UHF ASK/FSK Receiver ATA3745 - Atmel Corporation
UHF ASK/FSK Receiver ATA3745 - Atmel Corporation
UHF ASK/FSK Receiver ATA3745 - Atmel Corporation
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9. Electrical Characteristics<br />
All parameters refer to GND, V S = 5V, T amb = 25°C, f 0 = 433.92 MHz and f 0 = 315 MHz, unless otherwise specified. The possible operating<br />
range refer to different circuit conditions: V S = 4.5V to 5.5V, T amb = –40°C to +85°C<br />
Parameter Test Condition Symbol<br />
Basic Clock Cycle of the Digital Circuitry<br />
Basic clock<br />
cycle<br />
Extended<br />
basic clock<br />
cycle<br />
Polling Mode<br />
Sleep time<br />
Start-up time<br />
Time for Bit<br />
check<br />
Receiving Mode<br />
Intermediate<br />
frequency<br />
Baud rate<br />
range<br />
MODE = 0 (USA)<br />
MODE = 1 (Europe)<br />
BR_Range0<br />
BR_Range1<br />
BR_Range2<br />
BR_Range3<br />
Sleep and X Sleep are<br />
defined in the<br />
OPMODE register<br />
BR_Range0<br />
BR_Range1<br />
BR_Range2<br />
BR_Range3<br />
Average bit check<br />
time while polling<br />
BR_Range0<br />
BR_Range1<br />
BR_Range2<br />
BR_Range3<br />
Bit check time for a<br />
valid input signal f Sig<br />
N Bitcheck = 0<br />
N Bitcheck = 3<br />
N Bitcheck = 6<br />
N Bitcheck = 9<br />
MODE = 0 (USA)<br />
MODE = 1 (Europe)<br />
BR_Range0<br />
BR_Range1<br />
BR_Range2<br />
BR_Range3<br />
6.76438-Mhz Oscillator<br />
(Mode 1)<br />
4.90625-Mhz Oscillator<br />
(Mode 0)<br />
Variable Oscillator<br />
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.<br />
T Clk 2.0697<br />
2.0383 1 / (f XTO /10)<br />
1/(f XTO /14)<br />
16.6<br />
8.3<br />
T XClk<br />
4.1<br />
2.1<br />
T Sleep<br />
Sleep <br />
X Sleep <br />
1024 <br />
2.0697<br />
1855<br />
1061<br />
T Startup 1061<br />
663<br />
T Bitcheck<br />
0.45<br />
0.24<br />
0.14<br />
0.14<br />
T Bitcheck<br />
16.3<br />
8.2<br />
4.1<br />
2.0<br />
Sleep <br />
X Sleep <br />
1024 <br />
2.0383<br />
1827<br />
1045<br />
1045<br />
653<br />
0.47<br />
0.26<br />
0.16<br />
0.15<br />
Unit<br />
µs<br />
µs<br />
8 T Clk<br />
µs<br />
4 T Clk<br />
µs<br />
2 T Clk<br />
µs<br />
1 T Clk µs<br />
Sleep <br />
X Sleep <br />
1024 <br />
T Clk<br />
ms<br />
896.5<br />
µs<br />
512.5<br />
µs<br />
512.5<br />
µs<br />
320.5<br />
µs<br />
T Clk<br />
T XClk<br />
9/f Sig 9.5 / f Sig 9/f Sig 9.5 / f Sig 9.5 / f Sig ms<br />
3/fSig<br />
6/f Sig<br />
3.5 / f Sig<br />
6.5 / f Sig<br />
3/f Sig<br />
6/f Sig<br />
3.5 / f Sig<br />
6.5 / f Sig<br />
3.5 / fSig<br />
6.5 / f Sig<br />
ms<br />
ms<br />
ms<br />
f IF 1.0<br />
1.0 f XTO 64 / 314<br />
f XTO 64 / 432.92<br />
BR_Range<br />
1.0<br />
1.8<br />
3.2<br />
5.6<br />
1.8<br />
3.2<br />
5.6<br />
10.0<br />
1.0<br />
1.8<br />
3.2<br />
5.6<br />
1.8<br />
3.2<br />
5.6<br />
10.0<br />
BR_Range0 2 ms / T Clk<br />
BR_Range1 2 ms / T Clk<br />
BR_Range2 2 ms / T Clk<br />
BR_Range3 2 ms / T Clk<br />
ms<br />
ms<br />
ms<br />
ms<br />
MHz<br />
MHz<br />
kBaud<br />
kBaud<br />
kBaud<br />
kBaud<br />
Minimum time<br />
period<br />
between<br />
edges at<br />
pin DATA<br />
(Figure 5-9 on<br />
page 16)<br />
BR_Range0<br />
BR_Range1<br />
BR_Range2<br />
BR_Range3<br />
T DATA_min<br />
tmin1<br />
tmin2<br />
tmin1<br />
tmin2<br />
tmin1<br />
tmin2<br />
tmin1<br />
tmin2<br />
149<br />
182<br />
75<br />
91<br />
37.3<br />
45.5<br />
18.6<br />
22.8<br />
147<br />
179<br />
73<br />
90<br />
36.7<br />
44.8<br />
18.3<br />
22.4<br />
9 T XClk<br />
µs<br />
11 T XCl<br />
µs<br />
9 T XClk<br />
µs<br />
11 T XClk<br />
µs<br />
9 T XClk<br />
µs<br />
11 T XClk<br />
µs<br />
9 T XClk<br />
µs<br />
11 T XClk µs<br />
Maximum low<br />
period at<br />
DATA<br />
(Figure 5-10<br />
on page 16)<br />
BR_Range0<br />
BR_Range1<br />
BR_Range2<br />
BR_Range3<br />
T DATA_L_max<br />
2169<br />
1085<br />
542<br />
271<br />
2136<br />
1068<br />
534<br />
267<br />
131 T XClk<br />
µs<br />
131 T XClk<br />
µs<br />
131 T XClk<br />
µs<br />
131 T XClk µs<br />
26<br />
<strong>ATA3745</strong><br />
4901B–RKE–11/07
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