Abstract：
:Portable biomedical instrumentation has become an important part of diagnostic and treatment instrumentation, including telemedicine applications. Low-voltage and low-power design tendencies prevail. Modern battery cell voltages in the range of 3-3.6 V require appropriate circuit solutions. A two-electrode biopotential amplifier design is presented, with a high common-mode rejection ratio (CMRR), high input voltage tolerance and standard first-order high-pass characteristic. Most of these features are due to a high-gain first stage design. The circuit makes use of passive components of popular values and tolerances. Powered by a single 3 V source, the amplifier tolerates +/- 1 V common mode voltage, +/- 50 microA common mode current and 2 V input DC voltage, and its worst-case CMRR is 60 dB. The amplifier is intended for use in various applications, such as Holter-type monitors, defibrillators, ECG monitors, biotelemetry devices etc.
journal_name
Med Biol Eng Computjournal_title
Medical & biological engineering & computingauthors
Dobrev Ddoi
10.1007/BF02344642keywords:
subject
Has Abstractpub_date
2004-03-01 00:00:00pages
272-6issue
2eissn
0140-0118issn
1741-0444journal_volume
42pub_type
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