AC4490-1000M-485 Laird Technologies, AC4490-1000M-485 Datasheet - Page 56

• Manufacturer Part Number: AC4490-1000M-485
• Description: TXRX 900MHZ 3.3V TTL 1W
• Manufacturer: Laird Technologies
• Series: AeroCommr

Specifications of AC4490-1000M-485

• Frequency: 902MHz ~ 928MHz
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FHSS, FSK
• Applications: AMR, Fire & Security Alarms, Telemetry
• Power - Output: 5mW ~ 1W
• Sensitivity: -110dBm
• Voltage - Supply: 3.3V, 5V
• Current - Transmitting: 650mA
• Data Interface: Connector, 2 x 10 Header
• Antenna Connector: MMCX
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Wireless Frequency: 900 MHz
• Interface Type: 20-pin mini connector
• Modulation: FHSS, FSK
• Security: 1 byte System ID, DES
• Operating Voltage: 3.3 V to 5.5 V
• Output Power: 1000 mW
• Antenna: 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

A
Below is a simple switching power supply that provides enough current to easily power any Aerocomm OEM module.
It utilizes low cost, off the shelf components that fit into a small area. This supply has an input voltage range of +6
volts to +18 volts and will output +3.4 volts at 1.5 amps.
Included is a schematic, bill of materials with manufacture's name and part numbers and a sample PCB layout. It is
important to follow the layout suggestions and use large areas of copper to connect the devices as shown in the
layout. It is also important to hook up the ground traces as shown and use multiple vias to connect input and output
capacitors to the bottom side ground plane.
If the input voltage will be less than 12 volts then C1 and C2 can be replaced with a single 100uF 20 volt capacitor
(same part number as C7). This will reduce board space and lower costs further. If you are powering an AC5124
module, R1 can be changed to a 373 ohm 1% resistor. This will change the output to +5 volts at 1.0 amps.
B I L L O F M A T E R I A L S
PPENDIX
1
1
2
3
1
1
1
1
1
1
Qty
Reference
R1
R2
C1 C2
C3 C4 C5
C6
C7
D1
D2
L1
U1
I - S
T a b l e 1 9 : P o w e r S u p p l y B i l l o f M a t e r i a l s
AMPLE
210
127
47uF
0.1uF
3300pF
100uF
B230/A
LL4148
15uH
CS51413
Value
Res, 0603, 210, 1/16W, 1%
Res, 0603, 127, 1/16W, 1%
Cap, Tant, 7343, 47uF, 35V
Cap, Cer, 0603, 0.1uF, Y5V, 25V
Cap, Cer, 0603, 3300pF, X7R, 50V
Cap, Tant, 7343, 100uF, 20V
Diode, SMB, B230/A, 2A, Schott-
key
Diode, MELF, LL4148, Switch
Diode
Xfmr, 2P, SMT, 15uH, 2A
IC, CS51413, 8P, SO, Switch Reg
Ctrl.
www.aerocomm.com
P
OWER
Description
S
UPPLY
KOA
KOA
AVX
Murata
Murata
Kemet
Diodes, Inc.
Diodes, Inc.
Coiltronics
On-Semi-
cond.
Mfg.
RK73H1JT2100F
RK73H1JT1270F
TPSE476M035R0200
GRM39Y5V104Z025AD
GRM39X7R332K050AD
T491X107K020A5
B230/A
LL4148
UP2.8B150
CS51413
Mfg. part number
I