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Linduino
1.3.0
Linear Technology Arduino-Compatible Demonstration Board
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LTC2642: 16-/14-/12-Bit VOUT DAC with SPI Interface LTC2641: 16-/14-/12-Bit VOUT DAC with SPI Interface. More...
LTC2642: 16-/14-/12-Bit VOUT DAC with SPI Interface LTC2641: 16-/14-/12-Bit VOUT DAC with SPI Interface.
The LTC2641/LTC2642 are families of 16-,14 and 12-bit unbuffered voltage output DACs. These DACs operate from 2.7V to 5.5V supply and are monotonic over temperature. They communicate via SPI interface. 16 bits of data are loaded through DIN after a high-to-low transition of CS (MSB first). After 16 data bits have been loaded into the serial input register, a low-to-high transition on CS transfers the data to the 16-bit DAC latch, updating the DAC output. For the 14-bit DACs, (LTC2641-14/LTC2642-14), the MSB remains in the same (left-justified) position in the input 16-bit data word. Therefore, two “don’t-care” bits must be loaded after the LSB, to make up the required 16 data bits. Similarly, for the 12-bit family members(LTC2641-12/LTC2642-12) four “don’t-care” bits must follow the LSB.
http://www.linear.com/product/LTC2642 http://www.linear.com/product/LTC2641
http://www.linear.com/product/LTC2642#demoboards http://www.linear.com/product/LTC2641#demoboards
Copyright 2018(c) Analog Devices, Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Header for LTC2642: 16-/14-/12-Bit VOUT DAC with SPI Interface
Definition in file LTC2642.h.
Go to the source code of this file.
Functions | |
void | LTC2642_write (uint8_t cs, uint16_t data) |
Writes the 16-bit data into the DAC. More... | |
float | LTC2642_code_to_voltage (uint16_t data, float reference_voltage, uint8_t range) |
Calculates the output voltage from the given digital code and reference voltage. More... | |
uint16_t | LTC2642_voltage_to_code (float voltage, float reference_voltage, uint8_t range) |
Calculates the 16 bit data code from voltage. More... | |
Macros | |
#define | LTC2642_CS QUIKEVAL_CS |
Define the SPI CS pin. More... | |
#define | UNIPOLAR 1 |
#define | BIPOLAR 2 |
float LTC2642_code_to_voltage | ( | uint16_t | data, |
float | reference_voltage, | ||
uint8_t | range | ||
) |
Calculates the output voltage from the given digital code and reference voltage.
data | 16-bit digital input data |
reference_voltage | Reference voltage |
range | Unipolar/Bipolar |
Definition at line 107 of file LTC2642.cpp.
uint16_t LTC2642_voltage_to_code | ( | float | voltage, |
float | reference_voltage, | ||
uint8_t | range | ||
) |
Calculates the 16 bit data code from voltage.
voltage | Analog voltage to be converted into code |
reference_voltage | Reference Voltage |
range | Unipolar/Bipolar |
Definition at line 92 of file LTC2642.cpp.
void LTC2642_write | ( | uint8_t | cs, |
uint16_t | data | ||
) |
Writes the 16-bit data into the DAC.
cs | Chip Select Pin |
data | 16-bit digital input data |
Definition at line 85 of file LTC2642.cpp.
#define LTC2642_CS QUIKEVAL_CS |