Linduino  1.3.0
Linear Technology Arduino-Compatible Demonstration Board

LTC2376-20: 20-Bit, 250Ksps ADC LTC2377-20: 20-Bit, 500Ksps ADC LTC2378-20: 20-Bit, 1Msps ADC. More...

Detailed Description

LTC2376-20: 20-Bit, 250Ksps ADC LTC2377-20: 20-Bit, 500Ksps ADC LTC2378-20: 20-Bit, 1Msps ADC.

The following parts (DUT) are pin-compatible, 20-bit A/D converters with serial I/O, and an internal reference:
LTC2376-20: 20-Bit, 250Ksps ADC
LTC2377-20: 20-Bit, 500Ksps ADC
LTC2378-20: 20-Bit, 1Msps ADC

The DUTs typically draw only 8.4 mA from a single 2.5V supply. The automatic nap and sleep modes benefit power sensitive applications.

The DUTs DC performance is outstanding with a +/-0.5 ppm INL specification and
no missing codes over temperature. The signal-to-noise ratio (SNR) for the LTC2378 is typically 104 dB, with the internal reference.

Example Code:

Read ADC input.

    LTC2378_read(LTC2378_CS, &adc_code);   // Throws out last reading
    LTC2378_read(LTC2378_CS, &adc_code);   // Obtains the current reading and stores to adc_code variable

    // Convert adc_code to voltage
    adc_voltage = LTC2378_code_to_voltage(adc_code, vref);

http://www.linear.com/product/LTC2376-20 http://www.linear.com/product/LTC2377-20 http://www.linear.com/product/LTC2378-20

http://www.linear.com/product/LTC2376-20#demoboards http://www.linear.com/product/LTC2377-20#demoboards http://www.linear.com/product/LTC2378-20#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:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  • Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
  • The use of this software may or may not infringe the patent rights of one or more patent holders. This license does not release you from the requirement that you obtain separate licenses from these patent holders to use this software.
  • Use of the software either in source or binary form, must be run on or directly connected to an Analog Devices Inc. component.

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 LTC2378: 16/18/20-bit 1Msps ADC

Definition in file LTC2378.h.

Go to the source code of this file.

Functions

void LTC2378_read (uint8_t cs, int32_t *ptr_adc_code)
 Reads the LTC2378 and returns 32-bit data in 2's complement format. More...
 
float LTC2378_code_to_voltage (int32_t adc_code, uint8_t gain_compression, float vref)
 Calculates the LTC2378 input voltage given the binary data and lsb weight. More...
 

Macros

#define LTC2378_CS   QUIKEVAL_CS
 Define the SPI CS pin. More...
 
LTC2378 Channel Address
#define LTC2378_ADDRESS   0x00
 

Function Documentation

◆ LTC2378_code_to_voltage()

float LTC2378_code_to_voltage ( int32_t  adc_code,
uint8_t  gain_compression,
float  vref 
)

Calculates the LTC2378 input voltage given the binary data and lsb weight.

Returns
Floating point voltage
Parameters
adc_codeRaw ADC code
vrefReference voltage

Definition at line 104 of file LTC2378.cpp.

◆ LTC2378_read()

void LTC2378_read ( uint8_t  cs,
int32_t *  ptr_adc_code 
)

Reads the LTC2378 and returns 32-bit data in 2's complement format.

Returns
void
Parameters
csChip Select Pin
ptr_adc_codeReturns code read from ADC (from previous conversion)

Definition at line 82 of file LTC2378.cpp.

Macro Definition Documentation

◆ LTC2378_ADDRESS

#define LTC2378_ADDRESS   0x00

Definition at line 91 of file LTC2378.h.

◆ LTC2378_CS

#define LTC2378_CS   QUIKEVAL_CS

Define the SPI CS pin.

Definition at line 85 of file LTC2378.h.