U3742BM Datasheet, PDF (25/32 Pages) ATMEL Corporation – UHF ASK/FSK RECEIVER

U3742BM
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 other-
wise specified. (V_S = 5 V, T_amb = 25°C)
6.76438 Mhz Oscillator
(Mode 1)
4.90625 Mhz Oscillator
(Mode 0)
Variable Oscillator
Parameter Test Condition
Symbol Min.
Typ. Max. Min. Typ.
Max. Min.
Typ.
Max. Unit
Basic Clock Cycle of the Digital Circuitry
Basic clock
cycle
Extended
basic clock
cycle
MODE = 0 (USA)
MODE = 1 (Europe)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T_Clk
T_XClk
2.0697
16.6
8.3
4.1
2.1
2.0383
16.3
8.2
4.1
2.0
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
Polling Mode
Sleep time
Sleep and XSleep
are defined in the
OPMODE register
Start-up time
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T_Sleep
T_Startup
Sleep ´
X_Sleep ´
1024 ´
2.0697
1855
1061
1061
663
Sleep ´
X_Sleep ´
1024 ´
2.0383
1827
1045
1045
653
Sleep ´
X_Sleep ´
1024 ´
ms
T_Clk
896.5
µs
512.5
µs
512.5
µs
320.5
µs
´ T_Clk
Time for Bit
Check
Average bit check
time while polling
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T_Bitcheck
Bit check time for a
valid input signal f_Sig
N_Bitcheck = 0
N_Bitcheck = 3
N_Bitcheck = 6
N_Bitcheck = 9
T_Bitcheck
3/f_Sig
6/f_Sig
9/f_Sig
0.45
0.47
0.24
0.26
0.14
0.16
0.14
0.15
3.5/f_Sig
6.5/f_Sig
9.5/f_Sig
3/f_Sig
6/f_Sig
9/f_Sig
3.5/f_Sig
6.5/f_Sig
9.5/f_Sig
T_XClk
3/f_Sig
6/f_Sig
9/f_Sig
ms
ms
ms
ms
T_XClk
ms
3.5/f_Sig ms
6.5/f_{Sig ms}
9.5/f_{Sig ms}
Receiving Mode
Intermediate
frequency
MODE=0 (USA)
MODE=1 (Europe)
f_IF
Baud rate
range
BR_Range0
BR_Range1
BR_Range2
BR_Range3
1.0
BR_Range
1.8
3.2
5.6
Minimum time
period
between
edges at
pin DATA
(Figure 19 on
page 17)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T_{DATA_min}
tmin1
tmin2
tmin1
tmin2
tmin1
tmin2
tmin1
tmin2
1.0
1.0
1.8 1.0
1.8
3.2 1.8
3.2
5.6 3.2
5.6
10.0 5.6
10.0
149
147
182
179
75
73
91
90
37.3
36.7
45.5
44.8
18.6
18.3
22.8
22.4
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
9 ´ T_XClk
11 ´ T_XCl
9 ´ T_XClk
11 ´ T_XClk
9 ´ T_XClk
11 ´ T_XClk
9 ´ T_XClk
11 ´ T_XClk
MHz
MHz
kBaud
kBaud
kBaud
kBaud
µs
µs
µs
µs
µs
µs
µs
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4735A–RKE–11/03