XR18W753IL48-F Exar Corporation, XR18W753IL48-F Datasheet - Page 18
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XR18W753IL48-F
Manufacturer Part Number
XR18W753IL48-F
Description
IC RF TXRX 868-956MHZ 48QFN
Manufacturer
Exar Corporation
Type
RF Receiversr
Series
-r
Datasheet
1.XR18W753IL48-F.pdf
(27 pages)
Specifications of XR18W753IL48-F
Package / Case
48-VFQFN Exposed Pad
Frequency
868MHz ~ 954MHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
DSSS
Applications
ISM
Power - Output
0dBm
Sensitivity
-94dBm
Voltage - Supply
2.2 V ~ 3.6 V
Current - Receiving
19mA
Current - Transmitting
22mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Operating Frequency
100 KHz, 400 KHz
Operating Supply Voltage
2.2 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Noise Figure
12 dB
Supply Current
0.5 mA, 1.7 mA, 19 mA, 22 mA
Data Rate
250Kbps
Rf Ic Case Style
QFN
No. Of Pins
48
Supply Voltage Range
2.97V To 3.63V
Operating Temperature Range
-40°C To +85°C
Memory Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
XR18W753IL48-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
XR18W753
SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER
3.2 DETAILED REGISTERS DESCRIPTIONS
A
0x27
0x28
0x29
0x2A-0x2D
0x2E
0x2F - 0x30 RSSI_ACT_VALUE_0,1
0x31-0x4F
0x50
DDRESS
REGISTER NAME
AGC_ACT_VALUE
Reserved
SLICER_LEVEL
Reserved
ED_THRES
Reserved
TEST_0
AGC setting instantaneous value
DESCRIPTION
b[3:0] = 0000 --> IF-AGC set to 0dB
b[3:0] = 0001 --> IF-AGC set to -6dB
b[3:0] = 0010 --> IF-AGC set to -12dB
b[3:0] = 0011 --> IF-AGC set to -18dB
b[3:0] = 0100 --> IF-AGC set to -24dB
b[3:0] = 0101 --> IF-AGC set to -30dB
b[3:0] = 0110 --> IF-AGC set to -36dB
b[3:0] = 0111 --> IF-AGC set to -42dB
b[3:0] = 1000 --> IF-AGC set to -48dB
b[3:0] = 1001 --> not used
b[3:0] = 1010 --> not used
b[3:0] = 1011 --> not used
b[3:0] = 1100 --> not used
b[3:0] = 1101 --> not used
b[3:0] = 1110 --> not used
b[3:0] = 1111 --> not used
b[7:4] not used
Frequency offset in a link can be read out via this register. The
value is interpreted as an 8-bit two’s complement value (-128 to
+127). The conversion from this value to frequency is given below.
For 902 - 928 MHz application, the frequency offset is:
f
For 868 MHz application, the frequency offset is:
f
Energy detection threshold
In IEE802.15.4 specification, it has been defined how the result of
the ED measurement given in MODEM_ED (0x15) need to be
reported. The value of ED_THRES is used to align the receiver
with the IEE802.15.4 ED measurement specification.
Actual RSSI value_0, 1
The instantaneous level to the digital demodulator can be read via
these two registers. The value is interpreted as a two’s comple-
ment number. Together with the information of AGC_ACT_VALUE
(0x27), the instantaneous RF level can be calculated.
This register is used for factory test modes. For normal operation,
initialize this register to 0xD1.
offset
offset
= 1MHz x SLICER_LEVEL / 128
= 400 kHz x SLICER_LEVEL / 128
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REV. 1.0.0
T
R/W
R/W
YPE
R
R
R
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