OVERVIEW
GebraBit ADS1191 is 3 lead, 1 channel sampling, 16 Bit ECG sensor Module.
GebraBit ADS1191 offers 2 choices for ADS1191 clock source ; one is ADS1191 Internal oscillator and the other, external, means on board 2.048Mhz crystal oscillator or ‘CLK’ pin. This is achieved by the ‘CLK SEL’ jumper selector. Also ‘EXT CLK’ jumper demonstrates an external clock source, whether the ‘CLK’ pin or 2.048Mhz Onboard crystal oscillator.
GebraBit ADS1191 module benefits from 1 channels of ADS1191 sensor due to considered 3.5mm headphone jack female socket. This means any 3-lead ECG cable with a 3.5mm phone jack can meet our requirements.
Another important issue of GebraBit ADS1191 is that this module is Pin Compatible with GEBRABUS , and users can access all important I/O of ADS1191 . For reading data and configuring the sensor, an SPI interface is required.
This Module carries ADS1191, a family of multichannel,simultaneous sampling, 16-bit, delta-sigma (ΔΣ)analog-to-digital converters (ADCs) with a built-inprogrammable gain amplifier (PGA), internal reference, and an onboard oscillator.The ADS1191/2 operate at data rates as high as 8kSPS.Lead-off detection can be implemented internal to the device,using the device internal excitation current sink/source.The ADS1191/2 have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal.
WARNING: FOR ACCURATE INFORMATION ABOUT ICs ABSOLUTE MAXIMUM RATINGS AND ITS PRECIOUS CHARACTERISTICS RANGES, USERS MUST CERTAINLY REFER TO ICs MANUFACTURE DATASHEET.
Key Features
- User selectable analog and digital supply voltage
- User selectable ADS1191 clock source (Internal or external )
- 2.048 Mhz crystal oscillator
- Benefits from 1 channel of ADS1191
- Can use 3-lead ECG cable with 3.5mm phone male jack
- ON/OFF LED indicator
- Access to important I/O of ADS1191
- SPI interface for reading data and configuring the sensor
- Pin Compatible with GEBRABUS
- GebraBit Medium package
- It can be used as a daughter board of GEBRABIT MCU Modules
- Featuring Castellated pad (Assembled as SMD Part)
- Separatable screw parts to reduce the size of the board
Pinout Diagram
Module Overview
Documents Link
Project and Source Code
Schematic (.Pdf)
Module Layout (.Pdf)
ADS1191 Datasheet
Module Overview