TRF1222 Datasheet | Texas Instruments

FEATURES - Performs Up-Conversion in 3.5-GHz Radios (3300-3800 MHz) - Integrated IF amplifier, Mixer and LO Buffer Amplifier - Provision for external Image Reject / Band-Pass Filter - TTL Switched Attenuator For Gain Control - TTL Controlled Amplifier Power Down KEY SPECIFICATIONS - RF Frequency Range: 3300-3800 MHz - 18 d B of Gain with 16-d B Digital Attenuator - Output P-1d B: +14 d Bm, Typical - Output IP3: +24 d Bm, Typical - LO Drive Level = 0 d Bm, Typical DESCRIPTION The TRF1222 up-converts a UHF IF signal to an RF signal in the 3300 to 3800 MHz range for 3.5-GHz radio applications. The TRF1222 has 18 d B of gain and an output P-1d B of 14 d Bm, typical. A TTL patible, 1-bit 16-d B digital attenuator is provided for gain control and the IF and RF amplifiers can be shut off via a TTL control signal for power critical or TDD applications. In order to provide system requirements for LO/spurious rejection, the TRF1222 offers a signal path to an off-chip band-pass filter. Specifications are provided assuming an in-band 2-d B insertion loss filter. The TRF1222 is designed to plete the second up-conversion in Texas Instruments plete 3.5-GHz chip set. The linear nature of the up-converter makes it ideal for plex modulations schemes such as high order QAM or OFDM. RFI MXRO RF AMPLIFIER Mixer BALUN IFIP IFIN Power Supply LO Buffer LOP LON - VNEG VDD UCEN UCATTN Figure 1. Block Diagram 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 SLWS171A - APRIL 2005 - REVISED DECEMBER 2005 DEVICE...