Data Sheet

Electrocardiography (ECG)
Sensor Data Sheet
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PAGE 2 OF 2
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TRANSFER FUNCTION
[-1.5𝑚𝑉, 1.5𝑚𝑉]
𝐸𝐶𝐺 𝑉 =
𝐴𝐷𝐶
2
!
−
1
2
. 𝑉𝐶𝐶
𝐺
!"#
𝐸𝐶𝐺 𝑚𝑉 = 𝐸𝐶𝐺 𝑉 . 1000
𝑉𝐶𝐶 = 3.3𝑉 (operating voltage)
𝐺
!"#
= 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 channel
1
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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 are sampled using 6-bit (𝑛 = 6).