Linear Technology Corp.
Milpitas, CA 95035
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Analog-To-Digital Converter targets PA linearization.
Housed in 9 x 9 mm QFN package, 12-bit, 185 Msps Model LTC2220-1 uses 910 mW and achieves 67.5 dB SNR and 80 dB SFDR up to 140 MHz input. Digital outputs can be differential LVDS or single-ended CMOS. Separate digital output power supply allows CMOS output swing to range from 0.5-3.3 V, minimizing switching noise. With 775 MHz full power bandwidth, ADC is suited for digital predistortion power...
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DC/DC Converter includes integrated boost and catch diodes.
Model LT3470 40 V micropower step-down dc/dc converter operates from input voltages of 4-40 V, delivering up to 200 mA of output current, optimizing it for 2-cell Li-Ion, wall adapter or automotive power sources. Burst ModeÃ-® operation reduces quiescent current to 26 Ã-µA. Hysteretic control scheme provides output ripple of less than 10 mVp-p. Available in low profile ThinSot package,...
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Charge Pump Doubler is offered in 2 x 2 mm DFN package.
Model LTC3204-3.3 features low-noise constant-frequency operation at 1.2 MHz and generates regulated boosted output voltage of 3.3 V from minimum input voltage of 1.8 V, at output currents up to 50 mA. LTC3204-5 produces 5 V output from minimum 2.7 V input at currents up to 150 mA. Automatic Burst ModeÃ-® operation at light loads provides low supply current of 48 uA and helps extend battery...
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RF Active Mixers feature operating current of 28 mA.
With IIP3 (Input Third-Order Intercept) of 16.5 dBm @ 900 MHz and noise figure of 11 dB, LT5526 is suited for use as downconverting or upconverting mixer and operates over bandwidth from 100 kHz to 2 GHz. Model LT5525 features on-chip RF input transformer and offers internal 50 ohm impedance matching at RF and LO (Local Oscillator) inputs, which can be driven single-ended. It features IIP3 of 21...
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I2C Serial Interface DAC comes in 3 x 3 mm DFN package.
Featuring double-buffered data latches and asynchronous DAC update pin, 16-Bit monotonic LTC2606 provides 400 kHz I2C interface with 27 user-selectable slave addresses. This allows multiple DACs on same bus and minimizes address conflicts with other components. Output buffer provides drive capability over 2.7-5.5 V supply range, and DAC output can directly drive capacitive loads up to 1,000 pF or...
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DC/DC Controller eliminates need for transformers.
Using 2 inductors, step-up, 2-phase Model LT3782 can regulate 50 V output at 4 A load current with 96% efficiency from input source of 10-36 V. Unit includes adjustable slope compensation, time delay, and undervoltage lockout, as well as synchronous operation and clock synchronization. Operating from input range of 6-40 V, Model LT3782 uses constant frequency 150-500 kHz current mode...
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DC/DC Converter optimizes battery run-time.
Housed in 4 x 3 mm DFN package, buck-boost Model LTC3442 delivers continuous 1.2 A of output current at efficiencies as high as 95%. Synchronous, fixed-frequency unit operates from input voltage of 2.4-5.5 V and can provide fixed output voltage between 2.4-5.25 V. Programmable switching frequency can be set between 300 kHz and 2 MHz via single resistor, and Burst ModeÃ-® operation can be...
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Battery Charger offers programmable charge current to 1 A.
Standalone Model LTC4061 charges 4.2 and 4.4 V float voltage Li-Ion batteries with Ã-
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Integrated Circuit provides power management.
Housed in 4mm x 4mm QFN-14 package, Model LTC3456 is optimized for portable applications powered by 2-cell batteries, USB, or wall adapter. It delivers up to 150 mA to fixed 3.3 V Main output and up to 200 mA to adjustable Core output. Unit provides 3.3 V, 50 mA Hot Swap(TM) output for flash memory cards and always-alive VMAX to power real-time clock. Main and Core 1 MHz switching regulators...
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DC/DC Controller has margining and PLL capabilities.
Able to supply outputs as low as 0.6 V, synchronous, step-down LTC3770 integrates tracking and sequencing functions as well as output margining capability. Constant on-time, valley current mode architecture, combined with minimum on-time of 50 nsec, allows control loop to respond instantly to load steps. Converter uses current mode control and can operate without sense resistor. It features...
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