LTC2635HMSE-HMI10#TRPBF

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The LTC2635HMSE-HMI10#TRPBF is a digitally-programmable, low-power 10-bit voltage output digital-to-analog converter (DAC) from Linear Technology. It is a member of the LTC2635 family, which includes 16-bit DACs with a variety of characteristics.

The 10-bit output resolution of the LTC2635HMSE-HMI10#TRPBF has a full-scale output of 1.8V. The device uses a 6-wire interface for programming, which consists of a serial clock (SCLK), chip select (CS), data input (DIN), a latch inhibit (LIN), data output (DOUT) and an output enable (OE) line. The programming consists of a 16-bit command word and a 8-bit data word.

The output range of the LTC2635HMSE-HMI10#TRPBF is adjustable via a separate external reference voltage. The device operates over an extended temperature range of -40°C to +81°C, ideal for automotive and industrial applications. The solid state design of the DAC eliminates any need for potentiometers or mechanical pots.

Application Field

The LTC2635HMSE-HMI10#TRPBF provides excellent performance and a wide range of applications in the industrial and automotive fields. Some of the many possible applications include:

• Application control
• Automated test equipment
• Power supply sequencing
• Motor control
• Data acquisition
• Communication timing
• Analog amplifiers
• Portable medical devices
• Programmable light dimming

Working Principle

The LTC2635HMSE-HMI10#TRPBF provides a 10-bit output resolution and operates with a minimum supply voltage of 4.5V and a maximum of 5.5V. The digital 10-bit output code is sent to the DAC in a single 16-bit command word sent via the 6-wire interface, together with an external reference voltage. The voltage generated is equal to the reference voltage multiplied by the binary fraction of the code.

The DAC has a low-power, low-noise reference input which can be set to an external reference for improved accuracy or a separate power supply for higher drive current. The output driver is capable of sourcing up to 10mA of load current and sinking up to 8mA of load current.

The LTC2635HMSE-HMI10#TRPBF has input protection from ESD and overvoltage transients, and the output range is protected by an over-voltage and over-current filter. The DAC also features power-down mode for reduced power consumption when not in use. It also has a programming latency of less than 1µs and an SPI-compatible serial interface.

The LTC2635HMSE-HMI10#TRPBF is a reliable and accurate solution for fast and accurate digital-to-analog conversion in industrial and automotive applications. The device includes a low-power, low-noise reference input, input protection and an output driver capable of sourcing and sinking 10mA of load current.

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