U3741BM Datasheet, PDF (18/25 Pages) ATMEL Corporation – UHF ASK RECEIVER IC

U3741BM
Absolute Maximum Ratings
Parameters
Power dissipation
Junction temperature
Storage temperature
Ambient temperature
W Maximum input level, input matched to 50
Symbol Min.
Typ.
Max.
Unit
P_tot
T_j
T_stg
–55
T_amb
–40
P_{in_max}
450
mW
150
°C
+125
°C
+105
°C
10
dBm
Thermal Resistance
Junction ambient
Parameters
Symbol
R_thJA
Value
100
Unit
K/W
Electrical Characteristics
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)
Parameter
Test Condition
Symbol
Basic clock cycle of the digital circuitry
Basic clock MODE = 0 (USA)
T_Clk
cycle
MODE = 1 (Europe)
Extended
basic clock
cycle
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T_XClk
Polling mode
Sleep time
Sleep and XSleep
are defined in the
OPMODE register
T_Sleep
Startup time
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T_Startup
6.76438 MHz Osc.
(MODE: 1)
Min. Typ. Max.
4.90625 MHz Osc.
(MODE: 0)
Min. Typ. Max.
2.0697
16.6
8.3
4.1
2.1
2.0383
16.3
8.2
4.1
2.0
Sleep ×
X_Sleep ×
1024 ×
2.0697
1855
1061
1061
663
Sleep ×
X_Sleep ×
1024 ×
2.0383
1827
1045
1045
653
Time for
Bitcheck
Average bitcheck
time while polling
T_Bitcheck
BR_Range0
0.45
0.47
BR_Range1
0.24
0.26
BR_Range2
0.14
0.16
BR_Range3
0.14
0.15
Bitcheck time for a
valid input signal
f_Sig
N_Bitcheck = 0
N_Bitcheck = 3
N_Bitcheck = 6
N_Bitcheck = 9
T_Bitcheck
0
3/f_Sig
6/f_Sig
9/f_Sig
0.166
3.5/f_Sig
6.5/f_Sig
9.5/f_Sig
0
3/f_Sig
6/f_Sig
9/f_Sig
0.164
3.5/f_Sig
6.5/f_Sig
9.5/f_Sig
Receiving mode
Intermediate
f_IF
frequency MODE=0 (USA)
1.0
MODE=1 (Europe)
1.0
Baud rate BR_Range0
BR_Range 1.0
1.8
1.0
1.8
range
BR_Range1
1.8
3.2
1.8
3.2
BR_Range2
3.2
5.6
3.2
5.6
BR_Range3
5.6
10.0 5.6
10.0
Variable Oscillator
Unit
Min.
Typ.
Max.
1/f_XTO/10
µs
1/f_XTO/14
µs
8 × T_Clk
µs
4 × T_Clk
µs
2 × T_Clk
µs
1 × T_Clk
µs
Sleep ×
ms
X_Sleep ×
1024 ×
T_Clk
896.5
µs
512.5
µs
512.5
µs
320.5
µs
× T_Clk
µs
ms
ms
ms
ms
8 × T_Clk
ms
3.5/f_Sig
ms
6.5/f_Sig
ms
9.5/f_Sig
ms
f_XTO × 64 / 314
f_XTO × 64 / 432.92
BR_Range0 × 2 µs / T_Clk
BR_Range1 × 2 µs / T_Clk
BR_Range2 × 2 µs / T_Clk
BR_Range3 × 2 µs / T_Clk
MHz
MHz
kBaud
kBaud
kBaud
kBaud
18 (25)
Preliminary Information
Rev. A1, 15-Oct-98