WAVGAT AD8232 fiziológiai mérési szív pulzus EKG biomonitor érzékelő modul kártya forró akció
WAVGAT AD8232 Physiological Measurement Heart Pulse ECG Bio Monitor Sensor Module Board Hot Sale
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Specifications:
1Single lead heart rate monitor
2AD8232 is an integrated front end, applicable to the heart of the biological electrical signal to carry out a letter
3The number of conditioning to carry out heart rate monitoring
4Ensure the performance of the rated temperature range of 0 to 70 degrees C, the operating temperature range of -40 to 85
5IC Compatible
Working on the principle:
1An integrated signal conditioning module for ECG and other bio electrical measurement applications The device is designed to extract, amplify and filter weak biological electrical signals in the case of noise generated by moving or remote electrode placement The design enables ultra low power analog-to-digital converter (ADC) or embedded microcontroller to easily capture the output signal
2AD8232 using bipolar point high pass filter to eliminate motion artifacts and electrode half cell potential The filter is tightly coupled with the instrument amplifier structure, which can realize the single stage high gain and high pass filter, thus saving the space and the cost
3AD8232 uses a non operational amplifier to create a three pole low pass filter, eliminating the additional noise Users can meet the needs of different types of applications by selecting the cut-off frequency of all filters
In order to improve the system circuit frequency and other undesirable interference of the common mode rejection performance, AD8232 built in an amplifier for the right side driver (RLD) and other drive lead applications
4AD8232 contains a fast recovery function, you can reduce the long high pass filter to establish the long tail phenomenon If the amplifier rail voltage signal mutation (such as the lead out of the case), AD8232 will automatically adjust to a higher filter cutoff state This feature allows the AD8232 to achieve rapid recovery, and thus the lead connection to the measurement of the object can be achieved as soon as possible after the measurement of the value
Application
Fitness and exercise heart rate monitoring
Portable ECG
Remote health monitoring
Game peripherals
Bio electrical signal acquisition
Pin number pin name Description
1 HPDRIVE high pass driver output The capacitor should be connected to the first high pass filter in HPDRIVE
AD8232 driver this pin to keep the HPSENSE at the same level as the reference voltage
2 IN instrumentation amplifier positive input IN is usually connected to the left arm (LA) electrode
3 - IN instrumentation amplifier negative input - IN is usually connected to the right arm (RA) electrode
4 RLDFB right leg driver feedback input RLDFB is the right leg driver circuit feedback pin
5 RLD right leg driver output The drive electrodes (usually for the right leg) should be connected to the RLD pin
6 SW fast recovery switch pin This pin should be connected to the output of the second high pass filter
7 OPAMP op amp inverting input
8 REFOUT reference voltage buffer output Instrument amplifier output reference this potential
REFOUT should be used as a virtual ground for any point in a circuit that requires a reference signal
9 - OPAMP operational amplifier inverting input
10 OUT op amp output This output provides a fully conditioned heart rate signal
OUT can be connected to the input side of the ADC
11 LOD - lead off output end of the comparator Fall detection mode in DC lead, and when the IN electrode is disconnected,
LOD - in the high state, otherwise it is in a low state In the exchange of lead off detection mode, LOD is always in the low state
Lead off comparator output In the DC lead off detection mode, when the IN electrode is disconnected, the LOD is in a high level,
On the contrary, it is in a low level state In the exchange of lead off detection mode, and when the IN or IN electrode is disconnected, LOD is in a high level state,
When these two electrodes are connected, they are in a low level state
12 LOD
13 SDN shutdown control input Driving the SDN to a low level, which can be turned into a low power shutdown mode
14 AC/DC lead off mode control input For DC lead off mode, the AC/DC pin should be driven to a low level
For the AC lead off mode, the AC/DC pin should be driven to the highest level
15 FR fast recovery control input FR drive to the high level can be fast recovery mode; otherwise, it should be driven to a low level
16 GND power supply
17 VS supply pin
18 REFIN reference voltage buffer input REFIN (high impedance input pins) can be used to set the level of the reference voltage buffers
19 IAOUT instrumentation amplifier output pin
20 HPSENSE instrumentation amplifier for high pass detection input
HPSENSE is connected to the R and C nodes that are set at the turn frequency of the DC blocking circuit
EP exposed pad The exposed pad should be GND or not connected
Package Included:
1x NEW AD8232 Ecg physiological measurement pulse heart Ecg Monitor Sensor Module
32816624357 - suq