Electrogastrography (EGG)
Sensor Data Sheet

EGG 091018

SPECIFICATIONS> Gain: 5809
> Range: ±0.28mV (with VCC = 3.3V)> Bandwidth: 0.016-0.16Hz> Consumption: ~3mA
> Input Voltage Range: 1.8-5.5V> Input Impedance: >100GOhm> CMRR: 100dB
FEATURES> Single-channel sensor> Bipolar differential measurement> Pre-conditioned analog output> Small form factor> Raw data output> Easy-to-use

Fig. 1. Pin-out and physical dimensions.

APPLICATIONS> Bowel motility analysis> Gastric contractions detection> Sleep studies> Neurophysiology studies> Psychophysiology> Biomedical devices prototyping
GENERAL DESCRIPTION
Our electrogastrography (EGG) sensor has
been designed for user-friendly recording of
the electrical activity of the stomach. Multiple
sensors can be used simultaneously, andeither used in standalone or together withother modalities, our sensor can be a costeffective and straightforward way to assessbowel motility and overall gastric activity. The
bipolar configuration, with two measurement
electrodes, detects the electrical potentials inthe specific stomach region of choice, withrespect to a reference electrode (placed in anarea of low bioelectrical activity). The
resulting signal is the amplified difference
between these two leads, eliminating thecommon unwanted signals. Its convenient
form factor enables a discrete application in
the typical EGG electrode placement
locations.

PLUX – Wireless Biosignals, S.A.
Av. 5 de Outubro, n. 70 – 2.
1050-059 Lisbon, Portugal
bitalino@plux.info
http://bitalino.com/
REV B© 2020 PLUXThis information is provided "as is," and we make no express or implied warranties whatsoever with respect to functionality, operability, use,fitness for a particular purpose, or infringement of rights. We expressly disclaim any liability whatsoever for any direct, indirect, consequential,incidental or special damages, including, without limitation, lost revenues, lost profits, losses resulting from business interruption or loss of data,
regardless of the form of action or legal theory under which the liability may be asserted, even if advised of the possibility of such damages.

BEWARE: DIRECT OR INDIRECT COUPLING TO THE MAINS MAY RESULT IN SHOCKING HAZARDElectrogastrography (EGG)
Sensor Data SheetWARNING
This sensor has a high amplification gain, reason for which it is particularly sensitive to noise
resulting electromagnetic and motion sources. For optimal performance, it is therefore
recommended that data acquisition is done in an appropriate environment and with thesubject in stationary position. Power supplies, lighting and other common household elements
are prone to introduce parasite signals. Measurement in dynamic conditions is prone to beaffected by motion artifacts.
TRANSFER FUNCTION[-0.28𝑚𝑉, 0.28𝑚𝑉]
𝐴𝐷𝐶 1𝑛 − 2) × 𝑉𝐶𝐶
𝐸𝐺𝐺(𝑉) = 2
𝐺𝐸𝐺𝐺(𝐸𝐺𝐺(𝑚𝑉) = 𝐸𝐺𝐺(𝑉) × 1000
𝑉𝐶𝐶 = 3.3𝑉 (operating voltage)
𝐺𝐸𝐺𝐺 = 5809 (sensor gain)
𝐸𝐺𝐺(𝑉) – EGG value in Volt (𝑉)
𝐸𝐺𝐺(𝑚𝑉) – EGG value in millivolt (𝑚𝑉)
𝐴𝐷𝐶 – Value sampled from the channel
𝑛 – Number of bits of the channel1
ORDERING GUIDEPart #SENS-EGG-NC
SENS-EGG-UCE6

SENS-EGG-SHER

Description
Electrogastrography (EGG) sensor without connectors
Electrogastrography (EGG) sensor with UC-E6 sockets on both sides
for seamless plug & play connection to a BITalino (r)evolution
Plugged or CoreElectrogastrography (EGG) sensor with a Molex Sherlock 4-pin
socket on one side and a Molex Sherlock 3-pin socket on the other foreasy power and signal cable connection or pin breakout using PCB
wires

1 The number of bits for each channel depends on the resolution of the Analog-to-Digital Converter (ADC); inBITalino the first four channels are sampled using 10-bit resolution (𝑛 = 10), while the last two may be sampled using
6-bit (𝑛 = 6).
PAGE 2 OF 2