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1、4-20mA 电流输出芯片比较1) TI 公司 4-20mA 电流输出芯片比较Precision Voltage-to-Current Converter/TransmitterNAMEXTR110XTR111SUPPLY RANGEto 40V7V to 44VNONLINEARITY%INPUT0V to +5V , 0V to +10V0 to 12VOUTPUT0mA to 20mA, 5mA to 25mA Outputs Other Ranges0mA 20mA, 4mA 20mA,5mA 25mA AND VOLTAGE OUTPUTSOutput CurrentEquation
2、IO = 10 (Vref In/16) + (VIN1/4) + (VIN2/2) /RSPANIO = 10 Vvin/RsetPROBABLEPRICE90 元10 元XTR110 应用电路XTR111 内部没有提供将 0V 输入转换成 4mA 输出的电路， 最常用的方法是采用两个电阻网络连接参考电压和输入信号进行分压输入XTR111 应用电路4-20mA CURRENT TRANSMITTERwith Sensor Excitation andLinearizationNAMEXTR105XTR112XTR114SUPPLY RANGEto 36VPRECISION CURRENT S
3、OURCESINPUT EXCITATION2- OR 3-WIRE RTD OPERATIONOutput Current EquationIO = VIN (40/RG) + 4mA, VIN in Volts, RG inInput Offset V oltageVCM = 2VPROBABLE PRICE25元50 元60 元XTR105/XTR112/XTR114 原理图4-20mA Current-Loop TransmitterNAMEXTR115XTR116XTR117SUPPLY RANGEto 36Vto 40VVFOR SENSOR EXCITATIONNCLOW QUI
4、ESCENT CURRENT200A130ALOW SPAN ERROR%LOW NONLINEARITY ERROR%PROBABLE PRICE20 元15 元XTR115/XTR116/XTR117 原理图RCV42 4-20mA 电流转 0-5V 电压基本连接RCV424-20mA 电流转 0-5V 电压实例XTR101 -Precision, Low Drift 4-20mA TWO-WIRE TRANSMITTERXTR106- 4-20mA CURRENT TRANSMITTER withBridge Excitation and LinearizationXTR108- 4-2
5、0mA, TWO-WIRE TRANSMITTER “ Smart ” Programmable with SignalConditioningXTR300- Industrial Analog Current/V oltage OUTPUT DRIVER2) AD 公司 4-20mA 电流输出芯片比较DAC and Current TransmitterNAMEAD420AD5412AD5422AD694FUNCTIONDAC420 mA TransmitterRESOLUTION161216-SUPPLY RANGE12-32VAVDD:A VSS:V to 36 VINPUT16BIT
6、DIGITAL Serial Input12BIT DIGITAL Serial Input16BIT DIGITAL Serial InputPrecalibrated Input Ranges: 0 V to 2 V, 0 V to 10 VOUTPUT4 mA to 20 mA, 0 mA to 20 mA, 0 mA to 24 Ma4 mA to 20 mA, 0 mA to 20 mA, 0 mA to 24 mA4 mA to 20 mA, 0 mA to 20 mA, 0 mA to 24 mA4 20 mA, 0 20 mA0 V to 5 V, 0 V to10 V, 5
7、V, 10 V0 V to 5 V, 0 V to 10 V, 5 V, 10 V0 V to 5 V, 0 V to 10 V, 5 V, 10 VPROBABLEPRICE60 元50 元60 元50 元AD420 standard configurationAD5412/5422 in HART configurationAD694 standard configuration3) AMG 公司 4-20mA 电流输出芯片比较NAMEDESCRIPTIONPROBABL E PRICEAM400AM460AM46250 元40 元40 元AM400 standard configurationAM460 standard configurationAM462 standard configuration另查过 Linear 和 MAXIM 公司无相关产品
