SX1230I066TRT Semtech, SX1230I066TRT Datasheet - Page 31

• Manufacturer Part Number: SX1230I066TRT
• Description: IC TX UHF 433/868/916 MHZ 24-QFN
• Manufacturer: Semtech

Specifications of SX1230I066TRT

• Frequency: 315MHz, 434MHz, 868MHz, 915MHz
• Applications: RKE
• Modulation Or Protocol: ISM
• Data Rate - Maximum: 600kbps
• Power - Output: 17dBm
• Current - Transmitting: 95mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 1.8 V ~ 3.7 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-MLPQ
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4mm
• Product Length (mm): 4mm
• Operating Supply Voltage (min): 1.8V
• Operating Supply Voltage (typ): 2.5/3.3V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: Q4629601; SX1230I066TR; SX1230I066TRT

7.6. Operation with 17 dBm Output Power
With both power amplifiers enabled the SX1230 can generate a 17 dBm (50 mW) output. Starting with the default power
amplifier configuration, the register changes necessary to avail of the full output power are:
The ideal matching network for full regulatory compliance with FCC Part 15 for 915 MHz operation is shown in Figure 15
where, in addition to matching, is an additional discrete notch filter for harmonic rejection.
Figures 9 and 10 show the circuit diagrams of the 434 MHz ETSI and 315 MHz FCC compliant matching schemes.
Although the full power may not necessarily be availed of in these bands, 17 dBm operation can permit the use of lower
gain, electrically small antennas.
SX1230, Revision 2 May 2009
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Figure 15. Single 17 dBm Matching Circuit for both 902-928 MHz (FCC) and 868 MHz (ETSI) Compliance
The over current protection limiter (OCP) through which the PA is biased must be increased to 100 mA.
Both PA1 and PA 2 must be enabled.
A programmed power output (pow_val) must be set to 13 dBm.
VR_PA
RFOUT
Figure 16. Output Matching for 17 dBm Output Power in the 434 MHz Band
VR_PA
RFOUT
1.5 nH
6.2 nH
33 nH
15 pF
33 pF
12 nH
6.8 pF
33 pF
3.3 pF
10 nH
Page 31
0.68 pF
10 nH
3.3 pF
15 pF
18 nH
2.7 pF
Integrated Transmitter IC
17 dBm
10 pF
www.semtech.com
DATASHEET
17 dBm
SX1230