U3741BM Datasheet, PDF (27/32 Pages) ATMEL Corporation – UHF ASK RECEIVER IC

U3741BM
Electrical Characteristics (Continued)
All parameters refer to GND, T_amb = -40°C to +105°C, V_S = 4.5 V to 5.5 V, f₀ = 433.92 MHz and f₀ = 315 MHz, unless otherwise specified.
(V_S = 5 V, T_amb = 25°C)
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Unit
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 = 5 V
Sensitivity variation ASK for full
operating range including IF filter
compared to T_amb = 25°C, V_S = 5 V
Sensitivity variation ASK for full
operating range including IF filter
compared to T_amb = 25°C, V_S = 5 V
Input sensitivity FSK 600 kHz IF filter
Input sensitivity FSK 600 kHz IF filter
300-kHz and 600-kHz version
f_in = 433.92 MHz/315 MHz
f_IF = 1 MHz
P_ASK = P_{Ref_ASK} + ∆P_Ref
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
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
Input matched according to Figure 4,
BER ≤10^-3, B = 600 kHz
f_in = 433.92 MHz/315 MHz
T = 25°C, V_S = 5 V
f_IF = 1 MHz
BR_Range0
df ≥ ±20 kHz
df ≥ ±30 kHz
∆P_Ref
∆P_Ref
∆P_Ref
P_{Ref_FSK}
+2.5
+5.5
+7.5
+5.5
+7.5
-95.5
-96.5
-1.5
dB
-1.5
dB
-1.5
dB
-1.5
dB
-1.5
dB
-97.5
-98.5
-99.5
-100.5
dBm
dBm
BR_Range1
Input sensitivity FSK 600 kHz IF filter 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 = 5 V
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
600-kHz version
Sensitivity variation FSK for full
operating range including IF filter
compared to T_amb = 25°C, V_S = 5 V
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
dB
-1.5
dB
The sensitivity of the receiver is higher
FSK frequency deviation
for higher values of ∆f_FSK
BR_Range0
BR_Range1
∆f_FSK
20
20
30
30
50
kHz
50
kHz
BR_Range2 and BR_Range3 are not
suitable for FSK operation
S/N ratio to suppress inband noise
signals
Dynamic range RSSI ampl.
ASK mode
FSK mode
SNR_ASK
10
SNR_FSK
2
12
dB
3
dB
∆R_RSSI
60
dB
27
4662B–RKE–10/04