ADS1256 Module 24-bit ADC AD Module High Precision ADC Acquisition Data Acquisition Card Analog to Digital Converter
ADS1256 Module 24-bit ADC AD Module High Precision ADC Acquisition Data Acquisition Card Analog to Digital Converter image 1
ADS1256 Module 24-bit ADC AD Module High Precision ADC Acquisition Data Acquisition Card Analog to Digital Converter image 2
ADS1256 Module 24-bit ADC AD Module High Precision ADC Acquisition Data Acquisition Card Analog to Digital Converter image 3

ADS1256 Module 24-bit ADC AD Module High Precision ADC Acquisition Data Acquisition Card Analog to Digital Converter

US $26.82 -20%

US $22.35



The module has 24-bit resolution and 23-bit noise-free resolution. The regulator chip with low dropout and low noise and T high-performance reference source chip ensure the stable output of the module. It is a very reliable low-noise 24-bit AD converter including programmable digital filter and fourth-order -modulator△-∑.



ADS1256 module shipping list



Physical module + PDF schematic diagram + routine source code + after-sale technical support + electrostatic bag packaging + shockproof foam


(1) The module interface of our shop is clear and the performance is stable. Please perform functional verification under the corresponding experimental conditions in conjunction with the schematic diagram provided by our shop.

(2) The basic parameters of this module are in the details page, which provides PDF information of the module information and source code of the routine; no engineering files are provided, please make sure the buyer, if there are operational problems, you can consult customer service.

(3) Buyers, before using the module, please read the details page of this module to understand the power supply and use restrictions, to avoid damage to the module due to improper operation.

(4) The modules of our shop are guaranteed to provide real module parameters, functions and pictures, and all modules must be tested before they can be shipped.

Please contact customer service after purchase, we will send the module information to your mailbox.



Module parameters



Module model: ADS1256

Module type: analog-to-digital conversion module

Module power supply: DC5V

Module current: 15mA (MAX)

Module communication protocol: SPI serial

Module provides routines: STM32F103RBT6

Routine platform: STM32F103X-M3; KEIL5 version source code

Module control signal level: 3.3V

Module input voltage range: 0-5V

Input impedance: 1M ohm

ADC resolution digits: 24 bits; effective bits 18 bits

Sampling rate: 30KSPS; single channel does not switch up to 30K, the sampling rate decreases when using multiple channels

Number of input channels: 8-channel single-ended, 4-channel pseudo differential; time-sampling

Module input interface: 3.81-10PIN terminal

Reference voltage: external 2.5V; external input reference for soldered SOT-23 package

PGA mode: 7; 1x, 2x, 4x, 8x, 16x, 32x, 64x

Output mode: 8-channel data serial

Module features: multiple; low noise analog front end, optional digital filtering, up to 23 noise-free resolutions

Module application: multiple; industrial process control, motion signal acquisition, industrial signal acquisition

Module weight: 23g

Module specifications: 50 * 50 * 12; length * width * height-PCB size

Module interface type: 3.81-10PIN socket, XH2.54 double-row pin data interface

Measuring range:
Gin      rangea
1           ±5V
2          ±2.5V
4          ±1.25V
8          ±0.625V
16        ± 0.3125v
32       ± 0.1563V
64       ± 0.0781V
Chip characteristics:
*24 Bits, Lossless Code - All Data Rates and PGA Settings
*Up to 23 bits noise-free resolution
*Non-linearity (±0.0010%)
*Data Output Rate 30 kSPS
*Fast Channel Cycle - 18.6 Bit Noise Free (21.3 Significant Bit) at 1.45 kHz
*Single Conversion and Single Period Stability
*Flexible Input Multiplexer and Sensor Detection-
Four differential inputs (only ADS1256)
Eight single-ended inputs (only ADS1256)
*Chopper stabilized input buffer
*Low Noise PGA:27nV Input Reference Noise
*Self and System Calibration of All PGA Settings
*5V Voltage-withstanding SPI Compatible Serial Interface
*Analog power supply: 5V digital power supply: 1.8V to 3.6V
*Power consumption-
Low to 38MW in normal mode
-0.4mW Standby Mode
Note: The chip features are only for user selection reference. Non-modules have this feature.
Module description

ADS1256 is a very low noise 24-bit analog-to-digital converter. Provides a complete high-definition measurement solution for the most demanding applications. The converter includes a fourth-order modulator with a programmable digital filter. Flexible input multiplexing processes differential or single-ended signals and includes circuitry to verify the integrity of external sensors connected to the input. The optional input buffer greatly increases the input impedance and provides a low noise programmable gain amplifier (PGA) with a gain of 1 to 64 in binary. Programmable filters allow users to optimize noise-free up to 23bit resolution and a sampling rate of up to 30k per second. The converter provides a fast channel loop to measure multiple inputs; it can also perform word conversion in just one cycle. Communication is carried out via a SPI-compatible serial connection C that can be connected to the 2-wire. All PGA settings have an on-board calibration mechanism that corrects the offset and gain errors of itself and the system.

Precautions for using the module



(1) The module is a low-power module, and the power supply does not exceed 6V.

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

(3) The output signal line is recommended to be as short as possible, too long to easily introduce noise signals. Poor contact or poor quality wires may cause signal attenuation or excessive noise.

(4) The delivered code is only used for the supporting main control board; the microcontroller tutorial is not provided, and functions other than product details display need to be developed by yourself.

(5) If you need to simply test the function of the module, it is recommended to use it with the control board of our store. After the correct wiring, power the control board to achieve signal acquisition and display.

Frequently asked questions

Q: For example, if you give a voltage: 4.1234V, let it collect all the time. What is the result? Will the value jump?

A: The data must be beating. This is not determined by a single condition. The theoretical value can reach 0.1mv. Actual measurement: a better power supply can be stable at 1mv.

Q: Can ADS1256 directly transfer data to PLC?

A: Generally speaking, the PLC level is not compatible with the ADS1256 module. Our module is a 3.3V communication level. Generally, a single chip can be used for communication.

Q: Both AD7190 and ADS1256 are 24-bit ADCs, which are the same in many places. What is the difference in use? .

A: Generally speaking, AD7190 is more used in load cells or pressure sensors. The true differential between channels; ADS1256 is pseudo differential. The acquisition speed of ADS1256 is faster than that of AD7190.

Q: If I use ADS1256 and the matching main control board and use the USB port to supply power, I cannot collect a voltage of 5V?

A: Since the voltage of the universal USB port is lower than 5V, the power supply voltage of the ADS1256 chip will be less than 5V, so the voltage of 5V cannot be collected. It is recommended to use the DC interface, power supply above 5V, but not more than 5.5V , So that you can collect a 5V voltage.

Q: The small voltage signal collected by ADS1256 is inaccurate, and there is no value after using internal PGA; what is the situation?

A: The ADS1256 default is to open the internal BUFFER. BUFFER has a certain offset voltage, which will lead to inaccurate signal acquisition near 0 voltage. The program can be closed. The second is that the premise of using the internal PGA is to ensure that the amplified voltage If it is less than 5V, otherwise the magnification is too large and the value will not be collected.

Q: After the module is driven normally, the pins that are not connected to voltage show that there is voltage, is it normal? .

A: The module collects 8 channels at the same time by default. When no voltage is connected, the floating voltage on the pin is also collected. The pin can be directly grounded, which is 0 voltage.



About Elecdemo:

Elecdemonded in 2015 , Elecdemo is a well-established technology company that integrates supply , R & D , prodund sales , supporting agents , franchises , customization and bulk purchases . We are committed to provid our customers with the best electronic functional module products at the lowest price . We have a professional design and production team to providecustomer service to help our customers greatly improve the efficiency of development,learn and research.


About Transpiration:

1. Global shipping, (except for some countriesand APO/ FPO)

2. Import duties: Taxes are not included in theprice or shipping costs. Customs fees are the responsibility of the buyer.

3. If the package is not delivered within 30 days. please contact us. We will help you solve the problem.


About Delivery:

1. We will process the order in time after the payment is confirmed. Due to the difference in inventory status and time, we will choose to ship from our first warehouse for fast delivery.

2. We only send to the confirmed order address. Your order address must match your shipping address.

3.Service transit time is provided by the carrier, excluding weekends and holidays. Delivery time may vary, especially on holidays.


About Guarantee:

1.  manufacturers limited warrantyon defective items(excluding items damagedand/or misused after receipt). The accessory is backed by a 3 month warranty

2. The displayed image is taken in real time, but due to different production batches, thecolor may be different. The picture is for reference only, and the actual object is subjectto the final one

3. The defective item must be reported and reurned within the warranty period(if possible,in the original packaging

4. If the product features do not match the advertisement, we will bear all shipping costs.


About Feedback:

1. If you are satisfied, please leave 5 stars positive feedback, we are very honored to receivea generous real assessment and photos, th !!!!

2. For any product or shipping problems, please contact us before opening a dispute orleaving any feedback/negative feedback, we will try our best to solve the problem untilyou are satisfied.


Returns and Refunds:

1. You have 7 days to contact us and you will not be able to return from the receipt date after30 days. If the item has been owned by you for more than 7 days, it will be considered usedand we will not refund or replace it. with no exceptions! Return shipping costs are theresponsibility of the buver.

2. All returned items must be in original packaging, you must provide us with a shippingtracking number.

3. If there is a return, please contact us in advance, we will help you solve it. If it cannot besolved online, we will accept your return and refund it to you.



2020-07-08 07:04:00

2020-08-24 03:28:00