TRF1223 Datasheet, PDF (1/10 Pages) Texas Instruments – 3.3-GHz TO 3.8-GHZ 1-W Power Amplifier

TRF1223
www.ti.com
SLWS166A – APRIL 2005 – REVISED JULY 2005
3.3-GHz TO 3.8-GHZ 1-W Power Amplifier
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
VPOS
VNEG
VDD
RFO
Power
Supply
Power Amp /
Attenuator
Driver
Amplifier
Pre-Amp
PACNT
LP
RFI
DETN
DETP
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 P_1dB 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
• OP_1dB = +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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated