Electrocardiography (ECG)
Sensor Data Sheet
SPECIFICATIONS> Gain: 1100
> Range: ±1.5mV (with VCC = 3.3V)> Bandwidth: 0.5-40Hz> Consumption: ~0.17mA> Input Voltage Range: 2.0-3.5V> Input Impedance: 7.5GOhm> CMRR: 86dB

ECG 011020

Fig. 1. Pin-out and physical dimensions.

FEATURES> Bipolar differential measurement> Pre-conditioned analog output> High signal-to-noise ratio> Small form factor> Raw data output> Easy-to-use> “On-the-person” and “off-the-person”
use
APPLICATIONS> Heart rate & heart rate variability> Human-Computer Interaction> Biometrics> Affective computing> Physiology studies> Psychophysiology> Biofeedback> Biomedical devices prototyping
GENERAL DESCRIPTIONHeartbeats are triggered by bioelectricalsignals of very low amplitude generated bya special set of cells in the heart (the SAnode).
Electrocardiography(ECG)
enables the translation of these electricalsignals into numerical values, enablingthem to be used in a wide array ofapplications. Our sensor allow dataacquisition not only at the chest (“on-theperson”), but also at the hand palms (“offthe-person”), and works both with pregelled and most types of dry electrodes.
The bipolar configuration is ideal for low
noise data acquisition.

Fig. 2. Typical raw ECG data (acquired with BITalino(r)evolution) using an Einthoven triangle configuration.

Fig. 3. Example of a 1-lead placement with IN+ & IN- on
the collarbones and REF on the iliac crest.

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Electrocardiography (ECG)
Sensor Data Sheet
TRANSFER FUNCTION[-1.5𝑚𝑉, 1.5𝑚𝑉]
𝐴𝐷𝐶 1𝑛 − 2) × 𝑉𝐶𝐶
𝐸𝐶𝐺(𝑉) = 2
𝐺𝐸𝐶𝐺(𝐸𝐶𝐺(𝑚𝑉) = 𝐸𝐶𝐺(𝑉) × 1000
𝑉𝐶𝐶 = 3.3𝑉 (operating voltage)
𝐺𝐸𝐶𝐺 = 1100 (sensor gain)
𝐸𝐶𝐺(𝑉) – ECG value in Volt (𝑉)𝐸𝐶𝐺(𝑚𝑉) – ECG value in millivolt (𝑚𝑉)
𝐴𝐷𝐶 – Value sampled from the channel
𝑛 – Number of bits of the channel1
ORDERING GUIDEPart #SENS-ECG-NCSENS-ECG-UCE6

SENS-ECG-SHER

Description
Electrocardiography (ECG) sensor without connectors
Electrocardiography (ECG) sensor with UC-E6 sockets on both sides
for seamless plug & play connection to a BITalino (r)evolution
Plugged or CoreElectrocardiography (ECG) sensor with a Molex Sherlock 4-pin
socket on one side and a Molex Sherlock 3-pin socket on the otherfor easy 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); in BITalino
the first four channels are sampled using 10-bit resolution (𝑛 = 10), while the last two may be sampled using 6-bit (𝑛 =6).

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