Demonstration circuit 2973A shows the LTC3337 Primary Battery State of Health (SOH) monitor with precision coulomb counter operating with a configurable peak current limit. The LTC3337 supports input voltages from 1.8V to 5.5V and a peak current up to 100mA with a quiescent current of 100nA. Coulomb count, battery voltage, and Battery Series Resistance (BSR) are measurable and can be used to quantify the charge state and health of a battery. The DC2973A demonstrates a simple layout for the highest-power configuration of the LTC3337. The circuit can be reduced for lower IPEAK levels. The demo board can be connected directly to a PC using a micro USB cable in order to run a GUI and configure simple a Battery State of Charge (SOC) monitor. Source code for the GUI is available and can be used as a starting point for LTC3337 firmware development.

DC323A-A: Demo Board for LTC1751 Micropower, Regulated Charge Pump DC/DC Converters.

Demonstration Circuit 383B is multipurpose demonstration board featuring the LT1930 and LT1931. The demo board offers three separate DC/DC converters. The Boost circuit is designed to convert a 5V input to 12V output at 300mA maximum load. The SEPIC circuit generates a 12V/300mA output from a 10V~16V variable input. The Inverter circuit is designed for applications requiring -12V/350mA from a positive 12V input.

The LTC1871 is a wide input range, current mode, boost, flyback or SEPIC controller that drives an N-channel power MOSFET and requires very few external components. Intended for low to medium power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET?s on-resistance, thereby maximizing efficiency.The IC?s operating frequency can be set with an external resistor over a 50kHz to 1MHz range, and can be synchronized to an external clock using the MODE/SYNC pin. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10?A make the LTC1871 ideally suited for battery-operated systems.For applications requiring constant frequency operation, Burst Mode operation can be defeated using the MODE/ SYNC pin. Higher output voltage boost, SEPIC and flyback applications are possible with the LTC1871 by connecting the SENSE pin to a resistor in the source of the power MOSFET.The LTC1871 is available in the 10-lead MSOP package. Vin Range INTVcc Features LTC1871 2.5V to 36V 5.2V - LTC1871-1 2.5V to 36V 5.2V Lower Burst Mode Threshold (0.195V vs. 0.3V) LTC1871-7 6V to 36V 7V Drives 6V Gate N-Channel MOSFETs LTC1871X 2.5V to 36V 5.2V 175?C Junction Temp, 100% Tested at 175?C Applications Telecom Power Supplies Portable Electronic Equipment

DC445A: Demo Board for the LT1944-1 Dual Micropower Step-Up DC/DC Converter.

The AD9518-31?The AD9518-31 provides a multi-output clock distributionfunction with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.75 GHzto 2.25 GHz. Optionally, an external VCO/VCXO of up to 2.4 GHz can be used.The AD9518-3 emphasizes low jitter and phase noise to maximize data converter performance, and it can benefit otherapplications with demanding phase noise and jitter requirements.The AD9518-3 features six LVPECL outputs (in three pairs).The LVPECL outputs operate to 1.6 GHz.For applications that require additional outputs, a crystal reference input, zero-delay, or EEPROM for automatic configuration at startup, the AD9520 and AD9522 are available.In addition, the AD9516 and AD9517 are similar to the AD9518but have a different combination of outputs.Each pair of outputs has dividers that allow both the divideratio and coarse delay (or phase) to be set. The range of division for the LVPECL outputs is 1 to 32.The AD9518-3 is available in a 48-lead LFCSP and can beoperated from a single 3.3 V supply. An external VCO, which requires an extended voltage range, can be accommodated by connecting the charge pump supply (VCP) to 5 V. A separate LVPECL power supply can be from 2.5 V to 3.3 V (nominal).The AD9518-3 is specified for operation over the industrial range of ?40?C to +85?C.Applications Low jitter, low phase noise clock distribution 10/40/100 Gb/sec networking line cards, including SONET, Synchronous Ethernet, OTU2/3/4 Forward error correction (G.710) Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs High performance wireless transceivers ATE and high performance instrumentation 1AD9518 is used throughout the data sheet to refer to all the members of the AD9518 family. However, when AD9518-3 is used, it refers to that specific member of the AD9518 family.

The AD9520-4 provides a multioutput clock distributionfunction with subpicosecond jitter performance, along with anon-chip PLL and VCO. The on-chip VCO tunes from 1.4 GHz to1.8 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHzcan also be used.The AD9520-4 serial interface supports both SPI and I?C ports.An in-package EEPROM, which can be programmed through theserial interface, can store user-defined register settings forpower-up and chip reset.The AD9520-4 features 12 LVPECL outputs in four groups. Anyof the 1.6 GHz LVPECL outputs can be reconfigured as two250 MHz CMOS outputs. If an application requires LVDSdrivers instead of LVPECL drivers, refer to the AD9522-4.Each group of three outputs has a divider that allows both thedivide ratio (from 1 to 32) and the phase offset or coarse timedelay to be set.The AD9520-4 is available in a 64-lead LFCSP and can be operatedfrom a single 3.3 V supply. The external VCO can have anoperating voltage of up to 5.5 V. A separate output driver powersupply can be from 2.375 V to 3.465 V.The AD9520-4 is specified for operation over the standardindustrial range of ?40?C to +85?C.Applications Low jitter, low phase noise clock distribution Clock generation and translation for SONET, 10Ge, 10GFC, Synchronous Ethernet, OTU2/3/4 Forward error correction (G.710) Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs High performance wireless transceivers ATE and high performance instrumentation Broadband infrastructures

The AD9522-31 provides a multioutput clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.72 GHz to 2.25 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz can also be used. The AD9522 serial interface supports both SPI and I2C? ports. An in-package EEPROM can be programmed through the serial interface and store user-defined register settings for power-up and chip reset.The AD9522 features 12 LVDS outputs in four groups. Any of the 800 MHz LVDS outputs can be reconfigured as two 250 MHz CMOS outputs.Each group of outputs has a divider that allows both the divide ratio (from 1 to 32) and the phase (coarse delay) to be set. The AD9522 is available in a 64-lead LFCSP and can be operated from a single 3.3 V supply. The external VCO can have an operating voltage up to 5.5 V. The AD9522 is specified for operation over the standard industrialrange of ?40?C to +85?C.The AD9520-3 is an equivalent part to the AD9522-3 featuringLVPECL / CMOS drivers instead of LVDS / CMOS drivers.1The AD9522 is used throughout this data sheet to refer to all the members of the AD9522 family. However, when AD9522-3 is used, it is referring to that specificmember of the AD9522 family.ApplicationsLow jitter, low phase noise clock distributionClock generation and translation for SONET, 10Ge, 10G FC, and other 10 Gbps protocolsForward error correction (G.710)Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEsHigh performance wireless transceiversATE and high performance instrumentationBroadband infrastructuresData Sheet, Rev. 0, 10/08

The AD9522-41 provides a multioutput clock distributionfunction with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.4 GHz to 1.8 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz can also be used.The AD9522 serial interface supports both SPI and I2C? ports. An in-package EEPROM can be programmed through the serial interface and store user-defined register settings for power-up and chip reset.The AD9522 features 12 LVDS outputs in four groups. Any of the 800 MHz LVDS outputs can be reconfigured as two 250 MHz CMOS outputs.Each group of outputs has a divider that allows both the divideratio (from 1 to 32) and the phase (coarse delay) to be set.The AD9522 is available in a 64-lead LFCSP and can be operatedfrom a single 3.3 V supply. The external VCO can have an operating voltage up to 5.5 V.The AD9522 is specified for operation over the standard industrialrange of ?40?C to +85?C.The AD9520-4 is an equivalent part to the AD9522-4 featuringLVPECL / CMOS drivers instead of LVDS / CMOS drivers.1The AD9522 is used throughout this data sheet to refer to all the members of the AD9522 family. However, when AD9522-4 is used, it is referring to that specificmember of the AD9522 family.ApplicationsLow jitter, low phase noise clock distributionClock generation and translation for SONET, 10Ge, 10G FC, and other 10 Gbps protocolsForward error correction (G.710)Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEsHigh performance wireless transceiversATE and high performance instrumentationBroadband infrastructuresData Sheet, Rev. 0, 10/08

The AD9522-51 provides a multioutput clock distribution function with subpicosecond jitter performance, along with an on-chip PLL that can be used with an external VCO.???The AD9522 serial interface supports both SPI and I2C? ports. An in-package EEPROM can be programmed through the serial interface and store user-defined register settings for power-up and chip reset.The AD9522 features 12 LVDS outputs in four groups. Any of the 800 MHz LVDS outputs can be reconfigured as two 250 MHz CMOS outputs.Each group of outputs has a divider that allows both the divide ratio (from 1 to 32) and the phase (coarse delay) to be set.The AD9522 is available in a 64-lead LFCSP and can be operated from a single 3.3 V supply. The external VCO can have an operating voltage up to 5.5 V.The AD9522 is specified for operation over the standard industrial range of ?40?C to +85?C.The AD9520-5 is an equivalent part to the AD9522-5 featuring LVPECL/CMOS drivers instead of LVDS/CMOS drivers.1The AD9522 is used throughout this data sheet to refer to all the members of the AD9522 family. However, when AD9522-5 is used, it is referring to that specific member of the AD9522 family.ApplicationsLow jitter, low phase noise clock distributionClock generation and translation for SONET, 10Ge, 10G FC, and other 10 Gbps protocolsForward error correction (G.710)Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEsHigh performance wireless transceiversATE and high performance instrumentationBroadband infrastructures