IA4420 Datasheet, PDF (9/29 Pages) List of Unclassifed Manufacturers – Universal ISM Band FSK Transceiver

IA4420
AC Characteristics (Transmitter)
Symbol
I_OUT
P_max
P_out
P_sp
C_o
Q_o
L_out
BR
df_fsk
Parameter
Open collector output DC current
Available output power with optimal
antenna impedance
(Note 3, 4)
Typical output power
Spurious emission
Output capacitance
(set by the automatic antenna tuning
circuit)
Quality factor of the output
capacitance
Output phase noise
FSK bit rate
FSK frequency deviation
Conditions/Notes
Programmable
In low bands
In high bands
Selectable in 3 dB steps (Note 5)
At max power with loop antenna
(Note 6)
In low bands
In high bands
In low bands
In high bands
100 kHz from carrier
1 MHz from carrier
Programmable in 15 kHz steps
Min Typ
0.5
8
4
P_max-21
2
2.6
2.1
2.7
13
15
8
10
-75
-85
15
Max Units
6
mA
dBm
P_max
-50
dBm
dBc
3.2
pF
3.3
17
12
dBc/Hz
256 kbps
240 kHz
AC Characteristics (Turn-on/Turnaround timings)
Symbol
t_sx
Parameter
Crystal oscillator startup time
Conditions/Notes
Crystal ESR < 100
Min Typ Max Units
5
ms
T_{tx_rx_XTAL_ON}
Transmitter - Receiver turnover time
Synthesizer off, crystal oscillator on during
TX/RX change with 10 MHz step
450
us
T_{rx_tx_XTAL_ON}
Receiver - Transmitter turnover time
Synthesizer off, crystal oscillator on during
RX/TX change with 10 MHz step
350
us
T_{tx_rx_SYNT_ON}
Transmitter - Receiver turnover time
Synthesizer and crystal oscillator on
during TX/RX change with 10 MHz step
425
us
T_{rx_tx_SYNT_ON}
Receiver - Transmitter turnover time
Synthesizer and crystal oscillator on
during RX/TX change with 10 MHz step
300
us
AC Characteristics (Others)
Symbol
C_xl
t_POR
t_PBt
C_{in, D}
t_{r, f}
Parameter
Crystal load capacitance,
see crystal selection guide
Internal POR timeout
Wake-up timer clock period
Digital input capacitance
Digital output rise/fall time
All notes for tables above are on page 10.
Conditions/Notes
Min Typ Max Units
Programmable in 0.5 pF steps, tolerance
+/- 10%
8.5
16
pF
After V_dd has reached 90% of final value
(Note 7)
100
ms
Calibrated every 30 seconds
0.95
1.05 ms
2
pF
15 pF pure capacitive load
10
ns
9