T5744N-TKQ Atmel, T5744N-TKQ Datasheet - Page 5

• Manufacturer Part Number: T5744N-TKQ
• Description: IC RCVR PLL ASK 450MHZ 20-SSOP
• Manufacturer: Atmel

Specifications of T5744N-TKQ

• Frequency: 300MHz ~ 450MHz
• Sensitivity: -108dBm
• Modulation Or Protocol: ASK
• Applications: General Purpose Data Transmission Systems
• Current - Receiving: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -
• Data Rate - Maximum: -
• Other names: T5744N-TKQTR

Table 1. Calculation of LO and IF Frequency
Figure 5. Input Matching Network with SAW Filter
4521B–RKE–01/03
Conditions
f
f
300 MHz < f
365 MHz < f
RF
RF
= 315 MHz, MODE = 0
= 433.92 MHz, MODE = 1
RF
f
RF
IN
= 433.92 MHz
RF
RF
8.2p
< 365 MHz, MODE = 0
< 450 MHz, MODE = 1
C2
22p
C3
TOKO LL2012
F33NJ
33n
L2
L
25n
1
2
IN
IN_GND
Figure 5 shows a typical input matching network for f
433.92 MHz using a SAW. Figure 6 illustrates the input matching to 50 W without a
SAW. The input matching networks shown in Figure 6 are the reference networks for the
parameters given in the electrical characteristics.
8
9
C16
100p
CASE_GND
LNAGND
LNA_IN
B3555
3,4 7,8
T5744
27n
L3
Local Oscillator Frequency
f
f
LO
LO
f
f
LO
LO
OUT_GND
= 314 MHz
= 432.92 MHz
TOKO LL2012
F27NJ
=
=
C17
8.2p
OUT
--------------------------- -
1
-------------------
1
+
+
f
RF
----------------- -
432.92
f
5
6
--------- -
314
RF
1
1
RF
IN
f
RF
= 315 MHz
10p
C2
47p
C3
TOKO LL2012
F82NJ
82n
L2
Intermediate Frequency
f
f
IF
IF
L
25n
1
2
= 1 MHz
= 1 MHz
f
IF
f
IF
IN
IN_GND
=
=
----------------- -
432.92
--------- -
314
8
9
f
f
C16
100p
LO
LO
CASE_GND
LNAGND
LNA_IN
RF
B3551
3,4 7,8
T5744
47n
L3
= 315 MHz and f
OUT_GND
TOKO LL2012
F47NJ
C17
22p
OUT
T5744
5
6
RF
=
5