MRF49XA-I/ST Microchip Technology, MRF49XA-I/ST Datasheet - Page 26

• Manufacturer Part Number: MRF49XA-I/ST
• Description: IC RF TXRX 433/868/915 16-TSSOP
• Manufacturer: Microchip Technology

Specifications of MRF49XA-I/ST

• Package / Case: 16-TSSOP
• Frequency: 433MHz, 868MHz, 915MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: FHSS, FSK
• Applications: Home / Industrial Automation, Remote Access, Security Alarms
• Power - Output: 7dbm
• Sensitivity: -110dBm
• Voltage - Supply: 2.2 V ~ 3.8 V
• Current - Receiving: 11mA
• Current - Transmitting: 15mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 1
• Number Of Transmitters: 2
• Wireless Frequency: 433 MHz to 915 MHz
• Output Power: + 7 dBm
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Modulation: FHSS, FSK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 579-MRF49XA-1/ST

REGISTER 2-4:
EQUATION 2-1:
DS70590B-page 24
MRF49XA
bit 2-0
Note 1:
f
where:
f
MB is the 4-Bit Binary Number (MODBW<3:0>)
SIGN = MODPLY
FSKOUT
0
is the Channel Center Frequency (see Register 2-6 for f
2:
= f
The transmitter FSK modulation parameters are used for calculating the resulting output frequency, as
shown in Equation 2-1.
The output transmit power range is relative to the maximum available power, which depends on the actual
antenna impedance.
0
+ (– 1)SIGN x (MB + 1) x (15 kHz)
OTXPWR<2:0>: Output Transmit Power Range bits
These bits set the transmit output power range. The output power is programmable from 0 dB (Max.)
to -17.5 dB in -2.5 dB steps.
111 = -17.5 dB
110 = -15.0 dB
101 = -12.5 dB
100 = -10.5 dB
011 = -7.5 dB
010 = -5.0 dB
001 = -2.5 dB
000 = 0 dB
XOR
TXCREG: TRANSMIT CONFIGURATION REGISTER (POR: 0x9800) (CONTINUED)
FSK
Preliminary
0
Calculation)
(2)
© 2009 Microchip Technology Inc.