4-20mA电流环、电压电流转换芯片方案比较

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/Transmitter NAME XTR110 XTR111 SUPPLY RANGE to 40V7V to 44V NONLINEARITY%% INPUT0V to +5V, 0V to +10V0 to 12V
OUTPUT 0mA to 20mA, 5mA to 25mA Outputs
Other Ranges
0mA–20mA, 4mA–20mA,
5mA–25mA AND VOLTAGE
OUTPUTS
Output Current Equation I O = 10 [(Vref In/16) + (VIN1/4) +
(VIN2/2)] /RSPAN
I O = 10 × Vvin/Rset
PROBABLE
PRICE
90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 TRANSMITTER
with Sensor Excitation and Linearization NAME XTR105XTR112XTR114 SUPPLY RANGE to 36V
PRECISION CURRENT SOURCES
INPUT EXCITATION2- OR 3-WIRE RTD OPERATION
Output Current Equation IO = VIN (40/RG) + 4mA, VIN in Volts, RG in Input Offset V oltage VCM = 2V
PROBABLE PRICE25元50元60元
XTR105/XTR112/XTR114原理图
4-20mA Current-Loop Transmitter
NAME XTR115XTR116XTR117 SUPPLY RANGE to 36V to 40V VFOR SENSOR EXCITATION NC LOW QUIESCENT CURRENT200μA130A LOW 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RCV42——4-20mA电流转0-5V电压实例
XTR101--Precision, Low Drift 4-20mA TWO-WIRE TRANSMITTER
XTR106-- 4-20mA CURRENT TRANSMITTER with Bridge Excitation and Linearization
XTR108-- 4-20mA, TWO-WIRE TRANSMITTER “Smart” Programmable with Signal
Conditioning
XTR300-- Industrial Analog Current/V oltage OUTPUT DRIVER
（2）AD公司4-20mA电流输出芯片比较
DAC and Current Transmitter
NAME AD420AD5412AD5422AD694 FUNCTION DAC4–20 mA Transmitter RESOLUTION161216-
SUPPL Y
RANGE
12-32V A VDD: A VSS:V to 36 V
INPUT16BIT
DIGITAL
Serial Input
12BIT
DIGITAL
Serial Input
16BIT
DIGITAL
Serial Input
Precalibrated Input
Ranges:
0 V to 2 V, 0 V to 10 V
OUTPUT 4 mA to 20 mA, 0
mA to 20 mA,
0 mA to 24 Ma
0 V to 5 V, 0 V to
10 V, ±5 V, ±10 V 4 mA to 20 mA, 0
mA to 20 mA,
0 mA to 24 mA
0 V to 5 V, 0 V to
10 V, ±5 V, ±10 V
4 mA to 20 mA, 0
mA to 20 mA,
0 mA to 24 mA
0 V to 5 V, 0 V to
10 V, ±5 V, ±10 V
4–20 mA, 0–20 mA
PROBABLE
PRICE
60元50元60元50元
AD420—standard configuration
AD5412/5422—in HART configuration AD694—standard configuration
（3）AMG公司4-20mA电流输出芯片比较
NAME DESCRIPTION PROBABL E PRICE
AM40050元AM46040元AM46240元
AM400—standard configuration AM460—standard configuration
AM462—standard configuration
另查过Linear和MAXIM公司无相关产品。