LTC2640HTS8-HM12#TRMPBF Integrated Circuits (ICs)

Reference Type:	External, Internal
Base Part Number:	LTC2640
Supplier Device Package:	TSOT-23-8
Package / Case:	SOT-23-8 Thin, TSOT-23-8
Operating Temperature:	-40°C ~ 125°C
Architecture:	--
INL/DNL (LSB):	±1, ±1 (Max)
Voltage - Supply, Digital:	5V
Voltage - Supply, Analog:	5V
Series:	--
Data Interface:	SPI
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	4.6µs (Typ)
Number of D/A Converters:	1
Number of Bits:	12
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Data Acquisition - Digital to Analog Converters (DAC)

The LTC2640HTS8-HM12#TRMPBF is a digital-to-analog converter (DAC) used for data acquisition and control. It is an 8-bit resolution-compatible voltage output DAC, specially designed for industrial and automotive temperature applications. The device has a 1.8V to 5.5V operating voltage and is equipped with a 12-bit programmable gain amplifier (PGA) for high linearity and resolution output.

Features

The key features of the LTC2640HTS8-HM12#TRMPBF include:• Programmable output voltage up to ± 10V • On-chip temperature sensor supports -40°C to +125°C operation • Low power consumption • On board reference circuit • Over-temperature monitoring • SPI Compatible interface • ±6 LSB Integral Nonlinearity (INL) error• Low offset voltage drift• High linearity and low noise

Functional Description

The basic building block of the LTC2640HTS8-HM12#TRMPBF is an 8-bit resolution-compatible voltage output DAC. It is equipped with a 12-bit programmable gain amplifier (PGA) with adjustable output ranges from 0V to ±10V. This DAC features low power consumption, a high-accuracy temperature sensor integrated on-chip, on-chip temperature compensation, and on-board reference circuitry. The device can be programmed via a SPI compatible interface and provides an external offset adjustment facility.The PGA allows for high linearity and resolution output of the DAC. In addition, the reference voltage is adjusted using an external transformer, which adjusts the temperature of the operating environment of the DAC. The offset adjustment circuit helps reduce the error over the entire temperature range and is especially beneficial during operation in automotive temperature environments.The device also features over-temperature monitoring, with the option of setting a temperature threshold. If the device reaches or exceeds the set temperature threshold, an alert is sent to the user to take appropriate action.In addition to its data acquisition capabilities, the LTC2640HTS8-HM12#TRMPBF is also suitable for use in control applications such as pulse- width modulation (PWM) and pulse density modulation (PDM). It can be used in motor speed control, LEDlighting, and similar control applications due to its low power consumption and fast response time.

Applications

The LTC2640HTS8-HM12#TRMPBF is well suited for a variety of applications, including automotive temperature sensing, aerospace and industrial temperature sensing, and medical imaging medical monitoring, as well as motor speed control, LED control, and automated test equipment. It is also suitable for data conversion applications such as ADC driver, multi-channel serial data streamers, and temperature monitoring systems.

Conclusion

The LTC2640HTS8-HM12#TRMPBF is an 8-bit resolution-compatible voltage output DAC with a 12-bit programmable gain amplifier. It has a wide operating voltage range from 1.8V to 5.5V and is specifically designed for industrial and automotive temperature applications. It features low power consumption, an on-chip temperature sensor, on-board reference circuit, an external offset adjustment circuit, and over-temperature monitoring. The device is suitable for a variety of data acquisition and control applications and can be used for motor speed control, LED control, and medical imaging medical monitoring.

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