Medical Applications Guide (Rev. B - Mouser Electronics

Diagnostic, Patient Monitoring and TherapyVentilation37➔High-Voltage, High-Current Operational AmplifierOPA549Get samples, datasheets, evaluation modules and app reports at:www.ti.com/sc/device/OPA549The OPA549 is a high-voltage, high current op amp designed for drivinga wide variety of loads. It provides low-level signal accuracy and highoutput voltage and current. It is internally protected against overtemperatureconditions and current overloads. In addition, the OPA549provides an accurate, user-selected current limit. Unlike other designswhich use a “power” resistor in series with the output current path,the OPA549 senses the load indirectly. This allows the current limitto be adjusted from 0A to 10A with a resistor/potentiometer, orcontrolled digitally with a voltage-out or current-out DAC.Key Features• High output current: 8A continuous, 10A peak• Wide power supply range:• Single supply: +8V to +60V• Dual supply: ±4V to ±30V• Wide output voltage swing• High slew rate: 9V/µs• Control reference pin• Fully protected: thermal shutdown, adjustable current limit• Output disable control• Package: 11-pin power packageApplications• Valve, actuator drivers• Synchro, servo drivers• Test equipment• Transducer excitation• Power suppliesHigh-Side Measurement Current-Shunt Monitorwith Dual ComparatorsINA206, INA207, INA208www.ti.com/sc/device/PARTnumber(Replace PARTnumber with INA206, INA207 or INA208)The INA206, INA207 and INA208 are a family of high-side, currentshuntmonitors with voltage output, dual comparators and voltagereference. The INA206, INA207 and INA208 can sense drops acrossshunts at common-mode voltages from –16V to +80V. They are alsoavailable with three output voltage scales: 20V/V, 50V/V, and 100V/Vwith up to 500kHz bandwidth. The ICs incorporate two open-draincomparators with internal 0.6V references. Comparator 1 includes alatching capability, and Comparator 2 has a user-programmable delayon 14-pin versions. 14-pin versions also provide a 1.2V reference output.Key Features• Complete current sense solution• Common-mode range: –16V to +80V• High accuracy: 3.5% (max) over temp• Bandwidth: 500kHz• Quiescent current: 1.8mA• Packaging: SO-14, TSSOP-14, MSOP-10Applications• Medical equipment• Power management• Battery chargers• Notebook computersV 01INA206, INA207, INA20814V IN +V+OUTCMP1 IN+0.6V REF231.2V REF1312V IN –1.2V REF OUTCMP IN+411CMP1 OUTOPA549V OCMP2 IN–510CMP2 OUTRefI LIMR CLR CL sets the current limitvalue from 0A to 10A.(Very low power dissipation)CMP2 IN+0.6V REFGND6798CMP2 DELAYCMP1 RESETES PinForced Low: Output disabled.Indicates Low: Thermal shutdown.E/SV–SO-14, TSSOP-14INA206 functional block diagram.OPA549 functional block diagram.Texas Instruments 2Q 2007Medical Applications Guide