SX1233IMLTRT Semtech, SX1233IMLTRT Datasheet - Page 22

• Manufacturer Part Number: SX1233IMLTRT
• Description: RF Transceiver Extended Bands Japan-Korea
• Manufacturer: Semtech

Specifications of SX1233IMLTRT

• Transmitting Current: 95mA
• Data Rate: 600Kbps
• Rf Ic Case Style: QFN
• No. Of Pins: 24
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Receiving Current: 17mA

Notes - To ensure correct operation at the highest power levels, please make sure to adjust the Over Current Protection
3.4.7. Over Current Protection
An over current protection block is built-in the chip. It helps preventing surge currents required when the transmitter is used
at its highest power levels, thus protecting the battery that may power the application. The current clamping value is
controlled by OcpTrim bits in RegOcp, and is calculated with the following formula:
Note
Rev 5 - June 2011
ADVANCED COMMUNICATIONS & SENSING
Limit accordingly in RegOcp.
- If PA_BOOST pin is not used (+13dBm applications and less), the pin can be left floating.
- With PA1 and PA2 enabled, 16dB of output power dynamic are available.
Imax sets the maximum current drawn by the final PA stage, and does not account for the PA drivers and
frequency synthesizer. Global current drain on Vbat will be higher.
-10
-14
-18
-22
18
14
10
-2
-6
6
2
-18
-14
Imax
Figure 6. Output Power Curves
=
-10
45
+
Pout vs. Programmed Power
5 OcpTrim
-6
×
Program m ed Pow er [dBm ]
Page 22
-2
(
mA
2
)
6
Pout on PA0 [dBm]
Pout on PA1 [dBm]
Pout on PA1+PA2 [dBm]
10
14
DATASHEET
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SX1233