Medical Applications Guide (Rev. B - Mouser Electronics

More documents

Recommendations

Info

10➔Consumer and Portable Medical DevicesSystem Support ProductsVoltage Level TranslationAs operating voltage levels in microcontrollers continue to drop, avoid may be created between peripheral devices and processorsthat disrupts interfacing between the devices. TI’s translators enablecommunication between incompatible I/Os with level translationbetween the 1.2V, 1.5V, 1.8V, 2.5V and 3V nodes. The MSP430microcontroller shown in many applications within this guide, hasa 3.6V (max) I/O tolerance: thus, translators can be used to protectthe inputs and to interface to higher voltage peripherals.Applications• LCD interface• Interface devices with different supply voltagesSuggested ComponentsV CC Power SmallestRange Max I CC FootprintComponent Description (V) (µA) Pins/PackagesSN74AVC1T45* Single-bit Dual-Supply 1.2 to 3.6 10 6/WCSPBus Transceiver(NanoStar)SN74LVC1T45 Single-bit Dual-Supply 1.65 to 5.5 4 6/WCSPBus Transceiver(NanoStar)SN74AVC2T45* Dual-bit Dual-Supply 1.2 to 3.6 10 8/WCSPTransceiver(NanoStar)SN74LVC2T45 Dual-bit Dual-Supply 1.65 to 5.5 10 8/WCSPTransceiver(NanoStar)SN74AUP1T57 Single-Supply Voltage 2.3 to 3.6 0.9 6/WCSPTranslator(NanoStar)SN74AUP1T58 Single-Supply Voltage 2.3 to 3.6 0.9 6/WCSPTranslator(NanoStar)SN74AUP1T97 Single-Supply Voltage 2.3 to 3.6 0.9 6/WCSPTranslator(NanoStar)SN74AUP1T98 Single-Supply Voltage 2.3 to 3.6 0.9 6/WCSPTranslator(NanoStar)PCA9306 Dual Bidirectional I 2 C-bus — — 8/US, WCSPand SMBus Voltage-LevelTranslator* Bus-hold option available.1.8V CPU1.8VLevelTranslatorV CCADIRA1A2A3A4A5A6A7A8GNDGNDV CCBV CCBOEB1B2B3B4B5B6B7B8GND3.3V3.3VPeripheralI 2 C Bus I/O ExpansionOften there are not enough GPIOs available on the microcontrollerto control all the desired peripherals, such as controlling LEDs orinterfacing to a keypad. An I 2 C bus expander can increase the numberof GPIOs while taking up minimal board space with the 8-pin WCSP.Key Features• Processor pin savings• Improved board routing• Reduced board spaceApplications• Keypad control• LED control• Temperature sensingSuggested ComponentsFrequencyV CC(Max) I 2 C Range -bitComponent (kHz) Address (V) WidthPCA9536 400 1000 001 2.3 to 5.5 4PCF8574 100 0100 xxx 2.5 to 6.0 8PCF8574A 100 0111 xxx 2.5 to 6.0 8PCA9554 400 0011 xxx 2.3 to 5.5 8PCA9557 400 0011 xxx 2.3 to 5.5 8PCA6107 400 0011 xxx 2.3 to 5.5 8PCF8575 400 0100 xxx 2.5 to 5.5 16PCF8575C 400 0100 xxx 4.5 to 5.5 16PCA9535 400 0100 xxx 2.3 to 5.5 16PCA9539 400 1110 1xx 2.3 to 5.5 16PCA9555 400 0100 xxx 2.3 to 5.5 16Pressure Sensor1. Silicon Pressure2. Load Cell3.0VOptionalOp AmpLPV324V REFTLV431B 2.5VPower ManagementCharge PumpSwitching RegulatorExample application block diagram.RS-232I 2C BusMicrocontrollerwith Integrated12-/16-Bit ADCand LCD DriverPower ManagementLDO RegulatorIrDA3.3VKeypadEEPROMLCD DisplayDC MotorExample application block diagram.Medical Applications Guide Texas Instruments 2Q 2007
Consumer and Portable Medical DevicesSystem Support Products11➔Audio Signal RoutingOne of the most common applications for analog switches is signalrouting. This may be routing from one source to multiple destinationsor from several sources to a single destination. A single-pole, doublethrowanalog switch can be used for either situation. For example,the switch could be used to reroute the output of the audio poweramplifier to two different speakers. Another common application isswitching from an audio amplifier in the baseband of a mobile toan audio power amplifier for higher power output.Applications• DeMUX internal/external speakers• MUX audio power amplifier• Low-power routing (
Page 1 and 2: TMTechnology for InnovatorsMedical
Page 3 and 4: Consumer and Portable Medical Devic
Page 6: 6➔Consumer and Portable Medical D
Page 9: Consumer and Portable Medical Devic
Page 13: Consumer and Portable Medical Devic
Page 16 and 17: 16➔Consumer and Portable Medical
Page 18 and 19: 18➔Consumer and Portable Medical
Page 20 and 21: 20 Diagnostic, Patient Monitoring a
Page 22 and 23: 22➔Diagnostic, Patient Monitoring
Page 48 and 49: 48➔Medical ImagingUltrasound/Port
Page 54 and 55: 54➔Medical ImagingComponent Recom
Page 56 and 57: 56➔Medical ImagingCT ScannersDual
Page 58 and 59: 58➔Medical ImagingComponent Recom
Page 60 and 61:
60➔Medical ImagingMagnetic Resona
Page 62 and 63:
62➔Medical ImagingMagnetic Resona
Page 64 and 65:
64➔Medical ImagingComponent Recom
Page 66 and 67:
66➔Medical ImagingDigital X-Raybl
Page 68 and 69:
68➔Medical ImagingDigital X-RayLo
Page 70 and 71:
70➔Medical ImagingPET ScannersPET
Page 72 and 73:
72➔Medical ImagingComponent Recom
Page 74 and 75:
74➔Medical ImagingPower Managemen
Page 76 and 77:
76 Medical Instruments➔Medical In
Page 78 and 79:
78➔Medical InstrumentsMedical Ins
Page 80 and 81:
80 Resources➔Enhanced ProductTexa
Page 82 and 83:
82➔ResourcesTI Design ToolsBelow
Page 84:
TMTechnology for InnovatorsFindProd
show all

Medical Applications Guide (Rev. B - Mouser Electronics

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?