u3741bm ATMEL Corporation, u3741bm Datasheet - Page 27

• Manufacturer Part Number: u3741bm
• Description: Uhf Ask Receiver Ic
• Manufacturer: ATMEL Corporation

Electrical Characteristics (Continued)
All parameters refer to GND, T
(V
4662B–RKE–10/04
Parameters
Input sensitivity ASK 600 kHz IF filter
Input sensitivity ASK 600 kHz IF filter
Input sensitivity ASK 600 kHz IF filter
Input sensitivity ASK 600 kHz IF filter
Sensitivity variation ASK for the full
operating range compared to
T
Sensitivity variation ASK for full
operating range including IF filter
compared to T
Sensitivity variation ASK for full
operating range including IF filter
compared to T
Input sensitivity FSK 600 kHz IF filter
Input sensitivity FSK 600 kHz IF filter
Input sensitivity FSK 600 kHz IF filter
Sensitivity variation FSK for the full
operating range compared to
T
Sensitivity variation FSK for full
operating range including IF filter
compared to T
FSK frequency deviation
S/N ratio to suppress inband noise
signals
Dynamic range RSSI ampl.
amb
amb
S
= 5 V, T
= 25°C, V
= 25°C, V
amb
amb
amb
S
amb
S
= 25°C)
= 5 V
= 5 V
= 25°C, V
= 25°C, V
= 25°C, V
S
S
S
= 5 V
= 5 V
= 5 V
amb
= -40°C to +105°C, V
Test Conditions
BR_Range0
BR_Range1
BR_Range2
BR_Range3
300-kHz and 600-kHz version
f
f
P
300-kHz version
f
f
f
P
600-kHz version
f
f
f
P
Input matched according to Figure 4,
BER ≤ 10
f
T = 25°C, V
f
BR_Range0
df ≥ ±20 kHz
df ≥ ±30 kHz
BR_Range1
df ≥ ±20 kHz
df ≥ ±30 kHz
600-kHz version
f
f
P
600-kHz version
f
f
f
P
The sensitivity of the receiver is higher
for higher values of ∆f
BR_Range0
BR_Range1
BR_Range2 and BR_Range3 are not
suitable for FSK operation
ASK mode
FSK mode
in
IF
in
IF
IF
in
IF
IF
in
IF
in
IF
in
IF
IF
ASK
ASK
ASK
FSK
FSK
= 433.92 MHz/315 MHz
= 433.92 MHz/315 MHz
= 433.92 MHz/315 MHz
= 433.92 MHz/315 MHz
= 433.92 MHz/315 MHz
= 433.92 MHz/315 MHz
= 1 MHz
= 0.88 MHz to 1.12 MHz
= 0.85 MHz to 1.15 MHz
= 0.79 MHz to 1.21 MHz
= 0.73 MHz to 1.27 MHz
= 1 MHz
= 1 MHz
= 0.86 MHz to 1.14 MHz
= 0.82 MHz to 1.18 MHz
= P
= P
= P
= P
= P
Ref_ASK
Ref_ASK
Ref_ASK
Ref_FSK
Ref_FSK
-3
, B = 600 kHz
S
= 5 V
S
+ ∆P
+ ∆P
+ ∆P
+ ∆P
+ ∆P
= 4.5 V to 5.5 V, f
Ref
Ref
Ref
Ref
Ref
FSK
0
= 433.92 MHz and f
Symbol
P
SNR
SNR
∆R
∆P
∆P
∆P
∆P
∆P
Ref_FSK
∆f
FSK
RSSI
Ref
Ref
Ref
Ref
Ref
ASK
FSK
0
-106.5
-95.5
-96.5
-94.5
-95.5
= 315 MHz, unless otherwise specified.
Min.
-108
-106
-104
+2.5
+5.5
+7.5
+5.5
+7.5
+2.5
+5.5
+7.5
20
20
10
2
-108.5
-97.5
-98.5
-96.5
-97.5
Typ.
-110
-108
-106
30
30
60
U3741BM
-110.5
-100.5
Max.
-99.5
-98.5
-99.5
-112
-110
-108
-1.5
-1.5
-1.5
-1.5
-1.5
-1.5
-1.5
-1.5
50
50
12
3
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
Unit
kHz
kHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
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