ATA5771 Datasheet, PDF (36/284 Pages) ATMEL Corporation – Microcontroller with UHF ASK/FSK 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
T_amb = –40°C to +85°C,
V_S = 3.0V
V_S = 2.0V
∆P_Ref
∆P_Ref
Output power variation for the full
temperature range
T_amb = –40°C to +125°C,
V_S = 3.0V
V_S = 2.0V,
P_Out = P_Ref + ∆P_Ref
∆P_Ref
∆P_Ref
Achievable output-power range Selectable by load impedance
P_{Out_typ}
0
Spurious emission
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
f_XTO = f₀/32
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
310
Voltage swing at pin CLK
C_Load ≤ 10 pF
Series resonance R of the crystal
V_0h
V_0l
V_S × 0.8
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.
–55
–52
f_XTAL
250
–116
–86
–94
–125
f₀/128
Max.
–1.5
–4.0
–2.0
–4.5
8.0
Unit
dB
dB
dB
dB
dBm
dBc
dBc
+30
ppm
+40
ppm
kHz
–110 dBc/Hz
–80
–90
–121
350
dBc/Hz
dBc/Hz
dBc/Hz
MHz
MHz
V_S × 0.2
V
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 T5753
4510I–RKE–02/07