TRF1223
www.ti.com
SLWS166C–APRIL 2005–REVISED MARCH 2007
3.3-GHz To 3.8-GHz 1-W Power Amplifier
FEATURES
VPOS
VNEG
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1 W P-1dB Linear, 30-dB Gain Transmitter
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Operates Over the 3300-MHz to 3800-MHz
Range
Power
Supply
VDD
PACNT
LP
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Two TTL Controlled, 1-Bit, 16-dB Gain Steps
for 32 dB of Total Gain Control
Power Amp /
Attenuator
Driver
Amplifier
Pre-Amp
Superior Linearity (+45 dBm IP3) Over the
Entire Frequency Range
RFI
RFO
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Auto-Bias Design With PA Enable
Temperature Compensated Directional
Coupler Detector
DETN
DETP
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Low Power Bias Mode
Internally Matched 50-Ω Input and Output
PAGAIN1
PAGAIN0
DESCRIPTION
The TRF1223 is a highly integrated linear transmitter / power amplifier (PA) MMIC. The chip has two 16-dB gain
steps that provide a total of 32-dB gain control via 1-bit TTL control signals. The chip also integrates a TTL mute
function that turns off the amplifiers for power critical or TDD applications. A temperature compensated detector
is included for output power monitor or ALC applications. The chip has a P1dB of +30 dBm and a third order
intercept of +45 dBm.
The TRF1223 is designed to function as a part of Texas Instruments complete 3.5-GHz chip set. The TRF1223
is the output power amplifier or a 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
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•
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OP1dB = +30 dBm
Output IP3 = +45 dBm, Typical
Gain = 30 dB, Typical
Gain Flatness over Transmit Band ±2 dB
Frequency Range = 3300 MHz to 3800 MHz
±0.5-dB 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 © 2005–2007, 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.