/*!
LTC2326-16: 16-Bit, 250ksps Pseudo-differential input ADC.
LTC2326-18: 18-Bit, 250ksps Pseudo-differential input ADC.
LTC2327-16: 16-Bit, 500ksps Pseudo-differential input ADC
LTC2327-18: 18-Bit, 500ksps Pseudo-differential input ADC
LTC2328-16: 16-Bit, 1Msps Pseudo-differential input ADC
LTC2328-18: 18-Bit, 1Msps Pseudo-differential input ADC
LTC2336-18: 18-Bit, 250ksps Fully-differential input ADC
LTC2337-18: 18-Bit, 500ksps Fully-differential ADC
LTC2338-18: 18-Bit, 1Msps Fully-differential input ADC

@verbatim

The following parts (DUT) are pin-compatible, 16/18-bit A/D converters with serial I/O, and an internal reference:
LTC2326-16: 16-Bit, 250ksps Pseudo-differential input ADC.
LTC2326-18: 18-Bit, 250ksps Pseudo-differential input ADC.
LTC2327-16: 16-Bit, 500ksps Pseudo-differential input ADC
LTC2327-18: 18-Bit, 500ksps Pseudo-differential input ADC
LTC2328-16: 16-Bit, 1Msps Pseudo-differential input ADC
LTC2328-18: 18-Bit, 1Msps Pseudo-differential input ADC
LTC2336-18: 18-Bit, 250ksps Fully-differential input ADC
LTC2337-18: 18-Bit, 500ksps Fully-differential ADC
LTC2338-18: 18-Bit, 1Msps Fully-differential input ADC

Example Code:

Read ADC input.

    LTC2338_read(LTC2338_CS, &adc_code);   // Throws out last reading
    LTC2338_read(LTC2338_CS, &adc_code);   // Obtains the current reading and stores to adc_code variable

    // Convert adc_code to voltage
    adc_voltage = LTC2338_code_to_voltage(adc_code, vref);

@endverbatim

http://www.linear.com/product/LTC2326-16
http://www.linear.com/product/LTC2326-18
http://www.linear.com/product/LTC2327-16
http://www.linear.com/product/LTC2327-18
http://www.linear.com/product/LTC2328-16
http://www.linear.com/product/LTC2328-18
http://www.linear.com/product/LTC2336-18
http://www.linear.com/product/LTC2337-18
http://www.linear.com/product/LTC2338-18

http://www.linear.com/product/LTC2326-16#demoboards
http://www.linear.com/product/LTC2326-18#demoboards
http://www.linear.com/product/LTC2327-16#demoboards
http://www.linear.com/product/LTC2327-18#demoboards
http://www.linear.com/product/LTC2328-16#demoboards
http://www.linear.com/product/LTC2328-18#demoboards
http://www.linear.com/product/LTC2336-18#demoboards
http://www.linear.com/product/LTC2337-18#demoboards
http://www.linear.com/product/LTC2338-18#demoboards


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*/

/*! @file
    @ingroup LTC2338
    Header for LTC2338: 16/18-bit 1Msps ADC
*/

#ifndef LTC2338_H
#define LTC2338_H

#include <SPI.h>

//! Define the SPI CS pin
#ifndef LTC2338_CS
#define LTC2338_CS QUIKEVAL_CS
#endif

//! @name LTC2338 Channel Address
//! @{
// Channel Address
#define LTC2338_ADDRESS             0x00
//!@}


//! Reads the LTC2338 and returns 32-bit data in 2's complement format
//! @return void
void LTC2338_read(uint8_t cs,           //!< Chip Select Pin
                  int32_t *ptr_adc_code    //!< Returns code read from ADC (from previous conversion)
                 );


//! Calculates the LTC2338 input voltage given the binary data and lsb weight.
//! @return Floating point voltage
float LTC2338_code_to_voltage(int32_t adc_code,                   //!< Raw ADC code
                              float vref              //!< Reference voltage
                             );

#endif  //  LTC2338_H