Texas Instruments

Description

1. Translating Nonlinear Variations to a Linear Output Voltage. DGND. RFO. R1. R2. Input. Amp. XTR115 . Voltage. Regulator. Voltage. Reference. Two Wire. Note. OTXA delivers +/-250mV signal. Output requires +/- 0.5mA. R=0.25V / 5uA = 50kohm. Xc for 0.1uF at 1kHz is 1.7kohm; thus negligible versus 70kohm. XTR115 . 5V regulator output and 2.5V reference output. XTR116. 5V regulator output and 4.096V reference output. NOTE: For 4-20mA complete bridge and Operated from the XTR115s 5V subregulator output, Its low quiescent leaves XTR115 . Bridge impedance down to 735ohms can be accommodated with this. The XTR115 and XTR116 are suitable choices for this system, with the differences Using the XTR115 with the PGA309 to Generate 4mA to 20mA Output.