Analog Devices Inc./Maxim Integrated

The MAX14918 and MAX14918A are quad 700mA lowside switches for industrial applications. Each device features four 140mΩ (typ) on-resistance (RON) switches with integrated ±1.2kV/42Ω surge protection. Two or more outputs can be connected in parallel to provide higher load current.The maximum load current is actively limited and is resistor settable between 100mA (typ) and 900mA (typ). For load that draws high inrush current, the MAX14918 and MAX14918A have the inrush mode which provides 2x current after switch turn-on for 10ms (min).The MAX14918 has an SPI allowing control of multiple MAX14918 devices through a common daisy-chained interface for high channel-count applications, minimizing galvanic isolation channels. Per-channel diagnostics are returned on the serial data output (SDO). Data corruption on the serial data input (SDI) is automatically detected and signaled on theSPIFLToutput.The MAX14918A offers a pin-based switch control with a latch option (LATCHEN) which allows sharing of the four IN_ control signals among multiple MAX14918A devices.Slew rate control provides controlled turn-on edge for reducing electromagnetic interference or EMI emissions. Simultaneously, a globalDIScontrol signal allows disabling of all OUT_ switches quickly.The integrated 5V low dropout (LDO) regulator in the MAX14918 and MAX14918A can be used to power external isolators or other logic circuitry.APPLICATIONSIndustrial Digital OutputsRelay and Solenoid DriversProgrammable Logic Controllers and Distributed Control SystemsMotor ControlIndustrial/Process/Building Automation

The MAX14918 and MAX14918A are quad 700mA lowside switches for industrial applications. Each device features four 140mΩ (typ) on-resistance (RON) switches with integrated ±1.2kV/42Ω surge protection. Two or more outputs can be connected in parallel to provide higher load current.The maximum load current is actively limited and is resistor settable between 100mA (typ) and 900mA (typ). For load that draws high inrush current, the MAX14918 and MAX14918A have the inrush mode which provides 2x current after switch turn-on for 10ms (min).The MAX14918 has an SPI allowing control of multiple MAX14918 devices through a common daisy-chained interface for high channel-count applications, minimizing galvanic isolation channels. Per-channel diagnostics are returned on the serial data output (SDO). Data corruption on the serial data input (SDI) is automatically detected and signaled on theSPIFLToutput.The MAX14918A offers a pin-based switch control with a latch option (LATCHEN) which allows sharing of the four IN_ control signals among multiple MAX14918A devices.Slew rate control provides controlled turn-on edge for reducing electromagnetic interference or EMI emissions. Simultaneously, a globalDIScontrol signal allows disabling of all OUT_ switches quickly.The integrated 5V low dropout (LDO) regulator in the MAX14918 and MAX14918A can be used to power external isolators or other logic circuitry.APPLICATIONSIndustrial Digital OutputsRelay and Solenoid DriversProgrammable Logic Controllers and Distributed Control SystemsMotor ControlIndustrial/Process/Building Automation

The MAX14919/MAX14919A industrial-protected quad-channel lowside switch features 140mΩ (typ) on-resistance (RON) per channel with integrated ±1kV/42Ω surge protection for robust operation.Resistor-settable accurate current limiting provides guaranteed operating currents in the range of 100mA to 800mA. Loads that draw large activation or inrush currents are supported using the 2x inrush load-current option. The outputs can be connected in parallel to achieve higher load currents. The four switches are pin-controlled to allow for simple and fast switching of up to 500kHz.The MAX14919/MAX14919A features reverse current detection. The MAX14919 implements reverse-current protection by driving an external FET for non-capacitive loads. The MAX14919A has reverse current indication.Inductive loads are turned off rapidly using the internal high-voltage clamps. The switches are short-circuit and overload protected.The MAX14919/MAX14919A quad low-side switch is available in a 6.5mm x 6.4mm footprint, 20-TSSOP package and a 4mm x 5mm footprint 20-TQFN package specified over the -40°C to +125°C operating temperature range.ApplicationsIndustrial Digital OutputsRelay and Solenoid DriversPLC and DCS SystemsMotor Control

The MAX14919/MAX14919A industrial-protected quad-channel lowside switch features 140mΩ (typ) on-resistance (RON) per channel with integrated ±1kV/42Ω surge protection for robust operation.Resistor-settable accurate current limiting provides guaranteed operating currents in the range of 100mA to 800mA. Loads that draw large activation or inrush currents are supported using the 2x inrush load-current option. The outputs can be connected in parallel to achieve higher load currents. The four switches are pin-controlled to allow for simple and fast switching of up to 500kHz.The MAX14919/MAX14919A features reverse current detection. The MAX14919 implements reverse-current protection by driving an external FET for non-capacitive loads. The MAX14919A has reverse current indication.Inductive loads are turned off rapidly using the internal high-voltage clamps. The switches are short-circuit and overload protected.The MAX14919/MAX14919A quad low-side switch is available in a 6.5mm x 6.4mm footprint, 20-TSSOP package and a 4mm x 5mm footprint 20-TQFN package specified over the -40°C to +125°C operating temperature range.ApplicationsIndustrial Digital OutputsRelay and Solenoid DriversPLC and DCS SystemsMotor Control

The MAX14920/MAX14921 battery measurement analog front-end devices accurately sample cell voltages and provide level shifting for primary/secondary battery packs up to 16 cells/+65V (max). The MAX14920 monitors up to 12 cells, while the MAX14921 monitors up to 16 cells. Both devices simultaneously sample all cell voltages, allowing accurate state-of-charge and source-resistance determination. All cell voltages are level shifted to ground reference with unity gain, simplifying external ADC data conversion.The devices have a low-noise, low-offset amplifier that buffers differential voltages of up to +5V, allowing monitoring of all common lithium-ion (Li+) cell technologies. The resulting cell voltage error is ±0.5mV.The devices’ high accuracy make them ideal for monitoring cell chemistries with very flat discharge curves, such as lithium-metal phosphate.Passive-cell balancing is supported by external FET drivers. Integrated diagnostics in the devices allow open-wire detection and undervoltage/overvoltage alarms. The devices are controlled by a daisy-chainable SPI interface.The MAX14920 is available in a 64-pin (10mm x 10mm) TQFP package with an exposed pad. The MAX14921 is available in an 80-pin (12mm x 12mm) TQFP package. Both devices are specified over the -40°C to +85°C extended temperature range.Applicationse-Transportation Energy PacksEnergy Storage PacksIndustrial Battery Backup SystemsTelecom Battery Backup Systems

The MAX1491/MAX1493/MAX1495 low-power, 3.5- and 4.5-digit, analog-to-digital converters (ADCs) with integrated liquid crystal display (LCD) drivers operate from a single 2.7V to 5.25V power supply. They include an internal reference, a high-accuracy on-chip oscillator, and a triplexed LCD driver. An internal charge pump generates the negative supply needed to power the integrated input buffer for single supply operation. The ADC is configurable for either a ±2V or ±200mV input range and it outputs its conversion results to an LCD. The MAX1491 is a 3.5-digit (±1999 count) device, and the MAX1493/MAX1495 are 4.5-digit (±19,999 count) devices.The MAX1491/MAX1493/MAX1495 do not require external-precision integrating or auto-zero capacitors, crystal oscillators, charge pumps, or other circuitry required with dual slope ADCs (commonly used in panel meter circuits). These devices also feature on-chip buffers for the differential signal and reference inputs, allowing direct interface with high-impedance signal sources. In addition, the MAX1491/MAX1493/MAX1495 use continuous internal offset calibration, and offer >100dB rejection of 50Hz and 60Hz line noise. The MAX1493/MAX1495 perform enhanced offset calibration at power-up. The MAX1495 also performs enhanced calibration on demand. Other features include data hold and peak hold, and a user programmable low-battery monitor.The MAX1493/MAX1495 come in a 32-pin 7mm x 7mm TQFP package, and the MAX1491 comes in 28-pin SSOP and 28-pin DIP packages. All devices in this family operate over the 0°C to +70°C commercial temperature range.ApplicationsDigital MultimetersDigital Panel MetersDigital VoltmetersHandheld meters

The MAX14930–MAX14932 are a family of 4-channel 2.75kVRMSdigital isolators utilizing Maxim’s proprietary process technology. The MAX14130–MAX14131 are 4-channel 1kVRMSdigital isolators in smaller footprint QSOP packages. For applications requiring 5kVRMSof isolation, see the MAX14934–MAX14936. The MAX14930–MAX14932 family transfers digital signals between circuits with different power domains at ambient temperatures up to +125°C.The MAX14930–MAX14932 family offers all three possible unidirectional channel configurations to accommodate any 4-channel design; including SPI, RS-232, RS-485, and digital I/O applications. For applications requiring bidirectional channels, such as I2C, see the MAX14933.Devices are available with data rates from DC up to 1Mbps, 25Mbps, or 150Mbps. Each device is also available in either a default high or default low configuration.The default is the state an output goes to when its input is unpowered. See the Product Selector Guide and Ordering Information for the suffixes associated with each option.Independent 1.71V to 5.5V supplies on each side of the isolator also make the devices suitable for use as level translators.The MAX14930–MAX14932 are available in both a 16-pin wide body (10.3mm x 7.5mm) and narrow body (9.9mm x 3.9mm) SOIC package. The MAX14130–MAX14131 are available in a 16-pin (6mm x 5mm) QSOP package. All devices are rated for operation at ambient temperatures of -40°C to +125°C.ApplicationsBattery ManagementFieldbus Communications for Industrial AutomationGeneral Multichannel Isolation ApplicationsIsolated SPI, RS-232, RS-485/RS-422Medical Systems