MICRF405YML TR Micrel Inc, MICRF405YML TR Datasheet - Page 26

868-915 MHz ISM Band Transmitter

MICRF405YML TR

Manufacturer Part Number
MICRF405YML TR
Description
868-915 MHz ISM Band Transmitter
Manufacturer
Micrel Inc
Datasheet

Specifications of MICRF405YML TR

Frequency
290MHz ~ 980MHz
Applications
ISM
Modulation Or Protocol
ASK, FSK
Data Rate - Maximum
200 kbps
Power - Output
10dBm
Current - Transmitting
18mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
2.2 V ~ 3.6 V
Operating Temperature
-40°C ~ 125°C
Package / Case
24-MLF®, QFN
Operating Temperature (min)
-40C
Operating Temperature (max)
125C
Operating Temperature Classification
Automotive
Product Depth (mm)
4mm
Product Length (mm)
4mm
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Memory Size
-
Lead Free Status / Rohs Status
Compliant
Other names
576-1965-2
MICRF405YMLTR
MICRF405YMLTR
April 2006
The design of the PLL filter will strongly affect the
performance of the frequency synthesizer. Input
parameters, when designing the loop filter for the
MICRF405, are mainly the modulation method and
the bit rate. Internal loop filter, which have relative
Modulation
Open loop
Open loop
>9.6kbps
≤4.8kbps
≤9.6kbps
VCO
VCO
type
ASK
ASK
ASK
Fphd
[kHz]
1000
1000
2000
2000
500
[kHz]
22.5
BW
220
45
32
64
3.125/31.25
3.125/31.25
6.25/62.5
6.25/62.5
12.5/125
[uA]
CP
Table 18. Internal Dual Path Filter Settings.
CP_CUR
1
2
1
2
3
32.4
32.4
32.4
32.4
[pF]
5.4
C1
26
high bandwidths, is recommended for ASK. The
external filter must be used when the bandwidth
must be low. These choices will also affect the
switching time and phase noise.
[pF]
10.8
10.8
10.8
10.8
1.8
C2
LF_CAP
3
3
3
3
0
[kΩ]
R1
96
48
68
34
76
LF_RES1
7
2
4
1
5
[kΩ]
R3
57
28
40
20
5
(408) 955-1690
M9999-041906
LF_RES3
8
3
5
2
0

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