AC4486-5A-485 Laird Technologies, AC4486-5A-485 Datasheet - Page 40

• Manufacturer Part Number: AC4486-5A-485
• Description: TXRX 868MHZ 3V TTL 5MW RS485
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4486-5A-485

• Frequency: 868MHz
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FSK
• Applications: AMR, Gaming Devices, Inventory Tracking
• Power - Output: 5mW
• Sensitivity: -100dBm
• Voltage - Supply: 3.3V
• Current - Receiving: 30mA
• Current - Transmitting: 40mA
• Data Interface: Connector, 2 x 10 Header
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Board Size: 49 mm x 42 mm x 5 mm
• Output Power: 5 mW
• Antenna: External MMCX Connector
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AC4486 Specifications
Validated RSSI
As RSSI values are only valid when the local transceiver is receiving a RF packet from a remote
transceiver, instantaneous RSSI can be very tricky to use. Therefore, the transceiver stores the most
recent valid RSSI value. The Host issues the
(details can be found in the
at the RSSI pin. The following equation approximates the RSSI curve:
Signal Strength (dBm) = (-46.9 * V
5.1.8 UP_Reset (pin 15)
UP_Reset provides a direct connection to the reset pin on the AC4486 microprocessor and is used to
force a soft reset. For a valid reset, reset must be High for a minimum of 10ms.
5.1.9 Command/Data (pin 17
When logic High, the transceiver interprets incoming Host data as transmit data to be sent to other
transceivers and their Hosts. When logic Low, the transceiver interprets Host data as command data
(see section 4).
01/21/05
1.2
0.8
0.6
0.4
0.2
1
0
-105
-100
Figure 1 – RSSI Voltage vs. Received Signal Strength
-95
On- he-Fly Control Command Reference
-90
t
RSSI
-85
)
) - 53.9
Signal at Receiver (dBm)
Report Last Good RSSI
-80
-75
-70
). Validated RSSI is not available
command to request that value
-65
-60
-55
-50
40