Iridium® PNT ASIC

Redefining Resilience: Coming 2026

Introducing the Iridium PNT ASIC: A groundbreaking, ultra-small chip designed to provide alternative positioning, navigation, and timing (PNT) capabilities anywhere on Earth.

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Small enough to fit anywhere GPS is used, our miniature PNT chip shields critical timing and positioning from jamming, spoofing, meaconing, and time interruptions.

U.S. quarter, 20 euro cent coin, and Iridium PNT ASIC chip side by side for size comparison.

The Iridium PNT ASIC Offers Developers:

Simplified Integration

Small form factor, 8x8mm ASIC designed with standard pinouts to accelerate development

Familiar interfaces that resemble standard GPS/GNSS hardware for quick adoption

Built-in RF and power regulators that cut complexity

Secure, on-chip firmware storage that streamlines deployment

Versatility

Flexible configurations—create a standalone Iridium PNT receiver or hybrid Iridium + GNSS solution

Two independently configurable PPS outputs that support a range of end products

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Iridium® PNT ASIC Technical Specifications

PNT Service Timing Specifications¹
	Clock Stratum Level	Stratum 0 source
		Supports Stratum 1 PTP Grandmaster Clock / Primary Reference Source (PRS)
	Timing Stability (Meets ITU-T G.8272 PRTC-A performance specifications)	Less than 50 nanoseconds, 1-sigma with OCXO oscillator
		Less than 25 nanoseconds, 1-sigma with rubidium oscillator
	Timing Accuracy	Verified average time offset within 5 nanoseconds of UTC(NIST) over 60 days (source: U.S. NIST)
	UTC Traceability	Traceable to UTC(USNO), UTC(NIST), and UTC(IT); continuously monitored via multiple independent geographically distributed tracking stations
PNT Service Position Specifications¹
	Static-Location Accuracy (Stand-Alone Without GNSS)	Horizontal²: 10 meters, 1-sigma
		Vertical²: 10 meters, 1-sigma
Mechanical
	Dimensions	68 QFN 8 mm × 8 mm × 0.85 mm (LxWxH)
Electrical Data
		Core Power Option
		Internal³	External⁴
	Supply voltage (VMAIN)	3.135 V - 3.465 V (3.3 V Typ)
	Digital I/O voltage (VDD_IO)	1.71 V - 1.89 V (1.8 V Typ)
	Core voltage (VDD_P8V)	N/A	0.776 V - 0.824 V (3% Tolerance)
Power Consumption	VMAIN	320 mA	120 mA
	VDD_IO	10 mA
	VDD_P8V	N/A	625 mA
	Total Power	1.07 W	0.91 W
Interfaces
Peripheral	SPI	1
	I2C	up to 3
	UART	up to 3
	GPIO⁵	up to 17
Communication	Custom NMEA sentences used for communication and configuration
Digital I/O	2 configurable 1PPS inputs
	2 configurable 1PPS outputs⁶
	Configurable clock port, locked to either a reference clock input or 1PPS output
Reference Clock Input	Reference clock (TCXO, OCXO, Rb) input frequency: 40, 26, or 10 MHz (Sine, 50 Ω)
RF
Antenna	Antenna type	Iridium capable
	Frequency range	1616-1626.5 MHz
	RF input impedance	50Ω
Connectivity
	Network Type	Low-Earth Orbit (LEO), L-band
	Satellite Service	Iridium PNT
Environmental
	Operating temperature	-20°C to 70°C
	Storage temperature	-55°C to 150°C
	Junction temperature	-40°C to 150°C
	Soldering temperature (max)	260°C

¹Internally tested specification. Information should be considered “as-is” and Iridium assumes no liability for its use. No warranty, either express or implied, is given, including but not limited to, with respect to accuracy, correctness, reliability, and qualifications in determining performance.

²Static position, outdoor antenna.

³Internal core power option utilizing on-chip DC/DC converter, supports 1 detector.

⁴Utilizing 0.8 V external core power supply option, bypassing on-chip DC/DC converter.

⁵Multiplexed interface pins limit availability.

⁶Automatically tracks the highest priority source satisfying configured performance thresholds, either PNT signal source or external 1PPS input, e.g. from GPS/GNSS.

Iridium PNT: Accurate, Secure, and Available Now

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Powered by the first truly global low-Earth orbit (LEO) satellite constellation, Iridium PNT:

Possesses a signal 1,000 times (30 dB) stronger than GPS/GNSS
Operates indoors, in urban canyons, and multi-path environments
Utilizes complex, overlapping beam patterns and signal authentication techniques

Learn More About Iridium PNT

Explore Iridium PNT

Learn more about the only global alternative to GPS/GNSS available today.

Develop with Us

Collaborate with Iridium to integrate the Iridium PNT ASIC into the next generation of resilient, reliable, and secure PNT solutions.

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