Micrel MICRF505BML/YML
August 2006 6
M9999-092904
+1 408-944-0800
Absolute Maximum Ratings
(1)
Supply Voltage (V
DD
).........................................+2.7V
Voltage on any pin (GND = 0V). ..... -0.3V to 2.7V
Supply Voltage V
DD
in…………………………..0 to 6V
Storage Temperature (T
s
) ................-55°C to +150°C
ESD Rating
(3)
........................................................ 2kV
Operating Ratings
(2)
Supply voltage (V
DD
In)………..…….+2.25V to +5.5V
RF Frequencies.......................... 850MHz to 950MHz
Data Rate ................................................<200kBaud
Ambient Temperature (T
A
) ................ –40°C to +85°C
Package Thermal Resistance
MLF
TM
(θ
JA
) ...........................................41.7°C/W
Electrical Characteristics
(4)
f
RF
= 915MHz. Data-rate = 125kbps, Modulation type = closed-loop VCO modulation, V
DD
= 2.5V; T
A
= 25°C, bold
values indicate –40°C<
T
A
< +85°C, unless noted.
Symbol Parameter Condition Min Typ Max Units
RF Frequency Operating
Range
850
950
MHz
Power Supply
2.25
5.5
V
Power Down Current 0.3
2
µA
Standby Current 370
µA
Low Voltage Dropout regulator
Output Voltage 2.5
V
Turn-On Time 30
µS
VCO and PLL Section
Reference Frequency
4 40
MHz
915MHz to 915.5MHz 0.5
ms PLL Lock Time
(5)
3kHz bandwidth
902MHz to 927MHz 1.7
ms
PLL Lock Time
(5)
20kHz bandwidth
915MHz to 915.5MHz 0.3 ms
Rx – Tx 0.6
ms
Tx – Rx 0.6
ms
Standby Rx 1.1
ms
Switch Time
(5)
3kHz loop bandwidth
Standby Tx 1.2 ms
Crystal Oscillator Start-Up
Time
16MHz, 9pF load, 5.6pF loading
capacitors
1.2 ms
VCP
OUT
= 1.1V, CP_HI = 0
125
µA
Charge Pump Current
VCP
OUT
= 1.1V, CP_HI = 1
500
µA
Transmit Section
R
LOAD
= 50Ω, Pa2-0-111
10 dBm
Output Power
R
LOAD
= 50Ω, Pa2-0-001
-8 dBm
Over temperature range 2 dB
Output Power Tolerance
Over power supply range 3 dB
R
LOAD
= 50Ω, Pa2-0-111
28 mA
Tx Current Consumption
R
LOAD
= 50Ω, Pa2-0-001
14 mA
Binary FSK Frequency
Separation
(5)
Birate = 200kbps
20 500
kHz
VCO modulation
20 200
kbps
Data Rate
(5)
Divider modulation
20
kbps
38.4kbps, β = 2, 20dBc
kHz Occupied bandwidth
(5)
125kbps, β = 2, 20dBc
kHz
