AS7030B/AS7038GB/AS7038RB
Software Description
Eval Kit Manual
• PUBLIC
UG001014
• v1-00 • 2021-May-06
53
│ 38
ECG Amplifier Configuration
The ECG (electro cardiogram) amplifier is a high impedance, low noise instrumentation amplifier with
analog circuitry to band pass filter the signal. Gain is distributed between 3 gain stages. The gain in
the first stage determines the tradeoff between achievable noise level and achievable input offset
voltage. With the highest gain of 4 at the first gain stage (G1) about 400 mV of offset can be managed.
This value scales up to a max of 1.6 V of offset at gain 1. An optional 50/60 Hz notch filter can be
enabled to attenuate unwanted noise from mains coupling.
The recommended gain settings are 4-6-8 and 4-6-16.
The ECG signal can be used independently or together with PPG in further computation. (e.g. blood
pressure).
Figure 38:
ECG Amplifier Configuration Submenu
