DC1488A-B: Demo Board for the LTC2634-12 Quad 12-Rail-to-Rail DACs with 10ppm/°C Reference.

Demonstration circuit DC1259A is a single-battery battery- backup controller featuring the LTC4110. The LTC4110 controller provides all the features and functions to offer a complete standalone battery-backup system. The LTC4110 is a multi-chemistry flyback battery charger and discharger that is scalable with other LTC4110s to allow a larger battery array for increased capacity and/or redundancy. The demo board requires a 12V input voltage and is initially configured to charge a 3 Li-Ion Smart Battery at 1A; the charge voltage is 12.6V. However, the Demo board can be easily configured for a standard battery as well. A SMBus interface is offered to allow host communications in control and status and/or support Smart Batteries. However, no host is required to use the LTC4110.

Power Management IC Development Tools Battery Backup System Manager

Demonstration circuit 2692A-A features the LTC2662, 5-channel, 16-bit, 300mA, current source DACs with 10ppm/°C reference in a 5mm × 5mm QFN package. This device features per-channel SoftSpan™ configuration of 3.125mA to 300mA, a separate supply for each output, and an internal switch to allow any output pin to be connected to V−. Pin-compatible 12-bit versions are available for lower resolution requirements on the DC2692A-B.

Demonstration circuit 761 is a low noise regulated charge pump featuring the LTC3204 (Burst Mode operation) in the 2X2 DFN package. There are two assembly versions, DC761A-A and DC761A-B for the LTC3204-5 (5V output) and LTC3204-3.3 (3.3V output) respectively. The DC761A-A produces a regulated 5V output from a 2.7V to 5.5V input. The guaranteed output load current is 150mA for VIN between 3.1V and 5.5V, and 65mA for VIN less than 3.1V. The DC761A-B produces a regulated 3.3V output from a 1.8V to 4.5V input. The guaranteed output current is 50mA from VIN between 1.9V and 4.5V, and 40mA for VIN less than 1.9V. The circuit requires only three tiny 0603 surface mount capacitors and uses minimal board space. No inductor or diodes are needed. The circuit features automatic Burst Mode® operation at light loads to maintain low supply current.

The ADuC832 is a complete, smart transducer front end, integrating a high performance self-calibrating multichannel 12-bit ADC, dual 12-bit DACs, and programmable 8-bit MCU on a single chip.The device operates from a 32 kHz crystal with an on-chip PLL, generating a high frequency clock of 16.78 MHz. This clock is, in turn, routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an 8052 and is therefore 8051 instruction set compatible with 12 core clock periods per machine cycle. 62 kB of nonvolatile Flash/EE program memory are provided on chip. There are also 4 kB of nonvolatile Flash/EE data memory, 256 bytes of RAM, and 2 kB of extended RAM integrated on chip.The ADuC832 also incorporates additional analog functionality with two 12-bit DACs, a power supply monitor, and a band gap reference. On-chip digital peripherals include two 16-bit ?-? DACs, a dual-output 16-bit PWM, a watchdog timer, timeinterval counter, three timers/counters, Timer 3 for baud rate generation, and serial I/O ports (SPI, I2C?, and UART).Applications Optical networking?laser power control Base station systems Precision instrumentation, smart sensors Transient capture systems DAS and communications systems Upgrade to ADuC812 systems; runs from 32 kHz External crystal with on-chip PLL. Also available: ADuC831 pin-compatible upgrade to existing ADuC812 systems that require additional code or data memory; runs from 1 MHz to 16 MHz External crystal?

The ADRF6780 is a silicon germanium (SiGe) design, wideband,microwave upconverter optimized for point to point microwaveradio designs operating in the 5.9 GHz to 23.6 GHz frequencyrange.The upconverter offers two modes of frequency translation. The device is capable of direct conversion to radio frequency (RF) from baseband I/Q input signals, as well as single sideband (SSB) upconversion from a real intermediate frequency (IF) input carrier frequency. The baseband inputs are high impedance and are generally terminated off chip with 100 ? differential back terminations. The baseband I/Q input path can be disabled and a modulated real IF signal anywhere from 0.8 GHz to 3.5 GHz can fed into the IF input path and upconverted to 5.9 GHz to 23.6 GHz while suppressing the unwanted sideband by typically better than 25 dBc. The serial port interface (SPI) allows tweaking of the quadrature phase adjustment to allow optimum sideband suppression. In addition, the SPI interface allows powering down the output power detector to reduce power consumption when power monitoring is not necessary.The ADRF6780 upconverter comes in a compact, thermallyenhanced, 5 mm ? 5 mm LFCSP package. The ADRF6780operates over the ?40?C to +85?C temperature range.APPLICATIONS Point to point microwave radios Radar, electronic warfare systems Instrumentation, automatic test equipment (ATE)

The AD8276/AD8277?are general-purpose, unity-gain difference amplifiers intended for precision signal conditioning in power critical applications that require both high performance and low power. They provide exceptional 86 dB common-mode rejection ratio (CMRR) and high bandwidth while amplifying signals well beyond the supply rails. The on-chip resistors are laser trimmed for gain drift of 1 ppm/?C and high CMRR. The AD8276/AD8277 also have extremely low gain drift vs. temperature.The common-mode range of the amplifiers extends to almost double the supply voltage, making these amplifiers ideal for single-supply applications that require a high common-mode voltage range. The internal resistors and electrostatic discharge (ESD) circuitry at the inputs also provide overvoltage protection to the op amps.The AD8276/AD8277 are unity-gain stable. Although they are optimized for use as difference amplifiers, they can also be connected in high precision, single-ended configurations with G = ?1, +1, or +2. The AD8276/AD8277 provide an integrated precision solution that has smaller size, lower cost, and improved performance than a discrete alternative.The AD8276/AD8277 operate on single supplies (2.0 V to 36 V) or dual supplies (?2 V to ?18 V). The maximum quiescent supply current is 200 ?A per channel, which is ideal for battery-operated and portable systems.The AD8276 is available in the space-saving 8-lead mini small outline package (MSOP) and the standard small outline (SOIC) package, as well as in die form, and the AD8277 is offered in a 14-lead SOIC package. Both are specified for performance over the industrial temperature range of ?40?C to +85?C and are fully RoHS compliant.Applications Voltage measurement and monitoring Current measurement and monitoring Differential output instrumentation amplifier Portable, battery-powered equipment Test and measurement

The LTC3880/LTC3880-1 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay? software development tool with graphical user interface (GUI).Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Voltage, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880 incorporates a 5V linear regulator while the LTC3880-1 uses an external 5V supply for minimum power loss. See comparison to LTC3887 below. VOUT Start-Up Time Max VOUT0/1 Fast ADC Mode for 1 Parameter LTC3887/LTC3887-1 35ms 5.5V/5.5V No LTC3880/LTC3880-1 120ms 4V/5.4V No Applications High Current Distributed Power Systems Telecom, Datacom and Storage Systems Intelligent Energy Efficient Power Regulation

The LTM8054 is a 36VIN, buck-boost ?Module?(micromodule) regulator. Included in the package are theswitching controller, power switches, inductor and supportcomponents. A resistor to set the switching frequency, aresistor divider to set the output voltage, and input andoutput capacitors are all that are needed to complete thedesign. Other features such as input and output averagecurrent regulation may be implemented with just a fewcomponents. The LTM8054 operates over an input voltagerange of 5V to 36V, and can regulate output voltagesbetween 1.2V and 36V. The SYNC input and CLKOUToutput allow easy synchronization.The LTM8054 is housed in a compact overmolded ballgrid array (BGA) package suitable for automated assemblyby standard surface mount equipment. The LTM8054 isRoHS compliant.Buck Boost Selection Table LTM8054 LTM8055 LTM8056 VIN (Operation) 36 36 58 VIN Abs Max 40 40 60 VOUT Abs Max 40 40 60 IOUT (Peak) 24VIN, 12VOUT 5.4 8.5 5.5 Package 15 x 11.25mm x 3.42mm BGA 15 x 15mm x 4.92mm BGA 15 x 15mm x 4.92mm BGA Applications High Power Battery-Operated Devices Industrial Control Solar Powered Voltage Regulator Solar Powered Battery Charging