Amplifier and Data Converter Selection Guide (Rev. B

Analog Monitoring and Control77Data acquisition system products from TIcome with a reputation for high performanceand integration along with the designflexibility required for a broad range ofapplications such as motor control, smartsensors for fan control, low-power monitoringand control, instrumentation systems,tunable lasers and optical power monitoring.For motor control and three-phase powercontrol, TI offers the new ADS7869. TheADS7869 is a 12-channel, 12-bit dataAnalog Monitoring and Control/Fan Controllersacquisition system featuring simultaneoussampling with three 12-bit SAR ADCs at1MSPS with serial and parallel interfacefor high-speed data transfer and dataprocessing.The AMC1210 is a four-channel, digital syncfilter designed to work with our family of currentshuntand Hall Effect sensor delta-sigmamodulators to simplify the completion of theADC function. The AMC1210 has four individualdigital filters that can be used independentlywith combinations of ADS1202, ADS1203,ADS1204, ADS1205 and ADS1208. It can alsobe used with the future AMC1203 devicewith built-in isolation.The AMC7823 is a highly-integrated dataacquisition and control device that has eightmultiplexed analog inputs into a 12-bit,200kSPS SAR ADC and eight analog voltageoutputs from the internal eight 12-bit DACs.➔Analog Monitoring and Control CircuitAMC7823Get samples, datasheets, evaluation modules and app reports at: www.ti.com/sc/device/AMC7823Key Features• 12-bit, 200kSPS ADC• 8 analog inputs• Input range: 0 to 2 x V REF• Programmable V REF , 1.25V or 2.5V• Eight 12-bit DACs (2µs settling time)• Internal bandgap reference• On-chip temperature sensor• Precision current source• SPI interface, 3V or 5V logic compatible• Single supply: 3V to 5V• Power-down mode• Packaging: QFN-40 (6x6mm)Applications• Communications equipment• Optical networks• ATE• Industrial control and monitoring• Medical equipmentThe AMC7823 is a complete analog monitoring and control circuit that includes an 8-channel,12-bit ADC, eight 12-bit DACs, four analog input out-of-range alarms and six GPIOs to monitoranalog signals and to control external devices. Also included are an internal sensor to monitorchip temperature and a precision current source to drive remote thermistors or RTDs to monitorremote temperatures.CH0CH1CH2CH3CH4CH5CH6CH7CH8AMC7823Analog Input Signal GroundMUXTEMPPrecision_CurrentADCChannel SelectOn ChipTemperatureSensorRangeThresholdOut-of-RangeAlarmADC Trigger(External / Internal)Sync Load(External/Internal)DAC-0•••DAC-7ReferenceDAC 0_OUTDAC 7_OUTExt. Ref_INCurrent_Setting ResistorRegisters andControl LogicSerial-Parellel Shift Reg.(Ext. ADCTrigger)(Ext. DACSync Load)SPI Interface•••CONVERTELDACAMC7823 functional block diagram.SCLKSSMOSIMISORESETDAVGALRGPIO-0 / ALR0GPIO-3 / ALR3GPIO-4GPIO-5AVDDAGNDDVDDDGNDBVDDTexas Instruments 3Q 2007Amplifier and Data Converter Selection Guide