AC4486-5A-485 Laird Technologies, AC4486-5A-485 Datasheet - Page 32

• 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
4.6.17 Read ADC
The Host issues this command to read any of the three 10 bit onboard A/D converters. Because the
RF is still active in on-the-fly mode, the transceiver will not process the command until there is no
activity on the network. Therefore, the Read RSSI command is useful for detecting interfering sources
but will not report the RSSI seen from a remote transceiver on the network. The equations for
converting these 10 bits into analog values are as follows:
Analog Voltage = (10 bits / 3FFh) * 3.3V
Temperature (°C) = ((Analog Voltage - 0.3) / 0.01) - 30
RSSI Value (dBm) = -105 + (0.22 * (3FFh – 10 bits))
Host Command:
Transceiver Response:
01/21/05
Byte 1 = CCh
Byte 2 = 21h
Byte 3 = Data1
Where:
Data1 = 00h – AD In, 01h – Temperature (if equipped), 02h – RSSI
Byte 1 = CCh
Byte 2 = Data1
Byte 3 = Data2
Where:
Data1 = MSB of requested 10 bit ADC value
Data2 = LSB of requested 10 bit ADC value
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