Datasheet: http://usglobalsat.com/store/download/681/eb-5631re_user_manual.pdf
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Parameter |
Min. |
Typ. |
Max. |
Conditions |
Unit |
POWER Supply |
|||||
Main power supply(VCC) |
3.1 |
3.3 |
3.5 |
|
V |
Backup battery supply |
2.0 |
|
3.5 |
|
V |
Main power supply Current |
45 |
50 |
55 |
GPS is not 3D Fixed. |
mA |
Backup battery supply Current |
35 |
38 |
45 |
GPS is 3D Fixed. |
uA |
RF POWER Supply |
|
VCC |
|
|
V |
RF Input |
|||||
Input Impedance |
|
50 |
|
|
Ω |
Operating Frequency |
|
1.575 |
|
|
GHz |
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Conditions |
Units |
High Level Input Voltage |
VI H |
0.7*VCC |
|
3.6 |
|
V |
Low Level Input Voltage |
VI L |
-0.4 |
|
0.45 |
|
V |
High Level Output Voltage |
VOH |
0.75*Vgcc |
|
Vgcc |
|
V |
Low Level Output Voltage |
VOL |
|
|
0.4 |
|
V |
High Level Output Current |
IOH |
|
2 |
|
|
mA |
Low Level Output Current |
IOL |
|
2 |
|
|
mA |
Vgcc is SiRF Star IV Chip power input, 1.8V Vin.
Sensitivity |
Tracking : Autonomous acquisition : |
-163dBm -160 dBm |
Time-To-First-Fix1 |
Cold Start – Autonomous |
< 35s |
<15s (with CGEE) |
||
Warm Start – Autonomous2 |
< 35s |
|
< 15s(with CGEE) |
||
Hot Start – Autonomous3 |
< 1s |
|
Horizontal Position Accuracy4 |
Autonomous |
< 2.5m |
Velocity Accuracy5 |
Speed Heading |
< 0.01 m/s < 0.01 degrees |
Reacquisition |
0.1 second, average |
|
Update Rate |
1 Hz |
|
Maximum Altitude |
< 18,000 meter |
|
Maximum Velocity |
< 515 meter/ second |
|
Maximum Acceleration |
< 4G |
<Note>
1. 50% -130dBm Fu 0.5ppm Tu ±2s Pu 30Km
2. Commanded Warm START
3. Commanded Hot START
4. 50% 24hr static, -130dBm
5. 50% @ 30m/s
Parameter |
Min |
Typ |
Max |
Unit |
Humidity Range |
5 |
|
95 |
% non-condensing |
Operation Temperature |
-40 |
|
85 |
℃ |
Storage Temperature |
-40 |
|
85 |
℃ |
Type |
36-pin stamp holes |
Dimensions |
15.9 mm * 13.1 mm * 2.7mm ±0.2mm |
RF_IN
This pin receives signal of GPS analog via external active antenna. It has to be a controlled impedance trace at 50ohm. Do not have RF traces closed the other signal path and routing it on the top layer. Keep the RF traces as short as possible.
GND
This is Ground pin for the baseband circuit.
VBAT
This is the battery backup power input for the SRAM and RTC when main power is off. Without the external backup battery, EB-365 will always execute a cold star after turning on. To achieve the faster start-up offered by a hot or warm start, a battery backup must be connected. The battery voltage should be between 2.0V and 3.5V.
NC
EB-5631RE reserves pin, Just NC.
VCC
This is the main power supply to the engine board. (3.1Vdc to 3.5Vdc)
RESET
Low Active, when EB-5631RE is accepted this single, EB-5631RE going to Hibernate mode. If want EB-5631RE up, need input ON_OFF single.
GPIO
User can use this I/O pin for special functions. (For example, control LED)
TIMEMARK
This pin provides one pulse-per-second output from the board, which is synchronized to GPS time. This is not available in Trickle Power mode. If do not use it, Just NC.
ON_OFF
The ON_OFF pin commands the EB-5631RE ON or OFF. There are multiple methods of connecting this pin for different applications in order to minimise host resource requirements.
The ON_OFF pin is used to command the EB-5631RE to turn on or off:
l The turn on command is a hardware feature of the Power Control FSM based on sensing a rising edge on the pin.
l The turn off command is a software feature based on interrupts related to rising and/or falling edges and/ or sensing of pin levels. (Not currently supported.)
The ON_OFF pin processing is carried out by the Power Control FSM. The ON_OFF rising edge event during low power modes is recorded in a status register that is subsequently read by the processor once it is running. When the processor is running at the time of an ON_OFF event, the processor can poll the status or set-up an interrupt.
WAKE_UP
System power controller, when EB-5631RE Power ON, this pin will output 1.8Vdc.
TXD
This is the main transmits channel for outputting navigation and measurement data to user’s navigation software or user written software. Output is TTL level, 0V ~ 2.85V.
RXD
This is the main channel for receiving software commands from SiRFDemo software or from your proprietary software.