The ADRF6702 provides a quadrature modulator and synthesizer solution within a small 6 mm × 6 mm footprint while requiring minimal external components.The ADRF6702 is designed for RF outputs from 1200 MHz to 2400 MHz. The low phase noise VCO and high performance quadrature modulator make the ADRF6702 suitable for next generation communication systems requiring high signal dynamic range and linearity. The integration of the IQ modulator, PLL, and VCO provides for significant board savings and reduces the BOM and design complexity.The integrated fractional-N PLL/synthesizer generates a 2× fLO input to the IQ modulator. The phase detector together with an external loop filter is used to control the VCO output. The VCO output is applied to a quadrature divider. To reduce spurious components, a sigma-delta (Σ-Δ) modulator controls the programmable PLL divider.The IQ modulator has wideband differential I and Q inputs, which support baseband as well as complex IF architectures. The single-ended modulator output is designed to drive a 50 Ω load impedance and can be disabled.The ADRF6702 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, exposed-paddle, Pb-free, 6 mm × 6 mm LFCSP package. Performance is specified from −40°C to +85°C. A lead-free evaluation board is available.APPLICATIONS Cellular communications systems        GSM/EDGE, CDMA2000, W-CDMA, TD-SCDMA, LTE Broadband wireless access systems Satellite modems

RF Amplifier LNA w/Failsafe Bypass , 700-1200 MHz

DC391A-A: Demo Board for LTC5505 RF Power Detector with Buffered Output and >40dB Dynamic Range.

The LT5506 is a 40MHz to 500MHz monolithic integrated quadrature demodulator with variable gain amplifier (VGA), designed for low voltage operation. It supports standards that use a linear modulation format. The chip consists of a VGA, quadrature down-converting mixers and lowpass noise filters. The LO port consists of a divide-by-two stage and LO buffers. The IC provides all building blocks for IF down-conversion to I and Q baseband signals with a single supply voltage of 1.8V to 5.25V. The VGA gain has a linear-in- dB relationship to the control input voltage. Hard-clipping amplifiers at the mixer outputs reduce the recovery time from a signal overload condition. The lowpass filters reduce the out-of-band noise and spurious frequency components. The cut-off frequency of the noise filters is approximately 8.8MHz. The external 2xLO frequency is required to be twice the IF input frequency for the mixers. The standby mode provides reduced supply current and fast transient response into the normal operating mode when the I/Q outputs are AC-coupled to a baseband chip.Applications IEEE802.11 High Speed Wireless LAN Wireless Local Loop

The LTC5507 is an RF power detector for applications operating from 100kHz to 1000MHz. The input frequency range is determined by an external capacitor. A temperature-compensated Schottky diode peak detector and buffer amplifier are combined in a small 6-pin ThinSOT package.The RF input voltage is peak detected using an on-chip Schottky diode and external capacitor. The detected voltage is buffered and supplied to the VOUT pin. A power saving shutdown mode reduces supply current to less than 2?A.Applications Wireless Transceivers Wireless and Cable Infrastructure RF Power Alarm Envelope Detector

The LTC5532 is an RF power detector for RF applications operating in the 300MHz to 7GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small ThinSOT? or (2mm x 2mm) DFN package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3x NiMH.The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the VOUT pin.The LTC5532 output buffer gain is set via external resistors. The initial starting voltage of 120mV ?35mV can be precisely adjusted using the VOS pin.The LTC5532 operates with RF input power levels from ?32dBm to 10dBmApplications 802.11a, 802.11b, 802.11g, 802.15 Multimode Mobile Phone Products Optical Data Links Wireless Data Modems Wireless and Cable Infrastructure RF Power Alarm Envelope Detector

The LT5528 is a direct I/Q modulator designed for high performance wireless applications, including wireless infrastructure. It allows direct modulation of an RF signal using differential baseband I and Q signals. It supports PHS, GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, W-CDMA and other systems. It may also be con? gured as an image reject up-converting mixer, by applying 90? phase-shifted signals to the I and Q inputs. The I/Q baseband inputs consist of voltage-to-current converters that in turn drive double-balanced mixers. The outputs of these mixers are summed and applied to an on-chip RF transformer, which converts the differential mixer signals to a 50? single-ended output. The four balanced I and Q baseband input ports are intended for DC coupling from a? source with a common-mode voltage level of about 0.5V. The LO path consists of an LO buffer with single-ended input, and precision quadrature generators that produce the LO drive for the mixers. The supply voltage range is 4.5V to 5.25V.Applications Infrastructure Tx for DCS, PCS and UMTS Bands Image Reject Up-Converters for PCS and UMTS Bands Low-Noise Variable Phase-Shifter for 1.5GHz to 2.4GHz Local Oscillator Signals

DC748A: Demo Board for the High Accuracy 3GHz Log RF Detector Has 60dB Dynamic Range.

DC792A: Demo Board for the LT5525 High Linearity, Low Power Downconverting Mixer.

The HMC8100LP6JE is a highly integrated IF receiver chip that converts radio frequency (RF) input signals ranging from 800 MHz to 4000 MHz down to a single ended intermediate frequency (IF) signal of 140 MHz at its output. The IF receiver chip is housed in a compact 6 mm x 6 mm LFCSP package and supports complex modulations up to 1024 QAM. The HMC8100LP6JE device includes two VGAs, three power detectors, a programmable AGC block, and selected integrated bandpass filters with 14 MHz, 28 MHz, 56 MHz, and 112 MHz bandwidth. The HMC8100LP6JE also supports baseband IQ interfaces after the mixer so that the chips can be used in the full ODU configuration.The HMC8100LP6JE supports all of the standard microwave frequency bands from 6 to 42 GHz.Applications Point to point communications Satellite communications Wireless microwave backhaul systemsPlease also view complimentary product HMC8200, Intermediate Frequency Transmitter 800 MHz - 4000 MHz.