ADS8361 data acquisition module 16-bit ADC analog-to-digital converter 500KSPS 4-channel fully differential -87652

Module parameters

Parameter name；Parameter value；remarks

Module model；ADS8361

Module type；Fully differential analog-to-digital conversion module；ADC

Module power supply；5V

Static power consumption；30mA；For reference only

Communication protocol；SPI Serial

Communication level；3.3V

Number of input channels；4 differential channels

Reference voltage (VREF)；Default internal 2.5V；External input reference of solderable SOT-23 packaging chip

Input range (must be met at the same time)；0~5V；Input voltage to GND

Input range (must be met at the same time)；±VREF；(IN+)-(IN-)

Resolving power；16-bit

Maximum chip sampling rate；500kSPS；Total throughput

Module Provider Routine；STM32F103RBT6；Analog SPI

Module features；Total difference

Module application；varied；Motor control, multi-axis positioning system, three-phase power control

Module weight；20g；For reference only

PCB size；50×50；long × Width (mm)

Module interface；3.81-8P socket, XH2.54 double-row pin

Module description

ADS8361 is a dual-channel, 16-bit, 500kSPS, analog-to-digital (A/D) converter with four fully differential input channels, divided into two pairs, for high-speed synchronous signal acquisition. The input of the sample-and-hold amplifier is full differential input, and maintains differential with the input of the A/D converter. This provides excellent common mode rejection of 80dB at 50kHz, which is very important in high noise environment.

Precautions for module use

(1) The module is a low-power module. It is recommended that the power supply should not exceed 5.25V.

(2) Since the module is a high-precision device, it is recommended to use linear power supply to avoid unnecessary interference.

(3) It is recommended that the input and output signal lines be as short as possible, and noise signals may be introduced if they are too long. Poor contact or poor quality wire may cause signal attenuation or excessive noise.

(4) The delivered code is only used for the main control panel of our store. The program notes are complete, and the program is not explained. Functions other than baby details display need to be developed independently.

(5) If it is necessary to test the function of the module simply, it is recommended to use it with the control board of the store. After the correct wiring, the power supply to the control board can realize signal acquisition and display.

FAQ

Q: Can the module input negative voltage?

A: No, the input voltage range to GND is 0 to 5V, and the differential mode voltage range is not more than ± VREF (((IN+) - (IN -)).

Q: Is the maximum 65535? How to convert to voltage?

A: No, the highest ADC bit of ADS8361 is the sign bit- 32768 ～ 32767 correspond to - VREF ～+VREF.