The DS1803 addressable dual digital potentiometer features two independently controlled 256-positionpotentiometers. Device control is achieved through a 2-wire serial interface. Three address pins allow upto 8 DS1803's to share the same 2-wire interface. The exact wiper position of each potentiometer can bewritten or read. The DS1803 is available in a 16-pin DIP, 16-pin SO, and 14-pin TSSOP package. Thedevice is available in three standard resistance values: 10kΩ, 50kΩ, and 100kΩ and is specified over theindustrial temperature range.

The DS1807 consists of two addressable potentiometers having a logarithmic resistor characteristic over the device range. Each potentiometer provides 64 wiper positions with a 1dB-per-step resolution. The device also provides greater than 90dB of attenuation in the mute position. Zero-crossing detection is a primary feature of the DS1807 allowing for pop-free wiper transitions. Wiper positions are read and controlled via a 2-wire interface, which allows up to 8 devices to be controlled on the same 2-wire bus.The DS1802 provides high-performance audio volume and tone control with processor addressability. It replaces mechanical potentiometers with digital accuracy and reliability while its low-power circuits consume very little current.

The MAX3171/MAX3173 are three-driver/three-receiver multiprotocol transceivers that operate from a single +3.3V supply. The MAX3171/MAX3173, along with the MAX3170 and MAX3172/MAX3174, form a complete software-selectable data terminal equipment (DTE) or data communications equipment (DCE) interface port that supports V.28 (RS-232) and V.10/V.11 (RS-449, V.36, EIA-530, EIA-530-A, X.21, RS-423) protocols. The MAX3171/MAX3173 transceivers carry the serial interface control signaling; the MAX3170 transceivers carry the clock and data signals. The MAX3172/MAX3174 have an extra transceiver for applications requiring four transceivers for control signaling.An internal charge pump and proprietary low-dropout transmitter output stage allow V.28, V.11, and V.10 compliant operation from a single +3.3V supply. A no-cable mode is entered when all mode pins (M0, M1, and M2) are pulled high or left unconnected. In no-cable mode, supply current decreases to 2mA and all transmitter and receiver outputs are disabled (high impedance). Short-circuit limiting and thermal-shutdown circuits protect the drivers against excessive power dissipation.The MAX3171 features 10µs deglitching on the V.10/V.11/V.28 receiver inputs. The MAX3173 is available for applications that do not require deglitching on the serial handshake signals.These parts require only four surface-mount capacitors for charge-pump operation in addition to supply bypassing.ApplicationsCSUs/DSUsData NetworkingData RoutersPCI CardsTelecommunications

The MAX4548/MAX4549 serial-interface, programmable, triple 3x2 audio/video crosspoint switches are ideal for multimedia applications. The devices include three crosspoint switch matrices, each containing three inputs and two outputs. To improve off-isolation, each switch matrix has a shunt input and each output is selectively programmable for clickless or regular-mode operation. A selectable set of internal resistive voltage dividers supplies DC bias for each output when using AC-coupled inputs. To improve crosstalk, the voltage dividers include four externally accessible bypass points.The MAX4548/MAX4549 feature 35Ω max on-resistance, 7Ω on-resistance matching between channels, 5Ω on-resistance flatness, and 0.07% total harmonic distortion (THD). Additionally, they feature off-isolation of -85dB at 20kHz and -72dB at 10MHz, with crosstalk of -85dB at 20kHz and -55dB at 10MHz. The MAX4548 uses a 2-wire I²-compatible serial interface, while the MAX4549 uses a 3-wire SPI™/QSPI™/MICROWIRE™-compatible serial interface. These parts are available in 36-pin SSOP packages and are specified for the extended (-40°C to +85°C) operating range.ApplicationsHigh-End Audio SystemsPC Multimedia BoardsSecurity SystemsSet-Top BoxesVideo Conferencing Systems

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

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