Electrical characteristics (continued) – Rainbow Electronics T48C862-R8 User Manual
Page 12
12
T48C862-R8
4590B–4BMCU–02/03
Output power variation for the full
temperature range
T
amb
= -40°C to +125
°
C
V
S
= 3.0 V
V
S
= 2.0 V
P
Out
= P
Ref
+
D
P
Ref
D
P
Ref
D
P
Ref
-2.0
-4.5
dB
dB
Achievable output-power range
Selectable by load impedance
P
Out_typ
-3
+5.5
dBm
Spurious emission
f
CLK
= f
0
/128
Load capacitance at Pin CLK = 10 pF
f
O
±
1
´
f
CLK
f
O
± 4
´
f
CLK
other spurious are lower
-52
-52
dBc
dBc
Oscillator frequency XTO
(= phase comparator frequency)
f
XTO
= f
0
/32
f
XTAL
= resonant frequency of the
XTAL, C
M
£
10 fF, load capacitance
selected accordingly
T
amb
= -40°C to +85°C
T
amb
= -40°C to +125°C
f
XTO
-30
-40
f
XTAL
+30
+40
ppm
ppm
PLL loop bandwidth
250
kHz
Phase noise of phase
comparator
Referred to f
PC
= f
XT0,
25 kHz distance to carrier
-116
-110
dBc/Hz
In loop phase noise PLL
25 kHz distance to carrier
-80
-74
dBc/Hz
Phase noise VCO
at 1 MHz
at 36 MHz
-89
-120
-86
-117
dBc/Hz
dBc/Hz
Frequency range of VCO
f
VCO
868
928
MHz
Clock output frequency (CMOS
microcontroller compatible)
f
0
/256
MHz
Voltage swing at Pin CLK
C
Load
£
10 pF
V
0h
V
0l
V
S
´
0.8
V
S
´
0.2
V
V
Series resonance R of the crystal
Rs
110
W
Capaictive load at Pin XT0
7
pF
FSK modulation frequency rate
Duty cycle of the modulation signal =
50%
0
32
kHz
ASK modulation frequency rate
Duty cycle of the modulation signal =
50%
0
32
kHz
ENABLE input
Low level input voltage
High level input voltage
Input current high
V
Il
V
Ih
I
In
1.7
0.25
20
V
V
m
A
PA_ENABLE input
Low level input voltage
High level input voltage
Input current high
V
Il
V
Ih
I
In
1.7
0.25
5
V
V
m
A
Electrical Characteristics (Continued)
V
S
= 2.0 V to 4.0 V, T
amb
= -40°C to 125°C unless otherwise specified.
Typical values are given at V
S
= 3.0 V and T
amb
= 25°C. All parameters are refered to GND (Pin 7).
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Unit