10
9140CINDCO02/10
ATA8741
5. Absolute Maximum Ratings
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters
Symbol
Minimum
Maximum
Unit
Supply voltage
V
S
5
V
Power dissipation
P
tot
100
mW
Junction temperature
T
j
150
癈
Storage temperature
T
stg
55
125
癈
Ambient temperature
T
amb
55
125
癈
Input voltage
V
maxPA_ENABLE
0.3
(V
S
+ 0.3)
(1)
V
Note:
1. If V
S
+ 0.3 is higher than 3.7V, the maximum voltage will be reduced to 3.7V.
6. Thermal Resistance
Parameters
Symbol
Value
Unit
Junction ambient
R
thJA
170
K/W
7. Electrical Characteristics
V
S
= 2.0V to 4.0V, T
amb
= 25癈 unless otherwise specified.
Typical values are given at V
S
= 3.0V and T
amb
= 25癈. All parameters are referred to GND (pin 7).
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Unit
Supply current
Power down, microcontroller Watchdog
timer disabled
I
S_Off
210
24.35
nA
礎
Supply current
Power up, 4 MHz internal RC oscillator
I
S_Transmit
9.8
mA
Output power
V
S
= 3.0V, T
amb
= 25癈,
f = 315 MHz, Z
Load
= (255 + j192)?/DIV>
P
Ref
6.0
8.0
10.5
dBm
Output power variation for the full
temperature range
T
amb
= 25癈,
V
S
= 3.0V
V
S
= 2.0V
擯
Ref
擯
Ref
1.5
4.0
dB
dB
Output power variation for the full
temperature range
T
amb
= 25癈,
V
S
= 3.0V
V
S
= 2.0V,
P
Out
= P
Ref
+ 擯
Ref
擯
Ref
擯
Ref
2.0
4.5
dB
dB
Achievable output-power range
Selectable by load impedance
P
Out_typ
0
8.0
dBm
Spurious emission
f
CLK
= f
0
/128
Load capacitance at pin CLK = 10 pF
f
O
? ?f
CLK
f
O
? ?f
CLK
other spurious are lower
55
52
dBc
dBc
Oscillator frequency XTO
(= phase comparator frequency)
f
XTO
= f
0
/32
f
XTAL
= resonant frequency of the XTAL,
C
M
d 10 fF, load capacitance selected
accordingly
T
amb
= 25癈
f
XTO
30
f
XTAL
+30
ppm
PLL loop bandwidth
250
kHz
Note:
1. If V
S
is higher than 3.6V, the maximum voltage will be reduced to 3.6V.
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