GPS Module (SLE-1513)
The SLE-1513 is the newest generation of KNCTEK GPS Module. The GPS Module is powered by SkyTraq technology and KNCTEK proprietary navigation algorithm that providing you more stable navigation data. The miniature design is the best choice to be embedded in a portable device like PND, PDA, Telematics and vehicle locator. The excellent sensitivity of SLE-1513 gets the great performance when going though the urban canyon and foliage environmental condition.
PRODUCT FEATURES
- Total 65 channels: 51 Channels for Acquisition, 14 Channels for Tracking
- Operable from 3.3V/80mA for Acquisition and 23mA for tracking Mode
- A-GPS and SBAS(WAAS, EGNOS, GAGAN) supported
- Signal detection better than -161dBm in Ultra High Tracking Sensitivity
- Enhanced Warm/Hot Acquisition Sensitivity at -157dBm
- Cold start sensitivity start from -147dBm
- Fast TTFF <28 seconds in Warm start and 29 seconds for Cold start
- Excellent Sensitive for Urban Canyon and Foliage Environmental condition
- NMEA-0183 compliant protocol
- Automotive-grade Quality GPS solution
- Small form factor (15X13X2.2mm)
- ODM/OEM development is fully supported Application Engineering
- Hardware and Software support from a dedicated GPS team
PRODUCT APPLICATION
- Automotive applications
- Speed camera detector
- Personal and Car navigation Devices
- Marine navigation
- Timing application
1. Electrical Characteristics
1.1 Absolute Maximum Rating
|
Parameter
|
Symbol
|
Min
|
Max
|
Units
|
| Power Supply |
|
Power Supply Volt
|
VCC
|
-0.3
|
3.6
|
V
|
| Input Pins |
|
Input Pin Voltage I/O
|
RX
|
-0.3
|
3.6
|
V
|
|
Backup Battery
|
Vbat
|
1.8
|
3.6
|
V
|
| Environment |
|
Operating Temperature
|
Topr
|
-40
|
85
|
°C
|
|
Storage Temperature
|
Tstg
|
-40
|
125
|
°C
|
|
Backup Battery Operating Temperature *1
|
Tbat
|
-20
|
65
|
°C
|
|
Peak Reflow Soldering Temperature<10S
|
Tpeak
|
|
260
|
°C
|
|
Humidity
|
|
|
95
|
%
|
** 1 Backup Battery operating temperature depends on Battery characteristics
Note : Absolute maximum ratings are stress ratings only, and functional operation at the maximums is not guaranteed. Stress beyond the limits specified in this table may affect device reliability or cause permanent damage to the device.
For functional operating conditions, please refer to the operating conditions tables as follow. |
1.2 Operating Condition
|
Parameter
|
Symbol
|
Condition
|
Min
|
Typ
|
Max
|
Units
|
|
Power Supply voltage
|
Vcc
|
|
3
|
3.3
|
3.6
|
V
|
|
Power Supply voltage ripple
|
Vcc-pp
|
Vcc=5.0V
|
|
|
30
|
mV
|
|
Acquisition current
|
IccA
|
Vcc=3.3V
|
|
70
|
80
|
mA
|
|
Tracking current
|
IccT
|
Vcc=3.3V
|
|
23
|
|
mA
|
|
Input high voltage
|
VIH
|
|
2
|
|
|
V
|
|
Input low voltage
|
VIL
|
|
|
|
0.8
|
V
|
|
Output high voltage
|
VOH
|
|
2.9
|
|
|
V
|
|
Output low voltage
|
VOL
|
|
|
|
0.4
|
V
|
2. General & Performance Specification
|
Parameter
|
Specification
|
|
Receiver Type
|
L1 frequency band, 51 Channel Acquisition, 14 Channel Tracking |
|
Sensitivity
|
Tracking : -161dBm
Re-acquisition : -157dBm
Cold start : -148dBm |
|
Accuracy
|
Position : 2.5m CEP
Velocity : 0.1m/s
Timing(PPS) : 61ns RMS |
|
Acquisition Time
|
Cold Start : 29 sec. typical (Open sky1)
Warm Start : 25 sec. typical (Open sky)
Hot Start : 1 sec. typical (Open sky)
Reacquisition Time : 1 sec
A-GPS Support : 4 sec average |
|
Power Consumption
|
Tracking : 23mA at 3.3V
Acquisition : 70mA
Back-up : 6uA at 3V |
|
Navigation Data Update Rate
|
1Hz |
|
Operational Limits
|
Velocity : Max 515 m/s
Altitude : Max 18,000m
Acceleration : Less than 4g |
|
Mechanical data
|
Dimension : 15.0x13.0x2.2mm
Weight : 1.0grams ±5% |
|
Protocol
|
NMEA-0183 V3.01 |
| Open Sky means no obstructions in the sky |
Recommended GPS Active Antenna
It's recommended to use a GPS active external antenna with supply voltage of 3.3VDC and a current draw of 15mA maximum. The quality of the GPS active external antenna chosen is of paramount importance for the overall sensitivity of the GPS system. A GPS active external antenna should have ≥ 20dB gain and a noise figure ≤ 1.5dB, which applies to more than 90% of the antennas available in the market.
|
Characteristics
|
Specification
|
|
Center Frequency
|
1575.42±1.023MHz
|
|
Band Width(-10dB return loss)
|
10MHz
|
|
Gain at Zenith
|
5.0dBi Typical
|
|
VSWR
|
2.0 : 1 Max
|
|
Polarization
|
R.H.C.P
|
|
Axial Ratio
|
3.0dB max
|
|
Gain
|
Typical 25dB ( more than 20dB)
|
|
Noise Figure
|
1.5dB
|
|
Out Band Attenuation
|
20dB min for ±50MHz
|
|
Voltage
|
3.3 ± 10%VDC or 3.0 ~ 3.6 VDC
|
|
Current
|
< 15 mA
|
Definition of PIN Assignment
|
PIN
|
SIGNAL Name
|
I/O
|
DESCRIPTION
|
CHARACTER
|
|
1
|
NC
|
-
|
Not connecting
|
|
|
2
|
NC
|
-
|
Not connecting
|
|
|
3
|
PPS
|
O
|
One pulse per second
|
If the position is fixed, the output is ok
|
|
4
|
TX_A
|
O
|
UART TX
|
NMEA_TX : UART output, 3.3V LVTTL
|
|
5
|
RX_A
|
I
|
UART RX
|
NMEA_RX : UART input, 3.3V LVTTL
|
|
6
|
STATUS
|
O
|
GPS Status
|
|
|
7
|
NC
|
-
|
Not connecting
|
|
|
8
|
NC
|
-
|
Not connecting
|
|
|
9
|
NC
|
-
|
Not connecting
|
|
|
10
|
NC
|
-
|
Not connecting
|
|
|
11
|
VBAT
|
I
|
Backup Battery supply
|
DC +1.8V ~ +3.3V
|
|
12
|
VCC
|
I
|
DC Power Supply Voltage input
|
DC +3.3V ± 10%
|
|
13
|
NC
|
-
|
Not connecting
|
|
|
14
|
NC
|
-
|
Not connecting
|
|
|
15
|
NC
|
-
|
Not connecting
|
|
|
16
|
BOOT_EN
|
-
|
Not connecting
|
|
|
17
|
VCC_RF
|
O
|
Voltage output of VCC_RF
|
VCC_RF Voltage : VCC
|
|
18
|
RF_GND
|
GND
|
Analog Ground(RF)
|
|
|
19
|
RF_IN
|
I
|
GPS Signal INPUT
|
50ohm at 1.57542GHz
|
|
20
|
RF_GND
|
GND
|
Analog Ground(RF)
|
|
|
21
|
GND
|
GND
|
Ground
|
|
|
22
|
GND
|
GND
|
Ground
|
|
VCC DC Power Input
This is the main power supply for the Engine board. The power range is from 3.3V ±10%(the maximum and minimum voltage is 3.0V to 3.6V). Suitable decoupling must be provided by external decoupling circuitry.
GND
GND provides the ground for the Engine board. Connect all grounds.
VBAT
This is the battery backup supply that powers the SRAM and RTC when main power is removed. The input voltage level is from 1.8V ~ 3.3V. Without an external backup battery or on board battery, engine board will execute a cold start after every turn on. To achieve the faster start-up offered by a hot or warm start, either a backup battery must be connected or battery installed on board.
TX_A
NMEA_TX, UART output, 3.3V LVTTL logic level. This is the main transmit channel and is used to output navigation. The default setup is NMEA Output, 9600bps, 8 data bits, no parity, 1 stop bit. The default sentences are GPGGA, GPGSA, GPRMC, GPGSV.
RX_A
NMEA_RX, UART input,3.3V LVTTL logic level. This is the main receiving channel.
It is generally recommend you to consider serial resistor between a certain CPU's TX and
SLS-1613 module’s RX in order to reduce possible noise interruption for noisy CPU's transmission. The resistor value should be decided by set testing in user application.
Based on our experience, 10KOhm resistor could be applicable for -40 to 80°C temperature condition.
RF_IN
The line on the PCB from the antenna(or antenna connector)has to be a controlled line (Micro strip at 50ohm at 1575.42MHz)
