TLV5638CDR

Reference Type:	External, Internal
Base Part Number:	TLV5638
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C
Architecture:	String DAC
INL/DNL (LSB):	±1.7, ±0.4
Voltage - Supply, Digital:	2.7 V ~ 3.3 V, 5V
Voltage - Supply, Analog:	2.7 V ~ 3.3 V, 5V
Series:	--
Data Interface:	SPI
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	7µs
Number of D/A Converters:	2
Number of Bits:	12
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Data acquisition is the process of converting a physical signal into a digital form which can be used to analyze and control a system. Digital to analog converters (DACs) are used to convert a digital signal into an analog form and are used in many applications to control the behavior of a system. The TLV5638CDR is a versatile, low power digital-to-analog converter (DAC) that operates with low voltage and current. It is a 0 to 10V output digital to analog converter made for system applications requiring low current draw and cost. The TLV5638CDR provides power efficient operation in a tiny 8 pin footprint and is suitable for applications such as data acquisition, industrial process control, home automation and embedded applications.

Features and Functionality

The TLV5638CDR is a low power, low voltage (1.8V to 7.0V) digital-to-analog converter (DAC). It has a single 10V output and operates with a 200kHz constant current current source over the full 0V to 10V output range. It has a fast 500ns settling time and can provide dc precision as low as 0.1%. The DAC output is also rail-to-rail compliant and capable of sinking or sourcing up to 10mA.The TLV5638CDR also includes an internal 4-bit register and is programmable over an SPI-compatible interface, allowing for a maximum resolution of 14 bits. It can also be programmed for fast successive approximation, providing for high accuracy and speed. The device is also equipped with an internal temperature sensor, allowing for temperature compensation when operating in noisy or extreme operating environments.

Applications

The TLV5638CDR is suitable for many data acquisition and system control applications, including industrial process control, home automation, and embedded systems. The device is a voltage-output DAC, providing precision analog output (as low as 0.1%) with low power and small footprint.The on-chip temperature compensation helps to minimize drifts due to environmental changes and supply voltage variation, making the device suitable for applications in noisy and extreme operating environments. In addition, the high-speed SPI programming makes it suitable for applications requiring fast response times and accurate readings, such as motor speed control and flow control, as well as sensorless motor control and brushless DC motor drivers.The device is also suitable for audio applications, particularly when it is configured to use the internal 4-bit register for fast successive approximation conversion.

Working Principle

The TLV5638CDR is a 0 to 10V output, low power, digital-to-analog converter (DAC). It operates using a 200kHz constant current current source to convert digital values into analog values over the range 0V to 10V.The device operates by taking digital codes of up to 14-bits into an internal 4-bit register, which is then converted into an analog value. The device is programmable via a SPI-compatible interface, which allows the user to configure operating parameters such as the output voltage range, temperature compensation, and settling time.Once configured, the DAC outputs an analog signal based on the digital value sent to the device. This signal can then be used to control the behavior of a system. The TLV5638CDR is a low power, low voltage (1.8V to 7.0V) digital-to-analog converter (DAC). It provides power efficient operation, with a fast 500ns settling time and capable of sinking or sourcing up to 10mA. The device is suitable for applications such as data acquisition, industrial process control, and home automation. The on-chip temperature sensor allows for temperature compensation when operating in noisy or extreme operating environments, making it suitable for applications requiring fast and accurate readings. In addition, the internal 4-bit register can be programmed for fast successive approximation conversion, making it suitable for audio applications.

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