Doc. No: Unex-QSG-21-003
8/23
A printed version of this document is an uncontrolled copy
© 2021 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
Tracking
-162
-
-125
dBm
GNSS LNA bias
I
LNA
≤ 20mA
3.0
-
3.3
V
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)
7.3.
Power Consumption
SOM-301(v2)/SOM-351 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
FW 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
Note:
*1: CPU idle and V2X stack loaded.
*2: CPU 50% and V2X transmitting 400 bytes at 20dBm every 100ms.
*3: Hardware upper limit.
*4: From mini PCIe 5V (pin 3, 5, 45, 47)
*5: From mini PCIe 3.3 Vaux (pin 2, 24, 39, 41, 52)
