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STMicroelectronics TESEO-LIV4FM
- Part No.:
- TESEO-LIV4FM
- Manufacturer:
- STMicroelectronics
- Category:
- RF Receivers
- Package:
- 18-SMD Module
- Datasheet:
-
TESEO-LIV4FM.pdf
- Description:
- 18 LGA 9.7X10.1X2.55MM PITCH 1.1
- Quantity:
- Payment:
- Shipping:
Inventory:1,719
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Product details
Overview
TESEO-LIV4FM from STMicroelectronics is a standalone dual-band GNSS module integrating the Teseo IV single-die receiver IC, supporting simultaneous GPS/Galileo/GLONASS/BeiDou/QZSS and IRNSS-ready operation. It delivers submeter horizontal accuracy (CEP 50%, 24h static), -162 dBm L1/L5 tracking sensitivity with external LNA, 10 Hz max fix rate, and operates from -40 °C to +85 °C in a 9.7 × 10.1 mm LCC-18 package - deployed in vehicle tracking, fleet management, and emergency call systems.
For engineers reviewing the TESEO-LIV4FM datasheet, TESEO-LIV4FM pinout, TESEO-LIV4FM application, or TESEO-LIV4FM equivalent, key selection criteria include multiconstellation raw measurement support, real-time assisted GNSS (RT-AGNSS) capability, TCXO-stabilized timing for <1.5 s hot TTFF, and dual-interface (UART/I²C) NMEA output with configurable slave address and RTC-backed standby wake-up.
Technical Context
The TESEO-LIV4FM implements a multi-band, multi-constellation GNSS baseband processor with dedicated L1 (1575.42 MHz) and L5 (1176.45 MHz) RF paths, enabling concurrent acquisition and tracking of GPS, Galileo, GLONASS, BeiDou, and QZSS signals. Its embedded firmware supports SBAS (WAAS/EGNOS/GAGAN/MSAS) and RTCM v3 differential corrections via UART or I²C.
It integrates a temperature-compensated crystal oscillator (TCXO) for RF downconversion stability and a dedicated RTC domain powered by VBAT, enabling <10 μA standby current and fast reacquisition after deep sleep. Antenna supply (VCC_RF, pin 14) includes short/open-circuit detection with NMEA status reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| GNSS Constellations | GPS L1C/A+L5C, Galileo E1+E5a, GLONASS L1OF, BeiDou B1i+B2a, QZSS L1C/A+L5C, IRNSS-ready via firmware update |
| Tracking Sensitivity | -162 dBm (L1/L5, with external LNA); enables reliable positioning in urban canyons and under foliage |
| Position Accuracy | 0.7–0.8 m CEP 50% (24h static, roof antenna); meets submeter requirements for asset tracking and ADAS-adjacent use cases |
| Time To First Fix | 1.44 s (hot), 20.0 s (warm), 28.5 s (cold); accelerated by on-board RTC and RT-AGNSS ephemeris injection |
| Supply Voltage | VCC/VBAT: 3.0–3.63 V; supports single-rail design with backup retention during main power loss |
| Current Consumption | 48.8 mA (GNSS L1+L5 tracking), 10 μA (SW-STANDBY with RTC active); enables multi-year battery life in low-duty-cycle trackers |
| Operating Temperature | -40 °C to +85 °C; qualified for automotive-grade under-hood and outdoor telematics deployment |
Pinout & Package
Tiny 18-pin LCC (Leadless Chip Carrier) package, 9.7 × 10.1 mm footprint, 6-layer PCB construction, RoHS-compliant, designed for surface-mount reflow (peak 245 ±5 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 12 | GND / GND_RF | Dedicated analog/digital ground and RF ground planes; mandatory separation for noise immunity in GNSS front-end |
| 2 | UART-TX | Asynchronous serial output (NMEA/UBX); open-drain capable; must float if unused |
| 3 | UART-RX | Asynchronous serial input; accepts 3.3 V logic; internal pull-up enabled |
| 4 | PPS | Pulse-per-second time reference output (1 Hz, ±20 ns jitter); synchronized to GNSS time for precise timestamping |
| 5, 18 | WakeUp / PRG | Edge-triggered interrupt inputs; WakeUp initiates recovery from standby; PRG enters programming mode or wakes from DeepStandby |
| 6, 8 | VBAT / VCC | Backup and main 3.0–3.63 V supplies; VBAT maintains RTC and SRAM state during main power loss |
| 9 | nReset | Active-low hardware reset; internal pull-up; floating acceptable but not recommended for robustness |
| 11, 14 | RF_IN / VCC_RF | Antenna input with integrated SAW/LNA; VCC_RF supplies active antenna (2–40 mA OK); includes short/open detection |
| 16–17 | I2C_SDA / I2C_SCL | Configurable I²C slave interface (100/400 kHz); supports NMEA output and firmware configuration; address set via firmware tool |
Key Features
| Feature | Design Value |
|---|---|
| Real-time Assisted GNSS (RT-AGNSS) | Reduces TTFF in weak-signal environments by injecting real-time ephemeris via host MCU over UART/I²C - no local storage required |
| Embedded TCXO + RTC | Enables <1.5 s hot start and sub-20 ns PPS jitter; RTC domain remains powered by VBAT to retain time and assist rapid reacquisition |
| Dual-band L1+L5 Processing | Improves multipath rejection and ionospheric error correction vs. L1-only receivers - critical for urban and high-precision applications |
| Firmware Upgradability | Field-upgradable via UART using Teseo-Suite PC tool; supports new constellations (e.g., IRNSS), SBAS regions, and RTCM message types |
| Antenna Health Monitoring | VCC_RF current sensing reports OPEN/OK/SHORT status in NMEA $PSTMAST messages - enables autonomous antenna fault detection in remote deployments |
Applications
| Vehicle Telematics | Fleet Management |
|---|---|
|
Use Scenario: Real-time location reporting and geofence alerts for commercial trucks and delivery vans. IC Role / Device Role / Timing Role: Primary GNSS positioning engine delivering NMEA GGA/RMC sentences at 1–10 Hz via UART; PPS synchronizes event logging. Use Value: Submeter accuracy ensures precise stop/start detection at loading docks; -162 dBm sensitivity maintains lock during tunnel passages. |
Use Scenario: Multi-vehicle route optimization and driver behavior analytics across regional logistics networks. IC Role / Device Role / Timing Role: Dual-interface (UART + I²C) enables redundant data path to telematics control unit; RTC-backed standby minimizes battery drain during idle periods. Use Value: 10 μA SW-STANDBY extends battery life in disconnected assets; RT-AGNSS cuts cold-start delay after overnight parking. |
| Emergency Call Systems (eCall) | Pet & Asset Tracking |
|
Use Scenario: Automatic crash notification with precise location transmitted within 100 ms of airbag deployment. IC Role / Device Role / Timing Role: GNSS module triggered by MCU interrupt (WakeUp pin); outputs position + UTC time via UART before cellular handoff. Use Value: Hot TTFF ≤1.44 s ensures location is available before voice call connects; CE/RED certification satisfies EU regulatory mandate. |
Use Scenario: Battery-powered collars and cargo tags transmitting location every 5–30 minutes via LPWAN. IC Role / Device Role / Timing Role: Low-power positioning subsystem; uses VBAT-retained RTC to schedule periodic wake-ups and GNSS sessions. Use Value: 48.8 mA tracking current + 10 μA standby enables >2-year coin-cell operation; LCC-18 size fits compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GNSS module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| u-blox ANN-MB-00 | L1-only (no L5), higher 55 mA tracking current, no embedded TCXO (requires external), 16.0 × 16.0 mm LCC | Suitable for cost-sensitive L1-only use cases where submeter accuracy is not required | Select when budget constraints outweigh dual-band performance needs and board space allows larger footprint |
| Quectel L96-M33 | Supports L1+L5 but lacks RT-AGNSS server integration; requires host-side assistance data parsing; no VCC_RF health monitoring | Better suited for designs with existing cloud infrastructure to manage A-GNSS data pipelines | Choose when leveraging existing Quectel ecosystem tools and accepting added host firmware complexity for assistance |
Compared with u-blox ANN-MB-00 and Quectel L96-M33, TESEO-LIV4FM uniquely combines L1/L5 dual-band, embedded TCXO+RTC, RT-AGNSS server integration, and antenna health reporting in a compact LCC-18 - reducing BOM count, firmware effort, and time-to-market for submeter tracking applications.
Availability
TESEO-LIV4FM is available at Aetrix Electronics and suitable for vehicle telematics, fleet management, and emergency call systems requiring stable component supply, full regulatory compliance (RED/CE), and long-term industrial availability.
Supply support for TESEO-LIV4FM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power management ICs, and analog/mixed-signal devices for industrial, automotive, and consumer markets.
TESEO-LIV4FM belongs to ST's Teseo GNSS product line, engineered specifically for low-power, high-accuracy standalone positioning in space-constrained, battery-operated, and safety-critical applications - emphasizing ease of integration, firmware flexibility, and regulatory readiness.
FAQ
Does TESEO-LIV4FM support raw GNSS measurements (e.g., pseudorange, carrier phase) for RTK post-processing?
Yes. TESEO-LIV4FM outputs raw measurement data (pseudorange, carrier phase, Doppler, SNR) via proprietary UBX binary protocol over UART or I²C. This enables post-processing kinematic (PPK) and real-time kinematic (RTK) solutions when paired with a base station. Firmware version GNSSLIB_8.6.x.xx_ARM supports all required observables for L1/L5 dual-frequency processing.
What antenna configurations are validated for TESEO-LIV4FM, and what gain/noise figure limits apply?
ST validates active antennas with gain <36 dB and noise figure <1.5 dB. The module's integrated LNA and SAW filter are optimized for this range. Exceeding 36 dB gain risks saturation; exceeding 1.5 dB NF degrades C/N₀ and increases TTFF. Antenna impedance must be 50 Ω; VCC_RF (pin 14) supplies up to 40 mA and reports status via NMEA $PSTMAST.
How is RTC time maintained during main power loss, and what is its accuracy over temperature?
The RTC domain is powered exclusively by VBAT (pin 6) and uses a dedicated low-power regulator. With VBAT applied, it maintains time with ±3 ppm accuracy (±106 ppm over -40 °C to +85 °C) using internal clock trimming. Time updates are secured against corruption, and the RTC continues running during SW-STANDBY, enabling <10 μA retention and sub-second wake-up latency.
Can TESEO-LIV4FM operate without an external TCXO, and what is the impact on performance?
No - the TCXO is embedded and non-removable. It is integral to the RF front-end's frequency stability and directly enables the -162 dBm tracking sensitivity and <1.5 s hot TTFF. Removing or bypassing it is not supported and would disable GNSS functionality. The TCXO is factory-calibrated and temperature-compensated across the full operating range.
TESEO-LIV4FM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 18-SMD Module
- Packaging:
- Tray
- Product Status:
- Active
- Frequency:
- -
- Sensitivity:
- -162dBm
- Data Rate (Max):
- -
- Modulation or Protocol:
- BeiDou, Galileo, GLONASS, GNSS, GPS
- Applications:
- GPS
- Current - Receiving:
- 36mA
- Data Interface:
- -
- Memory Size:
- -
- Antenna Connector:
- Not Included
- Features:
- -
- Voltage - Supply:
- 3V ~ 3.63V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-LCC (9.7x10.1)
TESEO-LIV4FM FAQ
1.How can I place an order for TESEO-LIV4FM through Aetrix?
Please submit a Request for Quotation (RFQ) for TESEO-LIV4FM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TESEO-LIV4FM reliable?
The price and inventory of TESEO-LIV4FM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TESEO-LIV4FM is usually 5 days.
3.What payment methods are accepted for TESEO-LIV4FM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TESEO-LIV4FM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TESEO-LIV4FM?
TESEO-LIV4FM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TESEO-LIV4FM order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TESEO-LIV4FM?
For technical support, including TESEO-LIV4FM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TESEO-LIV4FM requirements.
6.How does Aetrix verify that TESEO-LIV4FM is sourced from the original manufacturer or authorized distributors?
All TESEO-LIV4FM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TESEO-LIV4FM meets industry standards.
7.What is the process for return or replacement of TESEO-LIV4FM?
All TESEO-LIV4FM units undergo pre-shipment inspection (PSI). If there is an issue with TESEO-LIV4FM, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TESEO-LIV4FM part is unused and in its original packaging.
Return procedure for TESEO-LIV4FM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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