RFHCS362G_11 Datasheet, PDF (47/54 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder with UHF ASK/FSK Transmitter

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
Typ^†
Max
Units
Conditions
VDDRF
Supply Voltage
2.2
—
5.5
V
IPDRF
Power-Down Current
—
0.05
0.1
μA
IDDRF
Supply Current
4.8
—
11.5
mA
VILRF
Input Low Voltage
-0.3
—
0.3 VSSRF
V
VIHRF
Input High Voltage 0.7 VSSRF —
VSSRF + 0.3
V
IILRF
Input Leakage Current
-1
—
1
μA
RFEN = 0
Note 1
Note 2
Note 2
*
†
Note 1:
Note 2:
These parameters are characterized but not tested.
Data in “Typ” 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
Typ^†
Max
Units
Conditions
bit *
†
Note 1:
Note 2:
Note 3:
f_xtal
Crystal Frequency
9.69
—
15
MHz
f_transmit
Transmit Frequency
310
—
440
MHz
fCLKOUT CLKOUT Frequency
2.42
—
3.75
MHz
P_o
Transmit Output Power -12
—
+2
dBm
fASK
ASK Data Rate
—
—
40
kbps
Fixed, set by f_xtal
Fixed, set by f_xtal
See Table 6-6
fFSK
FSK Data Rate
—
—
20
kbps
Note 3
PREF
Reference Spurs ⁽¹⁾
—
-44
—
dBm
PCLK
Clock Spurs ⁽¹⁾
—
-44
—
dBm
f_transmit ± f_xtal
f_transmit ± f_CLKOUT
PHARM
Harmonic Content
—
-40
—
dBm
2f_transmit, 3f_transmit,
4f_transmit,...
POFF Spurious Output Signal
—
-60
—
dBm
Vps ≤0.1V
PN
KVCO
Phase Noise
VCO Gain
—
-87
—
dBc/Hz
f_transmit ± 500 kHz
—
100
—
MHz/V
ICP
Charge Pump Current
—
±260
—
μA
VCLKOUT Clock Voltage Swing
—
2
—
VPP
t_on
Start-up Time
—
0.9
—
ms
C_load = 5 pF
Note 2
These parameters are characterized but not tested.
Data in “Typ” 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.
t_on equals crystal oscillator and PLL start-up time.
Max FSK data rate requires crystal with appropriate motional parameters. See Section 6.3.
© 2011 Microchip Technology Inc.
DS41189B-page 47