SX1230I066TRT Semtech, SX1230I066TRT Datasheet - Page 13

• 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

Table 7
5.2. Synthesizer
The frequency synthesizer of the SX1230 is a fully integrated fractional-N third-order sigma-delta phase-locked loop and
VCO. Also incorporated are fully integrated third-order and low pass filters which determine the loop bandwidth. All of these
features are fully automated and derived from the user bitrate and frequency deviation settings, as described in Sections
5.1.1 to 5.1.3.
To ensure the frequency accuracy of the PLL output it is necessary to perform calibration. The calibration process is
performed automatically upon power up of the SX1230. However, the calibration feature is also accessible to the user via
the SPI configuration register, PllStat (address 0x0A). The calibration is performed by setting bit 2 (pll_cal) high. This
ensures that the frequency output accuracy is limited only by the frequency error of the crystal oscillator, the calibration
procedure lasts 500 µs, during which time pll_cal_done (bit 4 of address 0x0A) is set low. Once complete pll_cal_done is
set high and confirmation of a successful calibration can be obtained by reading pll_cal_ok.
SX1230, Revision 2 May 2009
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Classical modem baud rates
(multiples of 1.2 kbps)
Classical modem baud rates
(multiples of 0.9 kbps)
Round bit rates
(multiples of 12.5, 25 and
50 kbps)
Watch Xtal frequency
Example Standard Bitrates and their Corresponding Register Settings.
Type
BrMSB
0x0D
0x1A
0x0A
0x03
0x68
0x34
0x06
0x03
0x01
0x00
0x02
0x01
0x05
0x80
0x01
0x00
0x00
0x00
0x00
BrLSB
0xD0
0x2C
0xD5
0xD1
0x2B
0x15
0x0B
0x05
0x83
0x41
0xA1
0x16
0x00
0x00
0x00
0x40
0xA0
0x80
0x6B
Page 13
(G)FSK, (G)MSK
32.768 kbps
153.6 kbps
115.2 kbps
19.2 kbps
38.4 kbps
76.8 kbps
57.6 kbps
12.5 kbps
100 kbps
150 kbps
200 kbps
250 kbps
300 kbps
1.2 kbps
2.4 kbps
4.8 kbps
9.6 kbps
25 kbps
50 kbps
32.768 kbps
19.2 kbps
12.5 kbps
1.2 kbps
2.4 kbps
4.8 kbps
9.6 kbps
25 kbps
OOK
Integrated Transmitter IC
Rb Actual (to 7s.f.)
www.semtech.com
DATASHEET
1200.015
2400.060
4799.760
9600.960
19196.16
38415.36
76738.60
153846.1
57553.95
115107.9
12500.00
25000.00
50000.00
100000.0
150234.7
200000.0
250000.0
299065.4
32753.32
SX1230