Electrical specifications

Electrical Absolute Maximum Rating

Parameter	Min.	Typ.	Max.	Unit
VCC to VSS				V
VSS to GND				V
VSS to MAIN_SGND
VSS to AUX_SGND
Digital Input Voltage to Signal Reference ( GND, MAIN_SGND, AUX_SGND ... )				V
Digital Ouput Voltage to Signal Reference ( GND, MAIN_SGND, AUX_SGND ... )				V

Precaution about ESD

Overview

Input Power Supply Voltage
Current Drawn @ +3.3V, +5V, +12V, +28V
Power
Compliance
- MIL-STD-1275
Board Connection Overview
- Figure : Assembly 3D view
  - Fasteners
  - Mating connectors or cables
- Connectors Specifications
  - Connector Overview
    - Identification
  - Connector Environmental & Mechanical Specifications
    - Table :
      - Characteristic Performance & Standard
      - Sealing performance (Mated & unmated)
      - Sealing performance soft caps
      - Operating Temperature Range
      - Corrosion Resistance Salt mist
      - Endurance mating cycles
      - Vibration, random
      - Shock
      - Characteristic Performance Standard
      - Shell Resistance
      - Insulation Resistance
      - Shielding Effectiveness
    - Connector Keying
      - Table : Connector Keying
        Connector
        Key Code
        Key Pattern

PCB Footprint

Figure : PCB Footprint
- Hole to Hole dimensions
- Hole to Connector dimensions

Interfaces Specifications

I/O Interface Specification

Table : I/O Connector Specifications
- Onboard connector
  - Manufacturer
  - Manufacturer P/N
  - Description
- Mating connectors
  - Manufacturer
  - Manufacturer P/N
  - Description
- Figure : I/O Connector Pinout relative to footprint
  - Notch/Index reference
  - Mounting holes, top view
  - Pin arrangement/numbering : Pin 1, Pin N/2-1, Pin N/2, Pin N, top view
- Table : I/O Connector Pinout
  - Pin #
  - Pin/Signal Name
  - Type
  - Description
  - Connection Tips
- Table : I/O Electrical Specifications ( recommended operation )
  - Power Supply ( Condition – Min – Nom – Max – Unit )
    - Input Voltage Range
    - Typical Power Consumption
    - Current Consumption
    - Voltage Spike Protection Energy
    - Voltage Surge Protection
    - Reverse Voltage Protection
  - LVTTL
  - RS232
  - RS422
    - Driver Specifications
      - Parameter Condition Min Nominal Max Unit
      - Differential Driver Output Voltage
      - Difference in Magnitude of Driver
      - Differential Output Voltage for Complementary Output States
      - Driver Common Mode Output Voltage
      - Difference in Magnitude of Driver
      - Common Mode Output Voltage for Complementary Output States
      - Maximum Driver Short-Circuit Current
    - Receiver Specifications
      - Parameter Condition Min Nominal Max Unit
      - Receiver Input Resistance 96 125 k Ω
      - Receiver Termination Resistance Enabled
      - Receiver Input Current (Rx- to Rx+)
      - Receiver Differential Input Threshold Voltage (RX- minus RX+)
      - Receiver Input Failsafe Hysteresis
      - Receiver Input Failsafe Threshold
    - SYNC IN/OUT and other General Purpose I/O pins
      - Input low level voltage
      - Input high level voltage
      - Weak pull-up equivalent resistor
      - Output low voltage
      - Output high voltage
      - Output drive current
      - Output high to low fall time
      - Output low to high rise time
      - Output Frequency
    - Isolated
      - Parameter Condition Min Nominal Max Unit
      - Isolation Voltage
      - Working Isolation Voltage
        Power ground relative to Signal ground
        Signal ground relative to
      - ESD Protection
      - Input Logic-High Voltage
      - Input Logic-Low Voltage
      - Output Logic-High Voltage
      - Output Logic-Low Voltage
      - Input Capacitance 2 pF
  - Table : Timing Specifications ( recommended operation )

GNSS Antenna Interface Specifications

Onboard connectors

Manufacturer	Manufacturer P/N	Description

Note : SBG-SYSTEMS could use other connectors while maintaining the correct match with the corresponding connectors listed below.

Mating Connectors

Manufacturer	Manufacturer P/N	Description

Figure ( Gliffy Diagram : Product_GNSS_Connectors_Identification ) : picture of the label showing
- Product
- GNSS RF Connectors
- Naming of GNSS RF Connectors

GNSS Antenna Port Electrical Specifications

Parameters	Conditions	Min.	Typ.	Max.	Units
Output Voltage (No load)		4.8	5	5.2	V
Output Current	When 2x GNSS antennas are connected	-	-	125	mA
Current-limit switch Full-load limit		-	-	130	mA
No-load Current limit		1	-	5	mA
Short-circuit current limit response time		-	-	10	µs
ESD Circuit protection	-	-15	-	15	kV

GNSS Antenna Requirements

Parameters	Requirements
Type	Active, featuring embedded LNA ( Low Noise Amplificator )
Minimum Gain	17 dB
Maximum Gain	50 dB
Maximum Noise Figure	4 dB
Group delay variation in-band	10 ns max at each GNSS system bandwidth. Note : Inter-signal requirement 50 ns max.
Out-of-band rejection	40 dB typ
Axial ratio	2 dB
Phase center variation	<10 mm over elevation/azimuth
EMI immunity out-of-band	< 30 V/m

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