The TRF1223 is a highly integrated linear transmitter/power amplifier (PA) MMIC. The chip has two 16db gain steps that provide a total of 32 db gain control via a 1-bit TTL control signal. The chip also integrates TTL mute functionality to turn off amplifiers for power-critical or TDD applications. Temperature compensation detectors include output power monitors or ALC applications.
Detailed Block Diagram of TRF1223
Features
1 W P-1dB Linear, 30-dB Gain Transmitter
• Operates Over the 3300-MHz to 3800-MHz Range
• Two TTL Controlled, 1-Bit, 16-dB Gain Steps for 32 dB of Total Gain Control
• Superior Linearity (+45 dBm IP3) Over the Entire Frequency Range
• Auto-Bias Design With PA Enable
• Temperature Compensated Directional Coupler Detector
• Low Power Bias Mode
• Internally Matched 50-Ω Input and Output
Recommended TRF1223 Application Schematic
The chip has a P1dB of +30 dBm and a third-order intercept of +45 dBm. The TRF1223 is part of Texas Instruments' 3.5ghz chipset. TRF1223 is an output power amplifier or driver amplifier for higher power applications. The linear nature of the transmitter makes it ideal for complex modulation schemes, such as high-order QAM or OFDM.
