AC4790-200A-485 Laird Technologies, AC4790-200A-485 Datasheet - Page 27

• Manufacturer Part Number: AC4790-200A-485
• Description: TXRX 900MHZ 3.3-5.5V FHSS 200MW
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4790-200A-485

• Frequency: 902MHz ~ 928MHz
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FHSS, FSK
• Applications: AMR, Fire & Security Alarms, Telemetry
• Power - Output: 5mW ~ 200mW
• Sensitivity: -110dBm
• Voltage - Supply: 3.3V, 5V
• Current - Transmitting: 68mA
• Data Interface: Connector, 2 x 10 Header
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Wireless Frequency: 900 MHz
• Interface Type: 20-pin mini connector
• Board Size: 49 mm x 42 mm x 5 mm
• Modulation: FHSS, FSK
• Security: 1 byte System ID, DES
• Operating Voltage: 3.3 V to 5.5 V
• Output Power: 200 mW
• Antenna: Integral and External Dipole
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

U P _ R e s e t
UP_Reset provides a direct connection to the reset pin on the AC4790 microprocessor and is used to force a soft
reset. For a valid reset, reset must be asserted High for a minimum of 10ms.
C o m m a n d / D a t a
When logic High, the transceiver interprets incoming OEM Host data as transmit data to be sent to other transceivers
and their OEM Hosts. When logic Low, the transceiver interprets OEM Host data as command data.
A D I n
AD In can be used as a cost savings to replace Analog-to-Digital converter hardware. Reading of this pin can be
performed locally using the Read ADC command found in the On-the-Fly Control Command Reference.
S e s s i o n S t a t u s
Reports logic Low during a Session and logic High when not in Session. The inverse of this pin can be obtained from
pin GO0 when Protocol Status is enabled.
1.2
0.8
0.6
0.4
0.2
1
0
-105
F i g u r e 4 : R S S I V o l t a g e v s . R e c e i v e d S i g n a l S t r e n g t h
-100
-95
-90
www.lairdtech.com\wireless
-85
Signal at Re ce iv e r (dBm)
-80
-75
-70
-65
-60
H A R D W A R E I N T E R F A C E
-55
-50
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