Texas Instruments TRF1223 Data Sheet

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TRF1223

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SLWS166A–APRIL 2005–REVISED JULY

3.3-GHz TO 3.8-GHZ 1-W Power Amplifier

FEATURES

VPOS VNEG

P-1d B Linear, 30-d B Gain Transmitter Operates Over the 3300-MHz to 3800-MHz

Power

Range

PACNT

Supply VDD

Two TTL Controlled, 1-bit, 16-d B Gain Steps LP

for d B of Total Gain Control

Power Amp / Driver

Pre-Amp

Superior Linearity (+45 d Bm IP3) Over the Attenuator Amplifier

Entire Frequency Range RFO RFI Auto-Bias Design With PA Enable Temperature Compensated Directional Coupler Detector DETN

Low Power Bias Mode Internally Matched 50-Ω Input and Output

PAGAIN1 PAGAIN0

DESCRIPTION The TRF1223 is highly integrated linear transmitter power amplifier (PA) MMIC. The chip has two 16-d B gain steps that provide total of 32-d B gain control via 1-bit TTL control signals. The chip also integrates TTL mute function that turns off the amplifiers for power critical or TDD applications. temperature compensated detector is included for output power monitor or ALC applications. The chip has P1d B of +30 d Bm and third order intercept of +45 d Bm. The TRF1223 is designed to function as part of Texas Instruments complete 3.5-GHz chip set. The TRF1223 is the output power amplifier or driver amplifier for higher power applications. The linear nature of the transmitter makes it ideal for complex modulations schemes such as high order QAM or OFDM.

KEY SPECIFICATIONS OP1d B +30 d Bm Output IP3 +45 d Bm, Typical Gain d B, Typical Gain Flatness over Transmit Band ±2 d B Frequency Range MHz to MHz ±0.5-d B Detected Output Voltage vs Temperature

BLOCK DIAGRAM The detailed block diagram and the pin-out of the ASIC are shown in Figure 1.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date. Copyright 2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.