Real Time Clock Real-Time Event Recorder

Real Time Clock

Delay Lines/Timing Elements Broadband Analog Time Delay to 24 GHz

EVAL KIT, VOLTAGE CONTROLLED OSCILLATOR;

Clock & Timer Development Tools LTC6995-2 Demo Board - 1sec Power-on Res

Timers & Support Products Low-Power General Purpose Timer

Real Time Clock 3V/5V RTC

Real Time Clock

The HMC7044 is a high performance, dual-loop, integer-N jitter attenuator capable of performing reference selection and generation of ultralow phase noise frequencies for high speed data converters with either parallel or serial (JESD204B type) interfaces. The HMC7044 features two integer mode PLLs and overlapping on-chip VCOs that are SPI-selectable with wide tuning ranges around 2.5 GHz and 3 GHz, respectively. The device is designed to meet the requirements of GSM and LTE base station designs, and offers a wide range of clock management and distribution features to simplify baseband and radio card clock tree designs. The HMC7044 provides 14 low noise and configurable outputs to offer flexibility in interfacing with many different components including data converters, field-programmable gate arrays (FPGAs), and mixer local oscillators (LOs).The DCLK and SYSREF clock outputs of the HMC7044 can be configured to support signaling standards, such as CML, LVDS, LVPECL, and LVCMOS, and different bias settings to offset varying board insertion losses.APPLICATIONS JESD204B clock generation Cellular infrastructure (multicarrier GSM, LTE, W-CDMA) Data converter clocking Microwave baseband cards Phase array reference distribution

The HMC1035LP6GE is a low-noise, wide-band 3.3 V clock generator IC with a fractional-N Phase Locked Loop (PLL) that features an integrated Voltage Controlled Oscillator (VCO). The device provides differential clock outputs between 25 MHz and 2500 MHz range. The HMC1035LP6GE features a low noise Phase Detector (PD) and Delta-Sigma modulator, capable of operating at up to 100 MHz which permits wider loop-bandwidths and excellent spurious performance.The HMC1035LP6GE features industry leading phase noise and jitter performance, across the operating range, that enable it to improve link level jitter performance, Bit-Error-Rates (BER) and eye diagram metrics. The superior noise floor (<-162 dBc/Hz) makes the HMC1035LP6GE an ideal source for a variety of applications?such as clock references for high speed data converters, physical layer devices (PHY), serializer/deserializer (SER DES) circuits, FPGAs and processors. The HMC1035LP6GE can also be used as an LO for 10G/40G/100G optical modules and transponders, as well as primary reference clock for 10G/40G/100G line cards, and for jitter attenuation and frequency translation.The differential output of the HMC1035LP6GE can be set to either External Termination, which could be used for LVPECL operation, or Internal Termination for operation in an LVDS compatible mode or LVPECL. Additionally, an ouput swing adjustment makes the device flexible and compatible with a wide variety of signal level requirements. The output can be internally terminated to reduce component count and cost or could be terminated externally using standard LVPECL termination methods. An Output Mute function allows the user to shut off the outputs, such as may be required for board testing or debugging. The LVPECL/LVDS, amplitude select and Output Mute function are all programmed SPI serial programming.The HMC1035LP6GE is designed to select between a Power Priority or a Performance Priority mode. The Power Priority setting reduces the current consumption of the part, whereas the Performance Priority setting improves the Jitter and Phase Noise performance.The 24 bit Delta-Sigma Modulator further enhances Hittite?s Exact Frequency Mode, which enables users to generate output frequencies with 0 Hz frequency error in many applications.APPLICATIONS 10G/40G/100G Optical Modules, Transponders, Line Cards OTN and SONET /SDH Applications Data Converters, Sample Clock Generation Cellular/4G Infrastructure High Frequency Processor/FPGA Clocks Any Frequency Clock Rate Generation Low Jitter SAW Oscillator Replacement DDS Replacement Frequency Translation Frequency Margining