Analog Devices Inc./Maxim Integrated

The LTC491 is a low power differential bus/line transceiver designed for multipoint data transmission standard RS485 applications with extended common mode range (12V to –7V). It also meets the requirements of RS422.The CMOS design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload or ESD damage.The driver and receiver feature three-state outputs, with the driver outputs maintaining high impedance over the entire common mode range. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs into a high impedance state.The receiver has a fail safe feature which guarantees a high output state when the inputs are left open.Both AC and DC specifications are guaranteed from 0°C to 70°C and 4.75V to 5.25V supply voltage range.ApplicationsLow Power RS485/RS422 TransceiverLevel Translator

The LTC5100 is a 3.2Gbps VCSEL driver offering an unprecedented level of integration and high speed performance. The part incorporates a full range of features to ensure consistently outstanding eye diagrams. The data inputs are AC coupled, eliminating the need for external capacitors. The LTC5100 has a precisely controlled 50Ω output that is DC coupled to the laser, allowing arbitrary placement of the IC. No coupling capacitors, ferrite beads or external transistors are needed, simplifying layout, reducing board area and the risk of signal corruption. The unique output stage of the LTC5100 confines the modulation current to the ground system, isolating the high speed signal from the power supply to minimize RFI.The LTC5100 supports fully automated production with its extensive monitoring and control features. Integrated 10-bit DACs eliminate the need for external potentiometers. An onboard 10-bit ADC provides the laser current and voltage, as well as monitor diode current and temperature. Status information is available from the I2C serial interface for feedback and statistical process control.An internal digital controller compensates laser temperature drift and provides extensive laser safety features.ApplicationsGigabit Ethernet and Fibre Channel TransceiversSFF and SFP Transceiver ModulesProprietary Fiber Optic Links

The LTC5505-X is an RF power detector for RF applications operating in the 300MHz to 3.5GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small 5-pin ThinSOT package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3xNiMH.The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the VOUTpin. A power saving shutdown mode reduces supply current to less than 2µA.The LTC5505-1 operates with input power levels from –28dBm to 18dBm. The LTC5505-2 operates with input power levels from –32dBm to 12dBm.ApplicationsMultimode Mobile Phone ProductsPCS DevicesWireless Data ModemsWireless and Cable InfrastructureRF Power AlarmEnvelope Detector

The LTC5507 is an RF power detector for applications operating from 100kHz to 1000MHz. The input frequency range is determined by an external capacitor. A temperature-compensated Schottky diode peak detector and buffer amplifier are combined in a small 6-pin ThinSOT package.The RF input voltage is peak detected using an on-chip Schottky diode and external capacitor. The detected voltage is buffered and supplied to the VOUTpin. A power saving shutdown mode reduces supply current to less than 2µA.ApplicationsWireless TransceiversWireless and Cable InfrastructureRF Power AlarmEnvelope Detector

The LTC5508 is an RF power detector for RF applications operating in the 300MHz to 7GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small SC70 package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3xNiMH.The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the Voutpin. A power saving shutdown mode reduces supply current to less than 2µA.The LTC5508 operates with input power levels from –32dBm to 12dBm.Applications802.11a, 802.11b, 802.11g, 802.15Multimode Mobile Phone ProductsOptical Data LinksWireless Data ModemsWireless and Cable InfrastructureRF Power AlarmEnvelope Detector

The LTC5509 is an RF power detector for RF applications operating in the 300MHz to 3GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small SC70 package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3xNiMH.The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the VOUTpin without gain compression. Consequently, the output voltage is linearly proportional to the RF input voltage. A power saving shutdown mode reduces supply current to less than 2µA.The LTC5509 operates with input power levels from –30dBm to 6dBm.ApplicationsMultimode Mobile Phone ProductsOptical Data LinksWireless Data ModemsWireless and Cable InfrastructureRF Power AlarmEnvelope Detector

The LTC5510 is a high linearity mixer optimized for applications requiring very wide input bandwidth, low distortion, and low LO leakage. The chip includes a double-balanced active mixer with an input buffer and a high speed LO amplifier. The input is optimized for use with 1:1 transmission line baluns, allowing very wideband impedance matching. The mixer can be used for both up- and down-conversion and can be used in wideband systems.The LO can be driven differentially or single-ended and requires only 0dBm of LO power to achieve excellent distortion and noise performance, while also reducing external drive circuit requirements. The LTC5510 offers low LO leakage, greatly reducing the need for output filtering to meet LO suppression requirements.The LTC5510 is optimized for 5V but can also be used with a 3.3V supply with slightly reduced performance. The shutdown function allows the part to be disabled for further power savings.ApplicationsWideband Receivers/TransmittersCable Downlink InfrastructureHF/VHF/UHF MixerWireless Infrastructure

The LTC5531 is an RF power detector for RF applications operating in the 300MHz to 7GHz range. A temperature compensated Schottky diode peak detector and buffer amplifier are combined in a small ThinSOT™package. The supply voltage range is optimized for operation from a single lithium-ion cell or 3xNiMH.The RF input voltage is peak detected using an on-chip Schottky diode. The detected voltage is buffered and supplied to the VOUTpin. A power saving shutdown mode reduces current to less than 2µA. The initial offset voltage of 120mV ±35mV can be precisely adjusted using the VOSpin.The LTC5531 operates with input power levels from –32dBm to 10dBm.*Higher frequency operation is achievable with reduced performance. Consult factory for more information.Applications802.11a, 802.11b, 802.11g, 802.15, 802.16Multimode Mobile Phone ProductsOptical Data LinksWireless Data ModemsWireless and Cable InfrastructureRF Power AlarmEnvelope Detector