TYPICAL CHARACTERISTICS - Adronic Components GmbH

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Pt100 100°C to 600°C FIGURE 7. ±12V Powered Transmitter/Receiver Loop. 14 RTD RTD R LIN1 R LIN1 5760Ω R Z R Z 137Ω R CM = 1kΩ R LIN2 0.01µF R CM = 1kΩ 0.01µF 13 4 R G 402Ω 3 2 12 1 VLIN IR1 14 + 11 V I IN R2 10 VREG V+ R G R G – VIN I RET FIGURE 8. Isolated Transmitter/Receiver Loop. 6 XTR105 12 1 VLIN 13 IR1 14 + I 11 VIN R2 10 VREG V+ R G 4 3 2 R G R G – VIN IRET 6 XTR105 9 B E 8 I O 7 I O B 9 E 8 7 Q 1 I O = 4mA – 20mA www.ti.com 1N4148 0.01µF NOTE: A 2-wire RTD connection is shown. For remotely located RTDs, a 3-wire RTD conection is recommended. R G becomes 383Ω, R LIN2 is 8060Ω. See Figure 3 and Table I. Q 1 I O = 4mA – 20mA 1N4148 0.01µF NOTE: A 3-wire RTD connection is shown. For a 2-wire RTD connection eliminate R LIN2 . 16 10 3 11 12 2 RCV420 13 15 14 4 5 +12V 16 3 10 11 12 2 RCV420 13 15 14 4 –12V 1µF 5 1µF 15 1µF 1µF 1 ISO122 16 2 10 8 9 7 V O = 0 to 5V +15V Isolated Power 0 from PWS740 –15V V+ VO 0 – 5V V– XTR105 SBOS061B
1.6mA FIGURE 9. Bridge Input, Current Excitation. R G R CM = 1kΩ (1) 12 1 VLIN I + R1 13 VIN 4 3 2 R G R G – VIN I RET 6 14 I 11 R2 V 10 REG V+ XTR105 XTR105 15 SBOS061B www.ti.com B E 7 9 8 NOTE: (1) Use R CM to adjust the common-mode voltage to within 1.25V to 3.5V.
Page 1 and 2: FEATURES 4-20mA CURRENT TRANSMITTER
Page 3 and 4: ELECTRICAL CHARACTERISTICS At TA =
Page 5 and 6: TYPICAL CHARACTERISTICS (Cont.) At
Page 7 and 8: APPLICATION INFORMATION Figure 1 sh
Page 9 and 10: EXTERNAL TRANSISTOR Transistor Q1 c
Page 11 and 12: RTD value at 4mA Output (R RTD MIN)
Page 13: Type J R LIN1 RTD R LIN2 FIGURE 5.
Page 19: IMPORTANT NOTICE Texas Instruments

TYPICAL CHARACTERISTICS - Adronic Components GmbH

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