The A5135-H will track and follow GPS and GLONASS systems concurrently

The A5135-H is a high-sensitivity concurrent GNSS antenna receiver that integrates Qualcomm’s SiRFstar V technology into a single, compact and easy to integrate SMT device.

By supporting simultaneous GLONASS, GPS, QZSS and SBAS measurements with the industry’s best sensitivity engine, the highest accuracy, ground tracks and fastest time-to-first-fix (TTFF) are ensured even under tough operating conditions.

Product Highlights

  • Concurrent GNSS receiver
  • Pin-to-pin compatible with A2135-H / A2235-H
  • Lowest tracking power consumption
  • Download SiRF Live

Key Markets

NDAA Compliant

A5135-H Overview

Concurrent GNSS receiver

The A5135-H will track and follow GPS and GLONASS systems concurrently. Dual reception of GPS and BeiDou or even concurrent GLONASS and BeiDou reception is still possible by setting up the parameters. Our fine tuned signal reception and sophisticated software algorithms improve availability and accuracy in urban canyon environments.

Pin-to-pin compatible with A2135-H / A2235-H

This A5135-H is pin-to-pin compatible with Lantronix A2135-H / A2235-A. Power, ground and dedicated pins are at the same location across device densities in order to adapt to your current design.

Lowest tracking power consumption

SiRFaware’s advanced low power management modes, high level of integration and multiple communication ports in a small form-factor makes the A5135-H suitable for a broad spectrum of GNSS applications where performance, cost and time to market are prime considerations.

Download SiRF Live

Test the performance of Lantronix GNSS receivers and develop your application with SiRF Live software. Download here

A5135-H Tech Specs

Channels 52
Frequency GPS LI – 1,575 MHz GLONASS – 1,602 MHz
Sensitivity1 GPS GLONASS
Tracking – 165 dBm – 163 dBm
Navigation – 160 dBm – 159 dBm
Acquisition (cold start) – 147 dBm
Position Accuracy2) (horizontal) < 2.5 m CEP (autonomous)

< 2.0 m CEP SBAS

Time To First Fix
Hot Start2) < 1 s
Warm Start2) < 30 s
Cold Start2) < 35 s
Update Rate 1 Hz / 5 Hz Supported
SiRFnavTM High availability and coverage; improved TTFF in weak signal environments
Jammer remover technology Detects and removes up to 8 in-band jammers with minimal loss of sensitivity
A-GPS Embedded Extended Ephemeris (SiRFInstantFix) and Ephemeris Push support
MEMS I2C interface Prepared to use additional sensor information for improved navigation
Open Socket Protocol Protocol extension for SiRFstarV
Baud rate Switchable 115.2k (default) 1,200 to 115.2k
Ports Tx (Binary output) Rx (Binary input)
UART – NMEA (default)
NMEA message Switchable GGA, RMC, GSA, GSV, VTG, GLL, ZDA
Baud rate Switchable 1,200 to 115.2k

Default 9600

Ports Tx (NMEA output) Rx (NMEA input)
Supply voltage 3.0 to 3.6 VDC
Average Current Draw (typical)
Full power mode (Searching) Peak Current 42mA
Full power mode (Searching) Average Current 36mA
Full power mode (Tracking) Average Current 31mA
Trickle Power Mode 29mA
Hibernate Status 27uA


L x W x H 17.78 x 16..01 x 2.5 mm
L x W x H 0.7” x 0.65” x 0.1”
Weight 4 g / 0.14 oz.
Operating -40°C to +85°C
Storage -40°C to +85°C
Humidity Non condensing

A5135-H Downloads

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GNS Receivers
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GNSS A5135H - SiRFstarV-based 52-channel GNSS receiver built-in patch antenna, -147 dBm acquisition sensitivity, -160 dBm navigation sensitivity, I²C MEMS interface

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