![]() It is designed to convert the tiny, noisy signal from the electrodes into a large, filtered signal that can be easily read by a low resolution ADC. The is an integrated signal-conditioning block for ECG and other biopotential measurement applications. Single lead ECG or 3 electrodes 2-pole adjustable high pass filter with fast restore capability 3-pole adjustable low pass filter Leads off detection: or DC options Integrated right-leg drive (RLD) amplifier Adjustable gain Internal RFI filter Shutdown Pin 20-lead 4x4mm LFCSP packageĢ0 HPSENSE 1 HPDRIVE 10k 2 +IN 3 IN 150k 4 RLDFB C1 5 RLD SW 6 OPAMP+ 7 REFOUT 8 OPAMP 9 A1 OUT 10 A2 LEADS-OFF DETECTION C2 LO 11 LO+ 12 IA AC/DC FR 19 IAOUT 18 REFIN 17 +VS 16 GND 15Ģ0Vp-p (typ) noise to 40 Hz) CMRR: 80 dB (DC to 60 Hz) Low supply current: 180 A (typ) ☓00 mV differential input range Rail to rail output to 3.5 supply voltageįitness and Activity Heart Rate Monitoring Portable ECG Biopotential signal acquisition Performance is specified from 0☌ to +70☌ and is operational from -40☌ to 85☌. The AD8232 is available in a 4 x 4 mm 20 pin LFCSP package. This functionality allows the AD8232 to recover quickly, and therefore take valid measurements soon after the leads are connected to the subject. After an abrupt change that rails the amplifier (such as a leadsoff condition), the AD8232 automatically adjusts to higher filter cutoff. The AD8232 includes a fast restore function that reduces the duration of otherwise long settling tails of the high-pass filters. The user can select the frequency cutoff of all filters to suit different types of applications. Additionally, an uncommitted operational amplifier enables the AD8232 to create a three-pole low pass filter to remove line noise and other interference signals. This filter is tightly coupled with the instrumentation amplifier’s architecture to allow both large gain and high pass filtering in a single stage, saving space and cost. The AD8232 can implement a two-pole high pass filter for eliminating motion artifacts and the electrode half-cell potential. The AD8232 is an integrated signal-conditioning block for ECG and other biopotential measurement applications. Single-Lead Heart Rate Monitor Analog Front End Details, datasheet, quote on part number: AD8232 Part ![]()
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