MAX30101EFD+_T1: FAQ

Created over 8 years ago

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Are larger currents better for the MAX30101 luminous tube?

Considering power consumption and effective resolution, it is not better to have a larger current. However, for some parts to be measured (such as a wrist), or objects to be measured (such as people with…
Can a single crystal oscillator be shared between multiple ICs ?

While its not usually advisable to share a crystal between ICs, it can be done if the following constraints are considered: The traces from the crystal to the ICs should be as short as possible. …
Can MAX30101 be used to measure the respiratory rate?

Yes, the MAX30101 can be used to extract the respiratory rate. While traditional methods of respiratory rate measurement involve using a strain gauge to measure the expansion of the chest to measure respiration…
Can the luminous intensity of the MAX30101 LED be independently adjusted?

The current of the LED can be adjusted; the maximum is 50mA. In addition, the pulse width of the current can also be adjusted. The range of adjustment covers 4 stages. Every LED light signal can be adjusted…
Can the MAX30101/MAX30102 detect when the medical device is no longer attached?

The LEDs on the MAX30101/MAX30102 can be used not only for Heart Rate and SpO2 measurements but also for proximity detection. This allows the LEDs to be inactive, saving power while not in use. When the…
Can the systolic blood pressure be obtained from the PPG and ECG signals?

While there is no direct way to obtain the exact value of blood pressure from PPG and ECG signals, mathematical models can be used to estimate the blood pressure information. A popular way of doing so…
Does Maxim offer Algorithm of SpO2 and HR Calculation in PPG solution?

Maxim Offers MAX32664GWEA+T for customer to acquire data from devices such as MAX30101, MAX30102 etc and calculate SpO2 and Heart rate. Customer only need to use his own MCU to communicate with MAX32664GWEA…
Does the MAX30101 requires temperature compensation?

Although Maxim designs parts with an eye toward future needs, most of MAX30101 customers SPO2 accuracy specification was +/- 2~3% of SPO2 level. And the compensation by temperature was very small compared…
For the MAX30101 in HR mode (no green LED) is it acceptable to power the VLED from an unregulated source such as a Li-ion battery (3.0-4.2V)?

As the internal LED drivers of the MAX30101 use current regulation, the VLED connection can be powered from an unregulated voltage source. If you are not using the green LED, then the acceptable voltage…
How can we stop the MAX30101 from collecting data without disrupting the communication or resetting the registers?

The SHDN bit can be toggled to stop the part from collecting data without disrupting the communication or resetting any registers

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MAX30101EFD+_T1: FAQ

Are larger currents better for the MAX30101 luminous tube?

Can a single crystal oscillator be shared between multiple ICs ?

Can MAX30101 be used to measure the respiratory rate?

Can the luminous intensity of the MAX30101 LED be independently adjusted?

Can the MAX30101/MAX30102 detect when the medical device is no longer attached?

Can the systolic blood pressure be obtained from the PPG and ECG signals?

Does Maxim offer Algorithm of SpO2 and HR Calculation in PPG solution?

Does the MAX30101 requires temperature compensation?

For the MAX30101 in HR mode (no green LED) is it acceptable to power the VLED from an unregulated source such as a Li-ion battery (3.0-4.2V)?

How can we stop the MAX30101 from collecting data without disrupting the communication or resetting the registers?

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