The XTR105 is a monolithic 4-20mA, 2-wire current transmitter with two precision current sources. It provides complete current excitation for platinum RTD temperature sensors and bridges, instrumentation amplifiers, and current output circuitry on a single integrated circuit.
Versatile linearization circuitry provides a 2nd-order correction to the RTD, typically achieving a 40:1 improvement in linearity.
Instrumentation amplifier gain can be configured for a wide range of temperature or pressure measurements. Total unadjusted error of the complete current transmitter is low enough to permit use without adjustment in many applications. This includes zero output current drift, span drift, and nonlinearity. The XTR105 operates on loop power-supply voltages down to 7.5V.
The XTR105 is available in DIP-14 and SO-14 surface-mount packages and is specified for the 40°C to +85°C industrial temperature range.
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|Vs (Min) (V)|
|Vs (Max) (V)|
|Loop Voltage (V)|
|Full Scale Input Range|
|Non-Linearity (Max) (%)|
|Output Zero Error (+/-) (Max) (uA)|
|Auxiliary Output Voltage (V)|
|Span Error (Max) (%)|
|Offset Voltage (+/-) (Max) (uV)|
|Offset Voltage Drift (+/-) (Max) (uV/Degrees Celsius)|
|CMRR, 60Hz (Min) (dB)|
|Estimated Package Size (WxL) (mm2)|
|Approx. Price (US$)|
|Output Range (mA)|
|7.5 to 36|
|5mV to 1V|
| PDIP |
| 14SOIC: 3.91 x 8.65: 51 mm2 |
14PDIP: 6.35 x 19.3: 161 mm2
|4.60 | 1ku|
|Two 800uA sources|
|4 to 20|
| 14PDIP |
|Sample & Buy|
|Part #||Name||Product Family||Comments|
|ISO124||Precision Lowest Cost Isolation Amplifier||AMPLIFIERS AND LINEAR - ISOLATION AMPLIFIER||
XTR105 can be used with the ISO124 in Isolated 4-20mA Instrument Loop. |
See Literature sbos074c