AC4790-200A-485 Laird Technologies, AC4790-200A-485 Datasheet - Page 10

• 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

6
S P E C I F I C A T I O N S
1. When ordered with a RS-485 interface (not available on the AC4790-1x1).
2. Must be tied to VCC or GND if not used. Should never be permitted to float.
3. If used, requires a shunt 0.1μF capacitor at pin 15 followed by a series 1k resistor.
Module
Pin
N/A
N/A
13
14
15
16
17
18
19
20
1,8,20
24-28
1x1
Pin
21
15
12
16
13
17
18
14
22
2
3
Type
GND
N/C
RF
O
O
I
I
I
I
I
T a b l e 2 : A C 4 7 9 0 P i n D e f i n i t i o n s
UP_RESET
CMD/Data
Connect
Signal
Session
Name
RF Port
Do Not
Status
AD In
Reset
RSSI
GND
GI1
Received Signal Strength - An analog output giving an instantaneous
indication of received signal strength. Only valid while in Receive
Mode.
Generic Input pin
RESET – Controlled by the AC4790 for power-on reset if left
unconnected. After a stable power-on reset, a logic High pulse will
reset the transceiver.
Signal Ground
When logic Low, the transceiver interprets OEM Host data as
command data. When logic High, the transceiver interprets OEM
Host data as transmit data.
10 bit Analog Data Input
Has internal connection, for Laird Technology use only.
When logic Low, the transceiver is in Session
RF Interface
Active Low version of UP_RESET. If RESET is used, UP_RESET
should be left floating and if UP_RESET is used, RESET should be
left floating.
Function