ATA3741P2-TGQY Atmel, ATA3741P2-TGQY Datasheet - Page 6

• Manufacturer Part Number: ATA3741P2-TGQY
• Description: IC UHF ASK/FSK RECEIVER 20SOIC
• Manufacturer: Atmel

Specifications of ATA3741P2-TGQY

• Frequency: 300MHz ~ 450MHz
• Sensitivity: -108dBm
• Data Rate - Maximum: 10 kBaud
• Modulation Or Protocol: ASK, FSK
• Applications: RKE, TPM, Security Systems
• Current - Receiving: 7mA
• 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-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Other names: ATA3741P2-TGQYTR

Figure 3-2.
Figure 3-3.
6
RF
ATA3741
f
RF
IN
8.2 pF
RF
C2
IN
= 433.92 MHz
22p
C3
Input Matching Network With SAW Filter
Input Matching Network Without SAW Filter
f
RF
TOKO LL2012
= 433.92 MHz
F33NJ
3.3p
33n
L2
15p
22n
2
Please note that for all coupling conditions
of the LNA ground is compensated. C3 forms a series resonance circuit together with the bond
wire. L = 25 nH is a feed inductor to establish a DC path. Its value is not critical but must be large
enough not to detune the series resonance circuit. For cost reduction, this inductor can be easily
printed on the PCB. This configuration improves the sensitivity of the receiver by about 1 dB to
2 dB.
1
25n
L
TOKO LL2012
IN
IN_GND
100p
F22NJ
8
100p
25n
9
C16
CASE_GND
3, 4
B3555
ATA3741
LNA_IN
LNAGND
27n
L3
7, 8
8
9
OUT_GND
TOKO LL2012
ATA3741
LNA_IN
LNAGND
C17
27NJ
8.2p
OUT
6
5
RF
f
RF
IN
10 pF
C2
RF
= 315 MHz
(Figure 3-2
IN
47p
C3
f
TOKO LL2012
RF
F82NJ
= 315 MHz
82n
L2
3.3p
33p
39n
and
2
1
25n
L
Figure
TOKO LL2012
IN
IN_GND
100p
F39NJ
8
9
100p
C16
CASE_GND
25n
3-3), the bond wire inductivity
3, 4
B3551
ATA3741
LNA_IN
LNAGND
47n
L3
7, 8
8
9
OUT_GND
TOKO LL2012
F47NJ
ATA3741
LNA_IN
C17
LNAGND
22p
OUT
4899B–RKE–10/06
6
5