DC987B-A: Demo Board for the LTC6400-8 2.2GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz.

DC987B-H: Demo Board for the LTC6401-26 1.6GHz Low Noise, Low Distortion Differential ADC Driver for DC-140MHz.

The HMC1197 is a low noise, high linearity Direct Quadrature Modulator with Fractional-N PLL&VCO RFIC which is ideal for digital modulation applications from 0.1 to 4.0 GHz including; Cellular/3G, LTE/WiMAX/4G, Broadband Wireless Access & ISM circuits housed in a compact 7x7 mm (LP7) SMT QFN package, the HMC1197 RFIC requires minimal external components & provides a low cost alternative to more complicated double upconversion architectures. The RF output port is single-ended and matched to 50 Ohms with no external components.Auxiliary LO output (differential or single-ended), enables the HMC1197 to distribute identical frequency and phase signals to multiple destinations. Individual gain settings ensure optimal signal levels tailored to each output.External VCO input allows the HMC1197 to lock external VCOs, and enables cascaded LO architectures for MIMO radio applications. Two separate Charge Pump (CP) outputs enable separate loop filters optimized for both integrated and external VCOs, and seamless switching between integrated or external VCOs during operation. Programmable RF output phase feature can further phase adjust and synchronize multiple HMC1197s enabling scalable MIMO and beam-forming radio architectures.Integrated programmable Low Pass Filter (LPF) on the modulator LO input ensures no LO harmonic contribution to modulator sideband rejection performance. Sixteen programmable LPF bands enable true wideband operation, eliminating the need for external band specific harmonic filtering hardware.Additional features include configurable LO output mute function. Exact Frequency Mode that enables the HMC1197 to generate fractional frequencies with 0 Hz frequency error and the ability to synchronously change frequencies without changing the phase of the output signal. APPLICATIONS Multiband/Multi-standard Cellular BTS Diversity Transmitters Fixed Wireless or WLL ISM Transceivers, 900 & 2400 MHz GMSK, QPSK, QAM, SSB Modulators Multiband Basestations & Repeaters

The HMC1048ALC3B is a general-purpose, monolithic microwave integrated circuit (MMIC), double balanced mixer that can be used as a downconverter with dc to 4 GHz at the intermediate frequency (IF) port and 2.25 GHz to 18 GHz at the radio frequency (RF) port. The mixer requires no external components or matching circuitry.The HMC1048ALC3B provides excellent local oscillator (LO) to RF, LO to IF, and RF to IF isolation. The mixer operates with LO drive levels from 9 dBm to 17 dBm. The HMC1048ALC3B eliminates the need for wire bonding and allows the use of surface-mount manufacturing techniques.APPLICATIONS Ka band transponders Point to multipoint radios and very small aperture terminal (VSAT) Test equipment and sensors Military end use

The HMC220B is an ultraminiature, double-balanced mixer in an 8-lead mini small outline package with exposed pad (MINI_SO_EP). This fundamental, monolithic microwave integrated circuit (MMIC) mixer is constructed of gallium arsenide (GaAs) Schottky diodes and planar transformer baluns on the chip.The device can be used as an upconverter, downconverter, biphase demodulator, or phase comparator from 5 GHz to 12 GHz. The HMC220B provides excellent local oscillator (LO) to radio frequency (RF) and LO to intermediate frequency (IF) isolation due to optimized balun structures and operates as low as 7 dBm. The RoHS compliant HMC220B eliminates the need for wire bonding and is compatible with high volume surface-mount manufacturing techniques.Applications Very small aperture terminals (VSAT) and mobile satellite communication terminals Microwave and military radio Wireless backhaul equipment Automotive, dedicated short range communications (DSRC) and intelligent vehicle highway systems (IVHS) Military radar, electronic warfare (EW), and electronic counter measure (ECM) subsystems

HMC425ALP3E are broadband 6-bit GaAs IC digital attenuators in low cost leadless surfacemount packages. Covering 2.2 GHz to 8.0 GHz, the insertion loss is less than 4.5 dB typical. Theattenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuationaccuracy is excellent at ? 0.5 dB typical step error with an IIP3 of +40 dBm. Six control voltage inputs,toggled between 0 and +3 to +5V, are used to select each attenuation state. A single VDD bias of +3 to+5V is required.Applications WLAN & Point-to-Multi-Point Fiber Optics & Broadband Telecom Microwave Radio & VSAT Military

The HMC521ALC4 is a compact, gallium arsenide (GaAs), monolithic microwave integrated circuit (MMIC), inphase quadrature (I/Q) mixer in a RoHS compliant, 24-terminal ceramic leadless chip carrier (LCC) package. This device can be used as either an image reject mixer or a single sideband upconverter. The mixer uses two standard, double balanced mixer cells and a 90? hybrid coupler fabricated in a GaAs, metal?semiconductor field effect transistor (MESFET) process. This?device is a smaller alternative to hybrid style image reject?mixers and single sideband upconverter assemblies. The HMC521ALC4 eliminates the need for wire bonding, allowing?use of surface-mount manufacturing techniques.Applications Microwave and very small aperture terminal (VSAT) radios Test equipment Military electronic warfare (EW); electronic countermeasure (ECM); and command, control, communications, and intelligence (C3I)

The HMC629ALP4E is a broadband 4-bit GaAs ICDigital Attenuator in a low cost leadless SMT package.This versatile digital attenuator incorporates off-chipAC ground capacitors for near DC operation, makingit suitable for a wide variety of RF and IF applications.The dual mode control interface is CMOS/TTL compatible,and accepts either a three wire serial input ora 4-bit parallel word. The HMC629ALP4E is housedin a RoHS compliant 4x4 mm QFN leadless package,and requires no external matching components.Applications Cellular/3G infrastructure WiBro / WiMAX / 4G Microwave radio & VSAT Test equipment and sensors? IF & RF applications

The ADF4001 frequency synthesizer can be used to implement clock sources for PLLs that require very low noise, stable reference signals. It consists of a low-noise digital PFD (Phase Frequency Detector), a precision charge pump, a programmable reference divider, and a programmable 13-bit N counter. In addition, the 14-bit reference counter (R Counter), allows selectable REFIN frequencies at the PFD input. A complete PLL (Phase-Locked Loop) can be implemented if the synthesizer is used with an external loop filter and VCO (Voltage Controlled Oscillator) or VCXO (Voltage Controlled Crystal Oscillator). The N min value of 1 allows flexibility in clock generation.?

The ADAU1978 incorporates four high performance, analog-to-digital converters (ADCs) with 2 V rms capable ac-coupled inputs. The ADCs use a multibit sigma-delta (?-?) architecture with continuous time front end for low EMI. An I2C/serial peripheral interface (SPI) control port is included that allows a microcontroller to adjust volume and many other parameters. The ADAU1978 uses only a single 3.3 V supply. The part internally generates the required digital DVDD supply. The low power architecture reduces the power consumption. The ADAU1978 is available in a 40-lead LFCSP package. The on-chip PLL can derive the master clock from an external clock input or frame clock (sample rate clock). When fed with the frame clock, it eliminates the need for a separate high frequency master clock in the system.Note that throughout this data sheet, multifunction pins, such as SCL/CCLK, are referred to either by the entire pin name or by a single function of the pin, for example, CCLK, when only that function is relevant. APPLICATIONS Automotive audio systems Active noise cancellation system