Atmel ATA3741 Series, Operating

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27
4899B–RKE–10/06
ATA3741
Input sensitivity ASK 600-kHz IF filter BR_Range0 –108 –110 –112 dBm
Input sensitivity ASK 600-kHz IF filter BR_Range1 –106.5 –108.5 –110.5 dBm
Input sensitivity ASK 600-kHz IF filter BR_Range2 –106 –108 –110 dBm
Input sensitivity ASK 600-kHz IF filter BR_Range3 –104 –106 –108 dBm
Sensitivity variation ASK for the full
operating range compared to
T
amb
= 25°C, V
S
= 5V
300-kHz and 600-kHz version
f
in
= 433.92 MHz/315 MHz
f
IF
= 1 MHz
P
ASK
= P
Ref_ASK
+
∆
P
Ref
∆
P
Ref
+2.5 –1.5 dB
Sensitivity variation ASK for full
operating range including IF filter
compared to T
amb
= 25°C, V
S
= 5V
300-kHz version
f
in
= 433.92 MHz/315 MHz
f
IF
= 0.88 MHz to 1.12 MHz
f
IF
= 0.85 MHz to 1.15 MHz
P
ASK
= P
Ref_ASK
+
∆
P
Ref
∆
P
Ref
+5.5
+7.5 –1.5
–1.5 dB
dB
Sensitivity variation ASK for full
operating range including IF filter
compared to T
amb
= 25°C, V
S
= 5V
600-kHz version
f
in
= 433.92 MHz/315 MHz
f
IF
= 0.79 MHz to 1.21 MHz
f
IF
= 0.73 MHz to 1.27 MHz
P
ASK
= P
Ref_ASK
+
∆
P
Ref
∆
P
Ref
+5.5
+7.5 –1.5
–1.5 dB
dB
Input sensitivity FSK 600-kHz IF filter
Input matched according to Figure
3-3 ,
BER
≤
10
–3
, B = 600 kHz
f
in
= 433.92 MHz/315 MHz
T = 25°C, V
S
= 5V
f
IF
= 1 MHz
P
Ref_FSK
Input sensitivity FSK 600-kHz IF filter
BR_Range0
df
≥
±20 kHz
df
≥
±30 kHz
–95.5
–96.5 –97.5
–98.5 –99.5
–100.5
dBm
dBm
Input sensitivity FSK 600-kHz IF filter
BR_Range1
df
≥
±20 kHz
df
≥
±30 kHz
–94.5
–95.5 –96.5
–97.5 –98.5
–99.5 dBm
dBm
Sensitivity variation FSK for the full
operating range compared to
T
amb
= 25°C, V
S
= 5V
600-kHz version
f
in
= 433.92 MHz/315 MHz
f
IF
= 1 MHz
P
FSK
= P
Ref_FSK
+
∆
P
Ref
∆
P
Ref
+2.5 –1.5 dB
Sensitivity variation FSK for full
operating range including IF filter
compared to T
amb
= 25°C, V
S
= 5V
600-kHz version
f
in
= 433.92 MHz/315 MHz
f
IF
= 0.86 MHz to 1.14 MHz
f
IF
= 0.82 MHz to 1.18 MHz
P
FSK
= P
Ref_FSK
+
∆
P
Ref
∆
P
Ref
+5.5
+7.5 –1.5
–1.5 dB
dB
FSK frequency deviation
The sensitivity of the receiver is
higher for higher values of
∆
f
FSK
BR_Range0
BR_Range1
BR_Range2 and BR_Range3 are
not suitable for FSK operation
∆
f
FSK
20
20 30
30 50
50 kHz
kHz
SNR to suppress inband noise signals
ASK mode
FSK mode SNR
ASK
SNR
FSK
10
2
12
3
dB
dB
Dynamic range RSSI ampl.
∆
R
RSSI
60 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