ASK Datasheet, PDF (10/13 Pages) ATMEL Corporation – Transmitter

7. Electrical Characteristics (Continued)
V_S = 2.0V to 4.0V, T_amb = –40°C to 125°C unless otherwise specified.
Typical values are given at V_S = 3.0V and T_amb = 25°C. All parameters are referred to GND (pin 7).
Parameters
Test Conditions
Symbol
Min.
Output power variation for the full
temperature range
Output power variation for the full
temperature range
Achievable output-power range
Spurious emission
T_amb = –40°C to +85°C,
V_S = 3.0V
V_S = 2.0V
T_amb = –40°C to +125°C,
V_S = 3.0V
V_S = 2.0V,
P_Out = P_Ref + ΔP_Ref
Selectable by load impedance
f_CLK = f₀/128
Load capacitance at pin CLK = 10 pF
f_O ±1 × f_CLK
f_O ±4 × f_CLK
other spurious are lower
ΔP_Ref
ΔP_Ref
ΔP_Ref
ΔP_Ref
P_{Out_typ}
–3
f_XTO = f₀/64
f_XTAL = resonant frequency of the XTAL,
Oscillator frequency XTO
C_M ≤ 10 fF, load capacitance selected
(= phase comparator frequency) accordingly
f_XTO
T_amb = –40°C to +85°C,
–30
T_amb = –40°C to +125°C
–40
PLL loop bandwidth
Phase noise of phase comparator
Referred to f_PC = f_XT0,
25 kHz distance to carrier
In loop phase noise PLL
25 kHz distance to carrier
Phase noise VCO
at 1 MHz
at 36 MHz
Frequency range of VCO
Clock output frequency (CMOS
microcontroller compatible)
f_VCO
868
Voltage swing at pin CLK
C_Load ≤ 10 pF
Series resonance R of the crystal
V_0h
V_S × 0.8
V_0l
Rs
Capacitive load at pin XT0
FSK modulation frequency rate Duty cycle of the modulation signal = 50%
0
ASK modulation frequency rate Duty cycle of the modulation signal = 50%
0
ENABLE input
Low level input voltage
High level input voltage
Input current high
V_Il
V_Ih
1.7
I_In
PA_ENABLE input
Low level input voltage
High level input voltage
Input current high
V_Il
V_Ih
1.7
I_In
Note: 1. If V_S is higher than 3.6V, the maximum voltage will be reduced to 3.6V.
Typ.
–52
–52
f_XTAL
250
–116
–80
–89
–120
f₀/256
Max.
–1.5
–4.0
–2.0
–4.5
+5.5
Unit
dB
dB
dB
dB
dBm
dBc
dBc
+30
ppm
+40
ppm
kHz
–110 dBc/Hz
–74
–86
–117
928
dBc/Hz
dBc/Hz
dBc/Hz
MHz
MHz
V
V_S × 0.2
V
110
Ω
7
pF
32
kHz
32
kHz
0.25
V
V
20
µA
0.25
V
V_S(1)
V
5
µA
10 T5750
4546F–RKE–12/08