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RFHCS362F Datasheet, PDF (50/60 Pages) Microchip Technology – Code Hopping Encoder with UHF ASK/FSK Transmitter | |||
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rfHCS362G/362F
TABLE 10-6: TRANSMITTER DC CHARACTERISTICS*
DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ⤠TA ⤠+85°C
Param
No.
Sym
Characteristic
Min
Typâ
Max
Units
Conditions
VDDRF
Supply Voltage
2.2
â
5.5
V
IPDRF
Power-Down Current
â
0.05
0.1
µA
IDDRF
Supply Current
4.8
â
11.5
mA
VILRF
Input Low Voltage
-0.3
â
0.3 VSSRF
V
VIHRF
Input High Voltage 0.7 VSSRF â
VSSRF + 0.3
V
IILRF Input Leakage Current
-1
â
1
µA
RFEN = 0
Note 1
Note 2
Note 2
*
â
Note 1:
Note 2:
These parameters are characterized but not tested.
Data in âTypâ column is at 3V, 25°C unless otherwise stated. These parameters are for design guidance only
and are not tested.
Depends on output power selection. See Table 6-6.
Applies to RFEN pin.
TABLE 10-7: TRANSMITTER AC CHARACTERISTICS*
AC CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ⤠TA ⤠+85°C
Param
No.
Sym
Characteristic
Min
Typâ
Max
Units
Conditions
bit *
â
Note 1:
Note 2:
Note 3:
fxtal
Crystal Frequency
9.69
â
15
MHz
ftransmit
Transmit Frequency
310
â
440
MHz
fCLKOUT CLKOUT Frequency
2.42
â
3.75
MHz
Po
Transmit Output Power -12
â
+2
dBm
fASK
ASK Data Rate
â
â
40
kbps
Fixed, set by fxtal
Fixed, set by fxtal
See Table 6-6
fFSK
FSK Data Rate
â
â
20
kbps
Note 3
PREF
Reference Spurs (1)
â
-44
â
dBm
PCLK
Clock Spurs (1)
â
-44
â
dBm
ftransmit ± fxtal
ftransmit ± fCLKOUT
PHARM
Harmonic Content
â
-40
â
dBm
2ftransmit, 3ftransmit,
4ftransmit,...
POFF Spurious Output Signal
â
-60
â
dBm
Vps ⤠0.1V
PN
KVCO
Phase Noise
VCO Gain
â
-87
â
dBc/Hz
ftransmit ± 500 kHz
â
100
â
MHz/V
ICP
Charge Pump Current
â
±260
â
µA
VCLKOUT Clock Voltage Swing
â
2
â
VPP
ton
Start-up Time
â
0.9
â
ms
Cload = 5 pF
Note 2
These parameters are characterized but not tested.
Data in âTypâ column is at 3V, 25°C unless otherwise stated. These parameters are for design guidance only
and are not tested.
Values dependent on PLL loop filter values.
ton equals crystal oscillator and PLL start-up time.
Max FSK data rate requires crystal with appropriate motional parameters. See Section 6.3.
DS41189A-page 50
Preliminary
© 2002 Microchip Technology Inc.
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