IEEE WiSNeT 2025.
u-blox
“TransSiP PI enhances the capability of GNSS.” Partner on the PowerWatch 2 no-charge GNSS smartwatch.
Tektronix
Published the case study “TransSiP Breakthrough Insight into Power Conversion Switching Noise.”
Rakon have tested TransSiP’s noise reductions technology with our ultra-low noise oscillators and the results are truly impressive.
See it on the bench.
IMS 2025: Harmony noise-free filter demo by Dr. Shahriar Shahramian
Dr. Shahriar Shahramian, Director of the ASICs & Packaging Research Lab at Nokia Bell Labs and founder of The Signal Path, demonstrates the TSNJ-5A6L26.
LT8622S switching noise, part 2: the Silent Switcher becomes noise-free
Silent Switcher EMI, part 2: one filter at the point of load
From the blog.
Harmony for memory: clean power for PCIe Gen5/6 SSDs and DDR5/6
Merged IO rails, up to 16 ONFI channels and shrinking voltage margins make power integrity a speed limit for SSDs and DDR. Where the noise comes from, and what a 5.7 mm² filter changes.
Harmony for 2.4T and 3.2T copper and optical pluggables
2.4T and 3.2T pluggables run 300G and 400G per lane, leaving less timing margin for supply noise than ever. Where Harmony goes in ACC, AEC, AOC, OSFP, ELSFP, LPO and NPO.
Harmony with ultra-low-noise LDOs: LT3046, TPS7A94, LT3045 and ADM7150
The best LDOs still have a 1/f region, a PSRR that rolls off, and a real-world noise floor above their datasheet. The newest result, from Nokia Bell Labs, takes two ADI LT3046s to a −130 dBm floor.