AC4490LR-200M Laird Technologies, AC4490LR-200M Datasheet - Page 11

• Manufacturer Part Number: AC4490LR-200M
• Description: TXRX 900MHZ 3.3-5.5V TTL 200MW
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4490LR-200M

• 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: MMCX
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Output Power: 200 mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AC4490 User’s Manual
P I N D E F I N I T I O N S
The AC4490 has a simple interface that allows OEM Host communications with the transceiver. Table 2 below shows
the connector pin numbers and associated functions.
Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin
4
6
7
5
3
9
10
19
2
11
23
12
21
16
13
1x1
2
Pin
2
2
O
O
I/O
I
I/O
GND
O
O
I
O
PWR
PWR
I
O
I
I
GND
Type
GO0
TXD
RS485 A
(True)
RXD
RS485 B
(Invert)
GI0
GND
Hop Frame
CTS
RTS
GO1
VCC
VPA
Test
RSSI
GI1
UP_RESET
GND
Signal
Name
1
T a b l e 2 : A C 4 4 9 0 P i n D e f i n i t i o n s
1
Generic Output pin
Serial data output from the module to the OEM Host.
Non-inverted RS-485 representation of serial data
Serial data input to the module from the OEM Host.
Mirror image of RS-485 A
Generic Input pin
Signal Ground
Pulses low when the transceiver is hopping frequencies.
Clear to Send – Active Low when the transceiver is ready to accept data for transmission. CTS
should be monitored by the OEM Host & data flow to the radio should cease when CTS is High.
Request to Send – When enabled in EEPROM, the OEM Host can take this High when it is not
ready to accept data from the transceiver.
NOTE: Keeping RTS High for too long can cause data loss.
Generic Output pin
Powers the radio and microcontroller. Must be connected.
1x1:
200:
1000:
Powers the power-amplifier and draws most current when in TX mode. Must be connected.
1x1:
200:
1000:
Test Mode – When pulled logic Low and then applying power or resetting, the transceiver’s
serial interface is forced to a 9600, 8-N-1 rate. To exit, the transceiver must be reset or power-
cycled with Test Mode logic High.
Received Signal Strength - An analog output giving an instantaneous indication of received sig-
nal strength. Only valid while in Receive Mode.
Generic Input pin
RESET – Controlled by the AC4490 for power-on reset if left unconnected. After a stable power-
on reset, a logic High pulse will reset the transceiver.
Signal Ground
www.aerocomm.com
3.3V, ±50mV ripple
3.3 – 5.5V, ±50mV ripple (Pin 10 is internally connected to Pin 11)
3.3 – 5.5V, ±50mV ripple
3.3V, ±50mV ripple
3.3 – 5.5V, ±50mV ripple (Pin 11 is internally connected to Pin 10)
3.3V ±3%, ±100mV ripple
Function
S P E C I F I C A T I O N S
5