ATA2745M-TCQY Atmel, ATA2745M-TCQY Datasheet - Page 5

• Manufacturer Part Number: ATA2745M-TCQY
• Description: IC XMITTER ASK 433MHZ
• Manufacturer: Atmel

Specifications of ATA2745M-TCQY

• Frequency: 433MHz
• Applications: General Purpose
• Modulation Or Protocol: ASK
• Data Rate - Maximum: 20 kBaud
• Power - Output: 3dBm
• Current - Transmitting: 12.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 6V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -

5.1
Figure 5-2.
4898B–RKE–08/06
Output Power Measurement
Application Circuit
ASK
CLK
EN
3.39 MHz
The following output network
the exact values of L
L
following table shows the values for an output power of 2 mW and an R
Table 5-1.
Figure 5-1.
C
10
6
and C
C
5
R
f [MHz]
433.92
4
315
10
C
C
LFGND
2
1
LFVCC
form the transformation network to adopt the output impedance of the IC to 50 . The
GND
ASK
VCC
CLK
EN
Transformation Network
Measurement Output Network
LF
1
2
3
4
5
6
7
8
10
Power
ATA2745
OR
and C
up
C10 [pF]
10
(Figure 5-1 on page
2.7
1.8
VCO
are dependent on the layout.
PWRVCC
f
f
64
n
ANT
XTO
PA
16
15
14
13
12
11
10
9
GND
PWRSET
PWRVCC
ANT
PWRGND1
PWRGND2
XTO1
NC
50
V
L
+V
5) can be used for output power evaluation,
C
L10 [nH]
S
10
10
S
= 2.2 ... 4.0 V
56
33
Z
Load-opt
13.56 MHz
R
PWRSET
C
4
Antenna
C
L
C
Feed
3
Loop1
PWRSET
C
Loop2
Z
260 + j330
185 + j268
Load-opt
ATA2745
= 1.2 k .
[ ]
5