MRF89XAT-I/MQ Microchip Technology, MRF89XAT-I/MQ Datasheet - Page 101
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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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4.4.2
The recommended PA bias and matching circuit is
illustrated in Figure 4-5.
FIGURE 4-5:
Refer to Section 4.7 “Bill of Materials” for the opti-
mized matching arrangement for each frequency band.
4.4.3
The Receiver and Transmitter share the same RFIO
pin (pin 31). Figure 4-6 illustrates the configuration of
the common RF front-end.
In Transmit mode, the PA and PA regulator are active,
with the voltage on the PARS pin equal to the nominal
voltage of the regulator (1.8V). The external inductance
is used to bias the PA.
In Receive mode, both the PA and PA regulator are
OFF and PARS is tied to ground. The RF choke induc-
tor is then used to bias the LNA.
© 2010 Microchip Technology Inc.
SUGGESTED PA BIASING AND
MATCHING
COMMON INPUT AND OUTPUT
FRONT-END
RECOMMENDED PA BIASING AND OUTPUT MATCHING
PA
PARS
RFIO
100 nH
Low-pass and DC block
Preliminary
0.047 µF
1Ω 1%
FIGURE 4-6:
To
Antenna
SAW
PARS
RFIO
DC block
FRONT-END
DESCRIPTION
Antenna
RX ON
Regulator
MRF89XA
port
(1.8V)
PA
DS70622B-page 101
LNA
PA
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