The MAX5403/MAX5404/MAX5405 is a family of duallinear taper digital potentiometers. Each device has one3-terminal potentiometer and one 2-terminal variableresistor (Figure 1). The MAX5403/MAX5404/MAX5405operate from +2.7V to +5.5V single-supply voltagesand use an ultra-low supply current of 0.1µA. Thesedevices also provide glitchless switching betweenresistors taps as well as a convenient power-on reset(POR) that sets the wiper to the midscale position atpower-up. The potentiometer consists of a fixed resistorwith a wiper contact that is digitally controlled through a3-wire serial interface and has 256-tap points. It performsthe same function as a discrete potentiometer orvariable resistor.These parts are ideal for applications requiring digitallycontrolled resistors. Three resistance values are available:10kΩ (MAX5403), 50kΩ (MAX5404), and 100kΩ(MAX5405). A nominal resistor-temperature coefficientof 35ppm/°C end-to-end and 5ppm/°C ratiometric makethe MAX5403/MAX5404/MAX5405 ideal for applicationsrequiring low temperature-coefficient variable resistors,such as adjustable-gain circuit configurations.The MAX5403/MAX5404/MAX5405 are available in a 10-pin µMAX® package. Each device is guaranteed over theextended industrial temperature range (-40°C to +85°C).ApplicationsAdjustable Voltage ReferenceImpedance MatchingLCD Screen AdjustmentLow-Drift Programmable Gain Amplifier (PGA)Mechanical Potentiometer ReplacementProgrammable Filters, Delays, Time ConstantVolume Control

The MAX5403/MAX5404/MAX5405 is a family of duallinear taper digital potentiometers. Each device has one3-terminal potentiometer and one 2-terminal variableresistor (Figure 1). The MAX5403/MAX5404/MAX5405operate from +2.7V to +5.5V single-supply voltagesand use an ultra-low supply current of 0.1µA. Thesedevices also provide glitchless switching betweenresistors taps as well as a convenient power-on reset(POR) that sets the wiper to the midscale position atpower-up. The potentiometer consists of a fixed resistorwith a wiper contact that is digitally controlled through a3-wire serial interface and has 256-tap points. It performsthe same function as a discrete potentiometer orvariable resistor.These parts are ideal for applications requiring digitallycontrolled resistors. Three resistance values are available:10kΩ (MAX5403), 50kΩ (MAX5404), and 100kΩ(MAX5405). A nominal resistor-temperature coefficientof 35ppm/°C end-to-end and 5ppm/°C ratiometric makethe MAX5403/MAX5404/MAX5405 ideal for applicationsrequiring low temperature-coefficient variable resistors,such as adjustable-gain circuit configurations.The MAX5403/MAX5404/MAX5405 are available in a 10-pin µMAX® package. Each device is guaranteed over theextended industrial temperature range (-40°C to +85°C).ApplicationsAdjustable Voltage ReferenceImpedance MatchingLCD Screen AdjustmentLow-Drift Programmable Gain Amplifier (PGA)Mechanical Potentiometer ReplacementProgrammable Filters, Delays, Time ConstantVolume Control

The MAX5413/MAX5414/MAX5415 is a family of dual linear taper digital potentiometers. Each device has two 3-terminal potentiometers. The MAX5413/MAX5414/MAX5415 operate from +2.7V to +5.5V single-supply voltages and use an ultra-low 0.1µA supply current. These devices also provide glitchless switching between resistor taps, as well as a convenient power-on reset (POR) that sets the wiper to the midscale position at power-up. Each potentiometer consists of a fixed resistor with a wiper contact that is digitally controlled through a 3-wire serial interface and has 256 tap points. It performs the same function as a discrete potentiometer or variable resistor.These parts are ideal for applications requiring digitally controlled resistors. Three resistance values are available: 10kΩ (MAX5413), 50kΩ (MAX5414), and 100kΩ (MAX5415). A nominal resistor temperature coefficient of 35ppm/°C end-to-end and 5ppm/°C ratiometric make the MAX5413/MAX5414/MAX5415 ideal for applications requiring low temperature-coefficient variable resistors, such as adjustable-gain circuit configurations.The MAX5413/MAX5414/MAX5415 are available in a 14-pin TSSOP package. Each device is guaranteed over the extended industrial temperature range (-40°C to +85°C).ApplicationsAdjustable Voltage ReferenceImpedance MatchingLCD Screen AdjustmentLow-Drift Programmable-Gain AmplifiersMechanical Potentiometer ReplacementsProgrammable Filters, Delays, Time ConstantVolume Control

The MAX5460–MAX5468 linear-taper digital potentiometersperform the same function as a mechanical potentiometeror a variable resistor. These devices consist of afixed resistor and a wiper contact with 32-tap points thatare digitally controlled through a 2-wire serial interface.The MAX5462/MAX5465/MAX5468 are configured aspotentiometers. The rest of the devices in this family areconfigured as variable resistors. See Pin Configurationsfor part functionality.Three resistance values are available: 10kΩ (MAX5466/MAX5467/MAX5468), 50kΩ (MAX5463/MAX5464/MAX5465), and 100kΩ (MAX5460/MAX5461/MAX5462).The MAX5460–MAX5465 (100kΩ and 50kΩ) are availablein space-saving 5-pin and 6-pin SC70 packages.The MAX5466/MAX5467/MAX5468 (10kΩ) are availablein 5-pin and 6-pin SOT23 packages.ApplicationsGain AdjustmentLCD Screen AdjustmentLine Impedance MatchingMechanical Potentiometer ReplacementVolume Control

The MAX199 multi-range, 12-bit data-acquisition system(DAS) requires only a single +5V supply for operation,and converts analog signals up to ±4V at its inputs. Thissystem provides eight analog input channels that areindependently software programmable for a variety ofranges: ±VREF, ±VREF/2, 0V to VREF, or 0V to VREF/2.This increases effective dynamic range to 14 bits, andprovides the user flexibility to interface 4mA-to-20mA,±12V, and ±15V powered sensors to a single +5V system.In addition, the converter is fault-protected to±16.5V; a fault condition on any channel will not affectthe conversion result of the selected channel. Other featuresinclude a 5MHz bandwidth track/hold, 100kspsthroughput rate, internal/external clock, internal/externalacquisition control, 8+4 parallel interface, and operationwith an internal 4.096V or external reference.A hardware active-low SHDN pin and two programmable power-downmodes (STBYPD, FULLPD) provide low-currentshutdown between conversions. In STBYPD mode, thereference buffer remains active, eliminating start-updelays.The MAX199 employs a standard microprocessor (µP)interface. Its three-state data I/O interface is configuredto operate with 8-bit data buses, and data-access andbus-release timing specifications are compatible withmost popular µPs. All logic inputs and outputs areTTL/CMOS compatible.The MAX199 is available in 28-pin DIP, wide SO, SSOP,and ceramic SB packages.For a different combination of input ranges (±10V, ±5V,0V to 10V, 0V to 5V), see the MAX197 data sheet. For 12-bit bus interfaces, see the MAX196/MAX198 data sheet.ApplicationsAutomatic Testing SystemsData-Acquisition SystemsIndustrial-Control SystemsMedical InstrumentsRoboticsTelecommunications

The MAX199 multi-range, 12-bit data-acquisition system(DAS) requires only a single +5V supply for operation,and converts analog signals up to ±4V at its inputs. Thissystem provides eight analog input channels that areindependently software programmable for a variety ofranges: ±VREF, ±VREF/2, 0V to VREF, or 0V to VREF/2.This increases effective dynamic range to 14 bits, andprovides the user flexibility to interface 4mA-to-20mA,±12V, and ±15V powered sensors to a single +5V system.In addition, the converter is fault-protected to±16.5V; a fault condition on any channel will not affectthe conversion result of the selected channel. Other featuresinclude a 5MHz bandwidth track/hold, 100kspsthroughput rate, internal/external clock, internal/externalacquisition control, 8+4 parallel interface, and operationwith an internal 4.096V or external reference.A hardware active-low SHDN pin and two programmable power-downmodes (STBYPD, FULLPD) provide low-currentshutdown between conversions. In STBYPD mode, thereference buffer remains active, eliminating start-updelays.The MAX199 employs a standard microprocessor (µP)interface. Its three-state data I/O interface is configuredto operate with 8-bit data buses, and data-access andbus-release timing specifications are compatible withmost popular µPs. All logic inputs and outputs areTTL/CMOS compatible.The MAX199 is available in 28-pin DIP, wide SO, SSOP,and ceramic SB packages.For a different combination of input ranges (±10V, ±5V,0V to 10V, 0V to 5V), see the MAX197 data sheet. For 12-bit bus interfaces, see the MAX196/MAX198 data sheet.ApplicationsAutomatic Testing SystemsData-Acquisition SystemsIndustrial-Control SystemsMedical InstrumentsRoboticsTelecommunications

The MAX1602 DC power-switching IC contains a network of low-resistance MOSFET switches that deliver selectable VCC and VPP voltages to a single CardBus or PC Card host socket. Key features include low-resistance switches, small packaging, soft-switching action, and compliance with PCMCIA specifications for 3V/5V switching. 3.3V-only power switching for fast, 32-bit CardBus applications is supported in two ways: low-resistance 3.3V switches allow high 3.3V load currents (up to 1A); and completely independent internal charge pumps let the 3.3V switch operate normally, even if the +5V and +12V supplies are disconnected or turned off to conserve power. The internal charge pumps are regulating types that draw reduced input current when the VCC switches are static. Power consumption is automatically reduced to 11µA max when the outputs are high-Z or GND.Other key features include guaranteed specifications for output current limit level, and guaranteed specifications for output rise/fall times (in compliance with PCMCIA specifications). Reliability is enhanced by thermal-overload protection, accurate current limiting, an overcurrent-fault flag output, and undervoltage lock-outs. The CMOS/TTL-logic interface is flexible, and can tolerate logic input levels in excess of the positive supply rail.The MAX1602 fits a complete CardBus/PCMCIA switch into a space-saving, 16-pin QSOP package.ApplicationsData LoggingDocking StationsHandy TerminalsPCMCIA Read/Write Drives

Secondary-Side Synchronous Rectifier Driver Features:Works with DCM and BCM/CrCM Conduction Mode Flyback TopologiesVCC: 4.5V to 40VSupports Up to 150V MOSFETs26ns Turn-Off Propagation DelayAccurate Minimum On and Off Timers for Reliable OperationAdjustable and Accurate Trip Point: +5mV to –30mV1Ω Gate Driver Pull-DownSOT-23 5-Lead Package

LTPoE++/PoE+/PoE PD Controller Features: IEEE 802.3af/at and LTPoE++™ Powered Device (PD) Controller LTPoE++ Supports Power Levels Up to 90W LT4275A Supports All of the Following Standards: LTPoE++ 38.7W, 52.7W, 70W and 90W IEEE 802.3at 25.5W Compliant IEEE 802.3af Up to 13W Compliant LT4275B is IEEE 802.3at/af Compliant LT4275C is IEEE 802.3af Compliant 100V Absolute Maximum Input Voltage Wide Junction Temperature Range (–40°C to 125°C) Overtemperature Protection Integrated Signature Resistor External Hot Swap™ N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency Programmable Aux Power Support as Low as 9V Optional Support of Non-Standard Low Voltage PoE Available in 10-Lead MSOP and 3mm × 3mm DFN Packages

LTPoE++/PoE+/PoE PD Controller Features: IEEE 802.3af/at and LTPoE++™ Powered Device (PD) Controller LTPoE++ Supports Power Levels Up to 90W LT4275A Supports All of the Following Standards: LTPoE++ 38.7W, 52.7W, 70W and 90W IEEE 802.3at 25.5W Compliant IEEE 802.3af Up to 13W Compliant LT4275B is IEEE 802.3at/af Compliant LT4275C is IEEE 802.3af Compliant 100V Absolute Maximum Input Voltage Wide Junction Temperature Range (–40°C to 125°C) Overtemperature Protection Integrated Signature Resistor External Hot Swap™ N-Channel MOSFET for Lowest Power Dissipation and Highest System Efficiency Programmable Aux Power Support as Low as 9V Optional Support of Non-Standard Low Voltage PoE Available in 10-Lead MSOP and 3mm × 3mm DFN Packages