The AD8042 is a low power voltage feedback, high speed amplifier designed to operate on +3 V, +5 V or ± 5 V supplies. It has true single supply capability with an input voltage range extending 200 mV below the negative rail and within 1 V of the positive rail.The output voltage swing extends to within 30 mV of each rail, providing the maximum output dynamic range. Additionally, it features gain flatness of 0.1 dB to 14 MHz while offering differential gain and phase error of 0.04% and 0.06° on a single 5 V supply. This makes the AD8042 useful for professional video electronics such as cameras, video switchers or any high speed portable equipment. The AD8042's low distortion and fast settling make it ideal for buffering single-supply, high speed Analog-to-Digital converters (ADCs).The AD8042 offers low power supply current of 12 mA maximum and can run on a single 3.3 V power supply. These features are ideally suited for portable and battery powered applications where size and power are critical.The wide bandwidth of 160 MHz along with 200 V/µs of slew rate on a single 5 V supply make the AD8042 useful in many general-purpose, high speed applications where single supplies from +3.3 V to +12 V and dual power supplies of up to ±6 V are needed. The AD8042 is available in 8-lead PDIP and SOIC_N packages.ApplicationsVideo switchersDistribution amplifiersAnalog-to-digital driversProfessional camerasCCD Imaging systemsUltrasound equipment (multichannel)

The MAX9725A–MAX9725D fixed-gain, stereo headphone amplifiers are ideal for portable equipment where board space is at a premium. The MAX9725E offers the flexibility to adjust the gain with external input and feedback resistors. The MAX9725A–MAX9725E use a unique DirectDrive® architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, board space, and component height. Fixed gains of -2V/V (MAX9725A), -1.5V/V (MAX9725B), -1V/V (MAX9725C), and -4V/V (MAX9725D) further reduce external component count. The adjustable gain of the MAX9725E DirectDrive headphone amplifier allows for any gain down to -1V/V using external resistors.The MAX9725 delivers up to 20mW per channel into a 32Ω load and achieves 0.006% THD+N. An 80dB at 1kHz power-supply rejection ratio (PSRR) allows the MAX9725 to operate from noisy digital supplies without an additional linear regulator. The MAX9725 includes ±8kV ESD protection on the headphone output. Comprehensive click-and-pop circuitry suppresses audible clicks and pops at startup and shutdown. A low-power shutdown mode reduces supply current to 0.6µA (typ).The MAX9725 operates from a single 0.9V to 1.8V supply, allowing the device to be powered directly from a single AA or AAA battery. The MAX9725 consumes only 2.1mA of supply current, provides short-circuit protection, and is specified over the extended -40°C to +85°C temperature range. The MAX9725 is available in a tiny (1.54mm x 2.02mm x 0.6mm) 12-bump chip-scale package (UCSP™) and a 12-pin thin QFN package (4mm x 4mm x 0.8mm).ApplicationsCell PhonesMP3 PlayersPDAsPortable Audio EquipmentSmartphones

The LT6230/LT6231/LT6232 are single/dual/quad low noise, rail-to-rail output unity-gain stable op amps that feature 1.1nV/√Hz noise voltage and draw only 3.5mA of supply current per amplifier. These amplifiers combine very low noise and supply current with a 215MHz gain-bandwidth product, a 70V/μs slew rate and are optimized for low supply voltage signal conditioning systems. The LT6230-10 is a single amplifier optimized for higher gain applications resulting in higher gain bandwidth and slew rate. The LT6230 and LT6230-10 include an enable pin that can be used to reduce the supply current to less than 10μA. The amplifier family has an output that swings within 50mV of either supply rail to maximize the signal dynamic range in low supply applications and is specified on 3.3V, 5V and ±5V supplies. The en • √ISUPPLY product of 1.9 per amplifier is among the most noise efficient of any op amp. The LT6230/LT6230-10 are available in the 6-lead SOT‑23 package and the LT6231 dual is available in the 8-pin SO package with standard pinouts. For compact layouts, the dual is also available in a tiny dual fine pitch leadless package (DFN). The LT6232 is available in the 16-pin SSOP package.Applications Ultrasound Amplifiers Low Noise, Low Power Signal Processing Active Filters Driving A/D Converters Rail-to-Rail Buffer Amplifiers

The single MAX4036/MAX4037 and dual MAX4038/MAX4039 operational amplifiers operate from a single +1.4V to +3.6V (without reference) or +1.8V to +3.6V (with reference) supply and consume only 800nA of supply current per amplifier, and 1.1µA for the optional reference. The MAX4036/MAX4038 feature a common-mode input voltage range from 0V to VDD - 0.4V at VDD = 1.4V. The MAX4037/MAX4039 feature a 1.232V voltage reference capable of sourcing 100µA and sinking 20µA.The MAX4036–MAX4039s' rail-to-rail outputs drive 5kΩ loads to within 25mV of the rails. Ultra-low supply current, low operating voltage, and rail-to-rail outputs make the MAX4036–MAX4039 ideal for use in single-cell lithium-ion (Li+), or two-cell NiCd/NiMH/alkaline battery-powered applications.The MAX4036 is available in an SC70 package, the MAX4037 in a SOT23 package, and the MAX4038/MAX4039 in UCSP™, µMAX®, and TDFN packages.ApplicationsActive BadgesBattery-Powered/Solar-Powered SystemsCellular HandsetsDigital Cameras (DIGICAMs)Electrometer AmplifiersGlucose MetersGPS SolutionsIP CameraMicropower Thermostats and PotentiostatsMP3 and Portable Media PlayersPagers and Cell PhonespH MetersPortable Medical InstrumentationRemote Sensor Amplifiers

The MAX4080/MAX4081 are high-side, current-sense amplifiers with an input voltage range that extends from 4.5V to 76V making them ideal for telecom, automotive, backplane, and other systems where high-voltage current monitoring is critical. The MAX4080 is designed for unidirectional current-sense applications and the MAX4081 allows bidirectional current sensing. The MAX4081 single output pin continuously monitors the transition from charge to discharge and avoids the need for a separate polarity output. The MAX4081 requires an external reference to set the zero-current output level (VSENSE = 0V). The charging current is represented by an output voltage from VREF to VCC, while discharge current is given from VREF to GND. For maximum versatility, the 76V input voltage range applies independently to both supply voltage (VCC) and common-mode input voltage (VRS+). High-side current monitoring does not interfere with the ground path of the load being measured, making the MAX4080/MAX4081 particularly useful in a wide range of high-voltage systems. The combination of three gain versions (5V/V, 20V/V, 60V/V = F, T, S suffix) and a user-selectable, external sense resistor sets the full-scale current reading and its proportional output voltage. The MAX4080/MAX4081 offer a high level of integration, resulting in a simple, accurate, and compact current-sense solution.The MAX4080/MAX4081 operate from a 4.5V to 76V single supply and draw only 75µA of supply current. These devices are specified over the automotive operating temperature range (-40°C to +125°C) and are available in a space-saving 8-pin µMAX® or SO package.Applications48V Telecom and Backplane Current MeasurementAutomotive (12V, 24V, or 42V Batteries)Avalanche Photodiode and PIN-Diode Current MonitoringBidirectional Motor ControlGeneral System/Board-Level Current SensingPower-Management SystemsPrecision High-Voltage Current Sources

The MAX4080/MAX4081 are high-side, current-sense amplifiers with an input voltage range that extends from 4.5V to 76V making them ideal for telecom, automotive, backplane, and other systems where high-voltage current monitoring is critical. The MAX4080 is designed for unidirectional current-sense applications and the MAX4081 allows bidirectional current sensing. The MAX4081 single output pin continuously monitors the transition from charge to discharge and avoids the need for a separate polarity output. The MAX4081 requires an external reference to set the zero-current output level (VSENSE = 0V). The charging current is represented by an output voltage from VREF to VCC, while discharge current is given from VREF to GND. For maximum versatility, the 76V input voltage range applies independently to both supply voltage (VCC) and common-mode input voltage (VRS+). High-side current monitoring does not interfere with the ground path of the load being measured, making the MAX4080/MAX4081 particularly useful in a wide range of high-voltage systems. The combination of three gain versions (5V/V, 20V/V, 60V/V = F, T, S suffix) and a user-selectable, external sense resistor sets the full-scale current reading and its proportional output voltage. The MAX4080/MAX4081 offer a high level of integration, resulting in a simple, accurate, and compact current-sense solution.The MAX4080/MAX4081 operate from a 4.5V to 76V single supply and draw only 75µA of supply current. These devices are specified over the automotive operating temperature range (-40°C to +125°C) and are available in a space-saving 8-pin µMAX® or SO package.Applications48V Telecom and Backplane Current MeasurementAutomotive (12V, 24V, or 42V Batteries)Avalanche Photodiode and PIN-Diode Current MonitoringBidirectional Motor ControlGeneral System/Board-Level Current SensingPower-Management SystemsPrecision High-Voltage Current Sources

The MAX4080/MAX4081 are high-side, current-sense amplifiers with an input voltage range that extends from 4.5V to 76V making them ideal for telecom, automotive, backplane, and other systems where high-voltage current monitoring is critical. The MAX4080 is designed for unidirectional current-sense applications and the MAX4081 allows bidirectional current sensing. The MAX4081 single output pin continuously monitors the transition from charge to discharge and avoids the need for a separate polarity output. The MAX4081 requires an external reference to set the zero-current output level (VSENSE = 0V). The charging current is represented by an output voltage from VREF to VCC, while discharge current is given from VREF to GND. For maximum versatility, the 76V input voltage range applies independently to both supply voltage (VCC) and common-mode input voltage (VRS+). High-side current monitoring does not interfere with the ground path of the load being measured, making the MAX4080/MAX4081 particularly useful in a wide range of high-voltage systems. The combination of three gain versions (5V/V, 20V/V, 60V/V = F, T, S suffix) and a user-selectable, external sense resistor sets the full-scale current reading and its proportional output voltage. The MAX4080/MAX4081 offer a high level of integration, resulting in a simple, accurate, and compact current-sense solution.The MAX4080/MAX4081 operate from a 4.5V to 76V single supply and draw only 75µA of supply current. These devices are specified over the automotive operating temperature range (-40°C to +125°C) and are available in a space-saving 8-pin µMAX® or SO package.Applications48V Telecom and Backplane Current MeasurementAutomotive (12V, 24V, or 42V Batteries)Avalanche Photodiode and PIN-Diode Current MonitoringBidirectional Motor ControlGeneral System/Board-Level Current SensingPower-Management SystemsPrecision High-Voltage Current Sources

The MAX4206 logarithmic amplifier computes the logratio of an input current relative to a reference current(externally or internally generated) and provides a correspondingvoltage output with a default 0.25V/decadescale factor. The device operates from a single +2.7Vto +11V supply or from dual ±2.7V to ±5.5V suppliesand is capable of measuring five decades of input currentacross a 10nA to 1mA range.The MAX4206's uncommitted op amp can be used fora variety of functions, including filtering noise, addingoffset, and adding additional gain. A 0.5V reference isalso included to generate an optional precision currentreference using an external resistor, which adjusts thelog intercept of the MAX4206. The output-offset voltageand the adjustable scale factor are also set using externalresistors.The MAX4206 is available in a space-saving 16-pin thinQFN package (4mm x 4mm x 0.8mm), and is specifiedfor operation over the -40°C to +85°C extended temperaturerange.ApplicationsAnalog Signal ProcessingMedical InstrumentationPhotodiode Current MonitoringPortable Instrumentation

The MAX4210/MAX4211 low-cost, low-power, high-sidepower/current monitors provide an analog output voltageproportional to the power consumed by a load bymultiplying load current and source voltage. TheMAX4210/MAX4211 measure load current by using ahigh-side current-sense amplifier, making them especiallyuseful in battery-powered systems by not interferingwith the ground path of the load.The MAX4210 is a small, simple 6-pin power monitorintended for limited board space applications. TheMAX4210A/B/C integrate an internal 25:1 resistor-dividernetwork to reduce component count. The MAX4210D/E/Fuse an external resistor-divider network for greater designflexibility.The MAX4211 is a full-featured current and power monitor.The device combines a high-side current-senseamplifier, 1.21V bandgap reference, and two comparatorswith open-drain outputs to make detector circuitsfor overpower, overcurrent, and/or overvoltage conditions.The open-drain outputs can be connected topotentials as high as 28V, suitable for driving high-sideswitches for circuit-breaker applications.Both the MAX4210/MAX4211 feature three different current-sense amplifier gain options: 16.67V/V, 25.00V/V, and40.96V/V. The MAX4210 is available in 3mm x 3mm, 6-pinTDFN and 8-pin µMAX® packages and the MAX4211 isavailable in 4mm x 4mm, 16-pin thin QFN and 16-pinTSSOP packages. Both parts are specified for the -40°Cto +85°C extended operating temperature range.ApplicationsBaseband Analog MultipliersMeasurement InstrumentationOverpower Circuit BreakersPower-Level DetectorsPower-Supply DisplaysShort-Circuit ProtectionSmart Battery Packs/ChargersSmart Peripheral ControlVGA Circuits

The MAX4210/MAX4211 low-cost, low-power, high-sidepower/current monitors provide an analog output voltageproportional to the power consumed by a load bymultiplying load current and source voltage. TheMAX4210/MAX4211 measure load current by using ahigh-side current-sense amplifier, making them especiallyuseful in battery-powered systems by not interferingwith the ground path of the load.The MAX4210 is a small, simple 6-pin power monitorintended for limited board space applications. TheMAX4210A/B/C integrate an internal 25:1 resistor-dividernetwork to reduce component count. The MAX4210D/E/Fuse an external resistor-divider network for greater designflexibility.The MAX4211 is a full-featured current and power monitor.The device combines a high-side current-senseamplifier, 1.21V bandgap reference, and two comparatorswith open-drain outputs to make detector circuitsfor overpower, overcurrent, and/or overvoltage conditions.The open-drain outputs can be connected topotentials as high as 28V, suitable for driving high-sideswitches for circuit-breaker applications.Both the MAX4210/MAX4211 feature three different current-sense amplifier gain options: 16.67V/V, 25.00V/V, and40.96V/V. The MAX4210 is available in 3mm x 3mm, 6-pinTDFN and 8-pin µMAX® packages and the MAX4211 isavailable in 4mm x 4mm, 16-pin thin QFN and 16-pinTSSOP packages. Both parts are specified for the -40°Cto +85°C extended operating temperature range.ApplicationsBaseband Analog MultipliersMeasurement InstrumentationOverpower Circuit BreakersPower-Level DetectorsPower-Supply DisplaysShort-Circuit ProtectionSmart Battery Packs/ChargersSmart Peripheral ControlVGA Circuits