Medical Applications Guide (Rev. B - Mouser Electronics

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24➔Diagnostic, Patient Monitoring and TherapyECG/Portable ECG and EEGPrecision, Rail-to-Rail I/O InstrumentationAmplifierINA326Get samples, datasheets, evaluation modules and app reports at:www.ti.com/sc/device/INA326The INA326 is a precision instrumentation amplifier with rail-to-railinput and output and with true single-supply operation it offers verylow DC errors and input common-mode ranges that extend beyond thepositive and negative rails. Excellent long-term stability and very low1/f noise assure low offset voltage and drift throughout the life ofthe product.Key Features• Low offset: 100µV (max)• Low offset drift: 0.4µV/°C (max)• Excellent long-term stability• Very low 1/f noise• Input common-mode range: 200mV below negative rail to 100mVabove positive rail• Wide output swing: within 10mV of rails• Single supply: +2.7V to +5.5V• Packaging: MSOP-8, MSOP-10Applications• Medical instrumentation• Multi-channel data acquisition systems• Low-level transducer amplifier for bridges, load cells, thermocouples• Wide dynamic range sensor measurements4-/8-Channel, 16-Bit, Serial Output ADC forPortable ApplicationsADS8341, ADS8342, ADS8343, ADS8344, ADS8345www.ti.com/sc/device/PARTnumber(Replace PARTnumber with ADS8341, ADS8342, ADS8343, ADS8344 orADS8345)The ADS8341 is a 4-channel, 16-bit ADC with synchronous serialinterface. Typical power dissipation is 8mW at a 100kHz throughputrate and a +5V supply. The reference voltage can be varied between500mV and V CC , providing a corresponding input voltage range of 0Vto V REF . It is tested down to 2.7V operation. The serial interface alsoprovides low-cost isolation for remote data acquisition.Key Features• Conversion rate: up to 100kHz• 4-/8-channel single-ended or 2-channel differential input• SINAD: 86dB• Serial interface• Single supply: 2.7V to 5V• Packaging: SSOP-16Applications• Test and measurement• Data acquisition• Battery-powered devicesSARDCLKV+ V-2 7V IN–14INA32685V 3IN+R 1R 2 C 26V OG = 2(R 2 /R 1 )CH0CH1CH2CH3COMV REFFourChannelMultiplexerCDACComparatorSerialInterfaceandControlCSSHDNDINDOUTBUSYADS8341 functional block diagram.INA326 functional block diagram.Medical Applications Guide Texas Instruments 2Q 2007
Diagnostic, Patient Monitoring and TherapyComponent Recommendations for ECG/Portable ECG and EEG25➔Component RecommendationsComponent Description Key Features Benefits Other TI SolutionsAmplifiersINA118 Instrumentation Amp 110dB CMRR, 5nA (max) bias current, 50µV (max) offset Bipolar suppliesINA121 Instrumentation Amp 106dB CMRR, 4pA (max) bias current, 200µV (max) offset Bipolar suppliesINA126 Instrumentation Amp 175µA/ch supply, 3µV/°C (max) drift, 250µV (max) offset Bipolar supplies INA2126 (dual)INA128 Instrumentation Amp 120dB CMRR, 5nA (max) bias current, 50µV (max) offset Bipolar suppliesOPA277 For Right Leg Drive 10µV offset, ±0.1µV/°C drift, 134dB open-loop gain OPA2277 (dual)OPA4277 (quad)INA321 Instrumentation Amp 94dB CMRR (G = 100), 500µV (max) offset, 7µV/°C(max) driftINA326 Instrumentation Amp 120dB CMRR (G=100), 100µV (max) offset, 0.4µV/°C(max) driftOPA130 FET-Input Amplifier 20pA (max) bias current, 90dB (min) CMRR, 1MHz BWOPA333 Precision Op Amp 1.8V V S , 17µA/ch I Q , 0.05µV/°C zero drift (max) CMOS, zero-drift series, SC70, SOT23 OPA2333 (dual)OPA335 Op Amp 5µV (max) offset, 0.05µV/°C (max) drift, 40µA supply, RRO SOT23 OPA735, OPA333OPA336 Op Amp 125µV (max) offset, 1.5µV/°C (max) drift, 32µA supply SOT23 OPA379Data ConvertersADS1252 Delta-Sigma ADC 24-bit, 40kSPS, ±0.0015% (max) nonlinearity, 5V supply Low power, fast conversion ADS1251, ADS1253, ADS1254ADS1255 Delta-Sigma ADC 24-bit, 30kSPS, ±0.0010% (max), input buffer, PGA 1:64, Complete measurement system ADS12565V supplyADS1258 Delta-Sigma ADC 16-channel, 24-bit, 125k/23,7kSPS Fastest multi-channel, delta-sigma ADC, ADS1256, ADS1255, ADS8344measures all 16 inputs in
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