LTC2640.cpp File Reference

Library for LTC2640: Single 12-/10-/8-Bit Rail-to-Rail DACs with 10ppm/C Reference. More...

Detailed Description

Library for LTC2640: Single 12-/10-/8-Bit Rail-to-Rail DACs with 10ppm/C Reference.

Definition in file LTC2640.cpp.

Go to the source code of this file.

Functions
void	LTC2640_write (uint8_t cs, uint8_t dac_command, uint16_t dac_code)
	Write the dac_command and 16-bit dac_code to the LTC2640. More...
uint16_t	LTC2640_voltage_to_code (float dac_voltage, float LTC2640_lsb, int16_t LTC2640_offset)
	Calculate the LTC2640 DAC code given the desired output voltage. More...
float	LTC2640_code_to_voltage (uint16_t dac_code, float LTC2640_lsb, int16_t LTC2640_offset)
	Calculate the LTC2640 DAC output voltage given the DAC code, offset, and LSB value. More...
void	LTC2640_calibrate (uint16_t dac_code1, uint16_t dac_code2, float voltage1, float voltage2, float *LTC2640_lsb, int16_t *LTC2640_offset)
	Calculate the LTC2640 offset and LSB voltages given two measured voltages and their corresponding codes. More...

Function Documentation

LTC2640_calibrate()

void LTC2640_calibrate	(	uint16_t	dac_code1,
		uint16_t	dac_code2,
		float	voltage1,
		float	voltage2,
		float *	LTC2640_lsb,
		int16_t *	LTC2640_offset
	)

Calculate the LTC2640 offset and LSB voltages given two measured voltages and their corresponding codes.

Returns

Void

Parameters

dac_code1	First DAC code
dac_code2	Second DAC code
voltage1	First voltage
voltage2	Second voltage
LTC2640_lsb	Returns resulting LSB (volts)
LTC2640_offset	Returns resulting Offset (volts)

Definition at line 123 of file LTC2640.cpp.

LTC2640_code_to_voltage()

float LTC2640_code_to_voltage	(	uint16_t	dac_code,
		float	LTC2640_lsb,
		int16_t	LTC2640_offset
	)

Calculate the LTC2640 DAC output voltage given the DAC code, offset, and LSB value.

Returns

Calculated voltage

Parameters

dac_code	DAC code
LTC2640_lsb	LSB value (volts)
LTC2640_offset	Offset (volts)

Definition at line 115 of file LTC2640.cpp.

LTC2640_voltage_to_code()

uint16_t LTC2640_voltage_to_code	(	float	dac_voltage,
		float	LTC2640_lsb,
		int16_t	LTC2640_offset
	)

Calculate the LTC2640 DAC code given the desired output voltage.

Returns

Code to send to DAC

Parameters

dac_voltage	Voltage to send to DAC
LTC2640_lsb	LSB value (volts)
LTC2640_offset	Offset (volts)

Definition at line 101 of file LTC2640.cpp.

LTC2640_write()

void LTC2640_write	(	uint8_t	cs,
		uint8_t	dac_command,
		uint16_t	dac_code
	)

Write the dac_command and 16-bit dac_code to the LTC2640.

The dac_code must be left aligned before calling this function.

Returns

Void

Parameters

cs	Chip Select Pin
dac_command	Command code nibble
dac_code	12-bit DAC code, left justified

Definition at line 87 of file LTC2640.cpp.