MRF89XAT-I/MQ Microchip Technology, MRF89XAT-I/MQ Datasheet - Page 100
MRF89XAT-I/MQ
Manufacturer Part Number
MRF89XAT-I/MQ
Description
RF ISM BAND TXRX 32 QFN
Manufacturer
Microchip Technology
Series
-r
Datasheet
1.MRF89XA-IMQ.pdf
(142 pages)
Specifications of MRF89XAT-I/MQ
Frequency
863MHz ~ 870MHz, 902MHz ~ 928MHz, 950MHz ~ 960MHz
Data Rate - Maximum
200 kbps
Modulation Or Protocol
FSK, OOK
Applications
ISM
Power - Output
12.5dBm
Sensitivity
-113dBm
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
3mA
Current - Transmitting
25mA
Data Interface
PCB, Surface Mount
Memory Size
*
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Rf Ic Case Style
QFN
No. Of Pins
32
Svhc
No SVHC (20-Jun-2011)
Rohs Compliant
Yes
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
MRF89XAT-I/MQTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MRF89XAT-I/MQ
Manufacturer:
MICROCHIP
Quantity:
12 000
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4.4
The Power Amplifier (PA) integrated in the MRF89XA
operates under a regulated voltage supply of 1.8V. The
external RF choke inductor is biased by an internal reg-
ulator output made available on the PARS pin (pin 29).
These features help PA output power to be consistent
over the power supply range. This is important for
applications that allow predictable RF performance and
battery life.
FIGURE 4-4:
DS70622B-page 100
MRF89XA
Note:
POWER AMPLIFIER
Refer to Section 4.7 “Bill of Materials”
for an optimized PA load setting.
OPTIMAL LOAD IMPEDANCE CHART
Preliminary
4.4.1
As the PA and the LNA front-ends in the MRF89XA
share the same input/output pin, they are internally
matched to approximately 50Ω. Figure 4-4illustrates
optimum load impedance of RFIO through an imped-
ance chart.
Max Power
Zopt = 30 + j25Ω
OPTIMUM LOAD IMPEDANCE
Pmax-1dB circle
© 2010 Microchip Technology Inc.
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