Rainbow Electronics T5761 - Manual (Page 29)

29
T5760/T5761
4561B–RKE–10/02
Time for bit
check (see
Figure 11)
Bit-check time for
a valid input signal
f
Sig
(see Figure 12)
N
Bit-check
= 0
N
Bit-check
= 3
N
Bit-check
= 6
N
Bit-check
= 9
T
Bit-check
3/f
Sig
6/f
Sig
9/f
Sig
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
1 ´ T
XClk
3/f
Sig
6/f
Sig
9/f
Sig
1 ´ T
Clk
3.5/f
Sig
6.5/f
Sig
9.5/f
Sig
ms
ms
ms
ms
Receiving Mode
Intermediate
frequency
f
IF
0.95 1.00 f
RF
/915 MHz
Baud-rate
range
BR_Range0
BR_Range1
BR_Range2
BR_Range3
BR_Range
1.0
1.8
3.2
5.6
1.8
3.2
5.6
10.0
1.054
1.89
3.38
5.9
1.89
3.38
5.9
10.5
BR_Range0 ´ 2 µs/T
Clk
BR_Range1 ´ 2 µs/T
Clk
BR_Range2 ´ 2 µs/T
Clk
BR_Range3 ´ 2 µs/T
Clk
kBaud
kBaud
kBaud
kBaud
Minimum time
period
between edges
at Pin DATA
(see
Figure 18 and
Figure 19)
(With the
exception of
parameter
T
Pulse
)
BR_Range =
BR_Range0
BR_Range1
BR_Range2
BR_Range3 t
DATA_min
165.3
82.6
41.3
20.7
165.3
82.6
41.3
20.7
156.8
78.4
39.2
19.6
156.8
78.4
39.2
19.6
10 ´ T
XClk
10 ´ T
XClk
10 ´ T
XClk
10 ´ T
XClk
10 ´ T
XClk
10 ´ T
XClk
10 ´ T
XClk
10 ´ T
XClk
µs
µs
µs
µs
Maximum Low
period at Pin
DATA
(see
Figure 16)
BR_Range =
BR_Range0
BR_Range1
BR_Range2
BR_Range3
t
DATA_L_max
2149
1074
537
269
2149
1074
537
269
2139
1020
510
255
2139
1020
510
255
130 ´ T
XClk
130 ´ T
XClk
130 ´ T
XClk
130 ´ T
XClk
130 ´ T
XClk
130 ´ T
XClk
130 ´ T
XClk
130 ´ T
XClk
µs
µs
µs
µs
Delay to
activate the
start-up mode
(see
Figure 22)
Ton1 19.6 21.7 18.6 20.6 9.5 ´ T
Clk
10.5 ´ T
Clk
µs
OFF command
at Pin
POLLING/_ON
(see
Figure 21)
Ton2 16.5 15.6 8 ´ T
Clk
µs
Delay to
activate the
sleep mode
(see
Figure 21)
Ton3 17.6 19.6 16.6 18.6 8.5 ´ T
Clk
9.5 ´ T
Clk
µs
Pulse on Pin
DATA at the
end of a data
stream
(see
Figure 30)
BR_Range =
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T
Pulse
16.5
8.3
4.1
2.1
16.5
8.3
4.1
2.1
15.69
7.84
3.92
1.96
15.69
7.84
3.92
1.96
8 ´ T
Clk
4 ´ T
Clk
2 ´ T
Clk
1 ´ T
Clk
8 ´ T
Clk
4 ´ T
Clk
2 ´ T
Clk
1 ´ T
Clk
µs
µs
µs
µs
Electrical Characteristics (Continued)
All parameters refer to GND, T
am b
= -40
°
C to +105
°
C, V
S
= 4.5 V to 5.5 V, f
0
= 868.3 MHz and f
0
= 915 MHz,
unless otherwise specified. (For typical values: V
S
= 5 V, T
amb
= 25
°
C)
Parameter Test Conditions Symbol
f
RF
= 868.3 MHz
6.77617 MHz Oscillator
f
RF
= 915 MHz
7.14063 MHz Oscillator Variable Oscillator
Unit Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.