T5744 ATMEL [ATMEL Corporation], T5744 Datasheet - Page 13

• Manufacturer Part Number: T5744
• Description: UHF ASK Receiver
• Manufacturer: ATMEL [ATMEL Corporation]

Electrical Characteristics (continued)
4521B–RKE–01/03
Parameters
Maximum input level
Local Oscillator
Operating frequency range
VCO
Phase noise VCO / LO
Spurious of the VCO
VCO gain
Loop bandwidth of the PLL
Capacitive load at Pin LF
XTO operating frequency
Series resonance resistor of
the crystal
Static capacitance of the
crystal
Analog Signal Processing
Input sensitivity
Sensitivity variation for the
full operating range
compared to
T
Sensitivity variation for full
operating range including IF
filter compared to
T
S/N ratio to suppress inband
noise signals
amb
amb
= 25°C, V
= 25
°
C, V
S
S
= 5 V
= 5 V
Test Conditions
Input matched according to
Figure 6, BER £ 10
f
at 1 MHz
at 10 MHz
at ± f
For best LO noise
(design parameter)
R1 = 820 W
C9 = 4.7 nF
C10 = 1 nF
XTO crystal frequency,
appropriate load capacitance
must be connected to XTAL
f
f
f
4.906 MHz
Input matched according to
Figure 6
ASK (level of carrier)
BER £ 10
f
T = 25°C, V
BR_Range0 (1 kBd)
BR_Range1 (2 kBd)
BR_Range2 (4kBd)
BR_Range3 (8 kBd)
f
f
P
f
f
f
P
osc
XTAL
XTAL
XTO
in
in
IF
in
IF
IF
ASK
ASK
= 433.92 MHz/ 315 MHz
= 433.92 MHz/ 315 MHz
= 433.92 MHz/ 315 MHz
= 1 MHz
= 0.79 MHz to 1.21 MHz
= 0.73 MHz to 1.27 MHz
= 432.92 MHz
= 6.764 MHz
= 6.764375 MHz (EU)
= 4.90625 MHz (US)
XTO
= P
= P
Ref_ASK
Ref_ASK
-3
(Manchester),
S
= 5 V, f
+ DP
+ DP
-3
IF
Ref
Ref
= 1 MHz
Symbol
P
P
L (fm)
C
D P
D P
K
B
Ref_ASK
SNR
f
f
in_max
VCO
LF_tot
R
XTO
C
Loop
VCO
S
Ref
Ref
o
6.764375
-30 ppm
4.90625
-30 ppm
Min.
-107
-105
-103
-101
+2.5
+5.5
+7.5
299
6.764375
4.90625
Typ.
-113
-110
-108
-106
-104
190
100
-93
-55
10
6.764375
+30 ppm
+30 ppm
4.90625
Max.
-110
-112
-110
-108
-106
449
150
220
-1.5
-1.5
-1.5
-20
-90
-47
6.5
10
12
T5744
dBC/Hz
dBC/Hz
MHz/V
dBm
MHz
MHz
MHz
dBm
dBm
dBm
dBm
Unit
dBC
kHz
nF
pF
dB
dB
dB
dB
W
W
13