28
4899B–RKE–10/06
ATA3741
Lower cut-off frequency of the data
filter
f
cu_DF
0.11
0.16
0.20
kHz
Recommended CDEM for best
performance
ASK mode
BR_Range0 (Default)
BR_Range1
BR_Range2
BR_Range3
CDEM
39
22
12
8.2
nF
nF
nF
nF
Recommended CDEM for best
performance
FSK mode
BR_Range0 (Default)
BR_Range1
BR_Range2 and BR_Range3 are
not suitable for FSK operation
CDEM
27
15
nF
nF
Maximum edge-to-edge time period
of the input data signal for full
sensitivity
BR_Range0 (Default)
BR_Range1
BR_Range2
BR_Range3
t
ee_sig
1000
560
320
180
µs
µs
µs
µs
Upper cut-off frequency data filter
Upper cut-off frequency
programmable in 4 ranges
via a serial mode word
BR_Range0 (Default)
BR_Range1
BR_Range2
BR_Range3
f
u
2.5
4.3
7.6
13.6
3.1
5.4
9.5
17.0
3.7
6.5
11.4
20.4
kHz
kHz
kHz
kHz
Minimum edge-to-edge time period of
the input data signal for full sensitivity
BR_Range0 (Default)
BR_Range1
BR_Range2
BR_Range3
t
ee_sig
270
156
89
50
µs
µs
µs
µs
Reduced sensitivity
R
Sense
connected from pin SENS to
V
S
,
input matched according to
P
Ref_Red
dBm
(peak
level)
Reduced sensitivity
R
Sense
= 56 k
Ω
, f
in
= 433.92 MHz,
(V
S
= 5V, T
amb
= 25°C)
At B = 300 kHz
At B = 600 kHz
–71
–67
–76
–72
–81
–77
dBm
dBm
Reduced sensitivity
R
Sense
= 100 k
Ω
, f
in
= 433.92 MHz
At B = 300 kHz
At B = 600 kHz
–80
–76
–85
–81
–90
–86
dBm
dBm
Reduced sensitivity
R
Sense
= 56 k
Ω
, f
in
= 315 MHz
At B = 300 kHz
At B = 600 kHz
–72
–68
–77
–73
–82
–78
dBm
dBm
Reduced sensitivity
R
Sense
= 100 k
Ω
, f
in
= 315 MHz
At B = 300 kHz
At B = 600 kHz
–81
–77
–86
–82
–91
–87
dBm
dBm
Reduced sensitivity variation over full
operating range
R
Sense
= 56 k
Ω
R
Sense
= 100 k
Ω
P
Red
= P
Ref_Red
+ DP
Red
∆
P
Red
5
6
0
0
0
0
dB
dB
9.
Electrical Characteristics (Continued)
All parameters refer to GND, T
amb
= –40°C to +105°C, V
S
= 4.5V to 5.5V, f
0
= 433.92 MHz and f
0
= 315 MHz, unless otherwise specified.
(V
S
= 5V, T
amb
= 25°C)
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Unit
f
cu_DF
1
2
π
×
30 k
Ω
×
CDEM
×
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