Doc. No: Unex-QSG-21-003
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© 2023 Unex Technology Corporation – Company Confidential
Parameters
Conditions
Min.
Typ. Max. Unit
mPCIe 1PPS (P49) tolerance
Accuracy/Bias
-100
-
100
ns
Precision/Jitter
-30
-
30
ns
Pulse width
15
-
-
ns
V2X sensitivity
PER ≤ 10%
-92
-
-
dBm
PER ≤ 10%,
-40 - +85 °C
-82
-
-
dBm
V2X maximum input level
PER ≤ 10%
-
-
-30
dBm
V2X adjacent channel rejection
-
13
-
-
dB
V2X non-adjacent channel rejection
-
29
-
-
dB
V2X output power
Spectrum mask
Class C
-
-
20
dBm
GNSS sensitivity (C/N
0
)
Acquisition
22
30
45
dB-
Hz
GNSS antenna bias
I
ANT
≤ 20mA
3.0
-
3.3
V
GNSS antenna detection current
I
ANT
*6
12
-
58
mA
GNSS maximum total external gain
Gain/loss combined
-
-
24
dB
Note:
*1: UART = UART_RX (mPCIe P17) / UART_TX (mPCIe P19) / RXD (Molex P2) / TXD (Molex P3)
*2: TRIGGER_SW (SW1.7) = ON
*3: TRIGGER_SW (SW1.7) = OFF
*4: IOL = Low level output current (UART_TX)
*5: IOH = High level output current (UART_TX)
*6: I
ANT
under Min. = OPEN; I
ANT
over Max. = SHORT; I
ANT
between Min/Max. = NORMAL.
7.3.
Power Consumption
SOM-352 can be powered in three different ways: dual voltage (5V/3.3V), external
cable (5V/3.3V), and single voltage (3.3V). The data listed in table 3, 4, and 5 serve only
as a reference for system integrators. The actual conditions will vary depending on firmware
version and user applications.
Table 3. Dual voltage power consumption
Condition
Power Consumption (A)
Temp.
Power Source
Voltage (V)
Low
*1
Typical
*2
High
*3
25°C
5V
*4
5
0.34
0.40
2.0
3.3 Vaux
*5
3.3
0.100
0.105
0.110
85°C
5V
*4
5
0.38
0.44
2.0
3.3 Vaux
*5
3.3
0.105
0.110
0.115
