MAX1300AEUG solution verification board

MAX1300AEUG solution verification board, used to verify the ADC of mall number: C143332.

The following data comes from Maxim's official website

> MAX1300/MAX1301 multi-range, low-power, 16-bit, successive approximation analog-to-digital converter (ADC), powered by a single +5V power supply, with a throughput of up to 115ksps. An independent digital power supply allows connection to a 2.7V to 5.25V system via an SPI/QSPI™/MICROWIRE™ compatible serial interface. Partial shutdown mode reduces the supply current to 1.3mA (typical). Full shutdown mode further reduces the supply current to 1µA (typical).
>
> MAX1300 provides 8 (single-ended) or 4 (true differential) analog input channels. MAX1301 provides 4 (single-ended) or 2 (true differential) analog input channels. Each analog input channel is independently software programmable to seven single-ended input ranges [0 to (3 × VREF)/2, (-3 × VREF)/2 to 0, 0 to 3 × VREF, -3 × VREF to 0, (±3 × VREF)/4, (±3 × VREF)/2, ±3 × VREF] and three differential input ranges [(±3 × VREF)/2, ±3 × VREF, ±6 × VREF].
>
> An on-chip +4.096V reference enables a compact, convenient ADC solution. The MAX1300/MAX1301 also accept an external reference source from 3.800V to 4.136V.
>
> The MAX1300 is available in a 24-pin TSSOP package, while the MAX1301 is available in a 20-pin TSSOP package. Each device is specified over the -40°C to +85°C temperature range.
> Key Features
>
>
> * Software-programmable input range for each channel
>
> * Single-ended input ranges
>
> * 0 to (3 x VREF)/2, (-3 x VREF)/2 to 0, 0 to 3 x VREF, -3 x VREF to 0, (±3 x VREF)/4, (±3 x VREF)/2, and ±3 x VREF
> * Differential input ranges
>
> * (±3 x VREF)/2, ±3 x VREF, and ±6 x VREF
> * 8 single-ended or 4 differential analog inputs (MAX1300)
>
> * 4 single-ended or 2 differential analog inputs (MAX1301)
>
> * ±16.5V overvoltage-tolerant inputs
>
> * Internal or external reference
>
> * 115ksps maximum sampling rate
>
> * Single +5V supply operation
>
> * 20-/24-pin TSSOP package

This ADC can sample negative voltages and does not require a negative supply.
This component uses SPI interface with a sampling rate of 193K (audio sampling rate). It is preliminarily estimated to be used for collecting music.
I used this chip to make a solution verification board. There is a differential input on the board (using a BNC connector to connect the oscilloscope probe).
At the same time, two simulated temperature sensors [mutual verification] and a light sensor are placed on the board.
![TIM screenshot 20200604000038.png] The board is equipped with STM32F030 and CH340E [used to communicate with the upper computer software].

At the same time, I designed a Labview test program for this development board
to test this board, and this program can also be used to test other boards [to be modified] (not mature yet, not open source program yet).
At the same time, I designed an STM32 program with Arduino (used to communicate with the upper computer, open source [because it has not been tested yet, after the board is made and the test is completed, the link will be put on GitHub for everyone to use, only the compiled file is put here])
![TIM screenshot 20200603234854.png] SN is transmitted from the lower computer through the serial port. The lower computer software will start collecting data only after receiving the power-on command issued by the upper computer [start].
Except for the continuous sampling channel, all data is updated every 0.5s. The continuous sampling channel (CH0/1 differential input) has a sampling rate of 193ksps.

`#include `
`#include `
`void setup()`
`{`
`SPI.begin();`
`SPI.setClockDivider(SPI_CLOCK_DIV8);`
`digitalWrite(2, HIGH);`
`Serial1.begin(9600);//This speed actually limits the sampling rate of this system. It is recommended to increase the baud rate as much as possible when possible. `
`}`

`void loop()`
`{`
`CAN_Te.init(0x00);`
`Serial.write("SN:4B35A41BEA4F0");`
`for(int i = 0;i