SLVSL52 September   2026 XTR100

ADVMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 ESD Protection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Zero-Drift Clocking
      2. 7.1.2 Basic Functionality in Loop-Powered Transmitters
      3. 7.1.3 Current Consumption
      4. 7.1.4 System Error Estimation
    2. 7.2 Typical Applications
      1. 7.2.1 XTR100 4mA – 20mA Transmitter
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
      2. 7.2.2 XTR100 4mA – 20mA Low Voltage Transmitter
      3. 7.2.3 XTR100 Precision Divider and Adder
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 PSpice® for TI
        2. 8.1.1.2 TINA-TI™ Simulation Software (Free Download)
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

3 Description

The XTR100, XTR102, and XTR120 (XTR1xx) family is a family of precision amplifiers with integrated highly-matched scaling resistors, making the devices an excellent choice to implement a precision 2-wire 4-to-20mA transmitter driver. The amplifier is optimized for low-power high precision applications, with zero-drift technology resulting in unparalleled offset voltage, and offset drift. With an ultra-low 40µA of typical quiescent current, the XTR1xx achieves 1.0MHz of bandwidth, a broadband noise of 40nV/√Hz, and integrated 1/f noise of 1μVPP. XTR1xx operates with supply voltages down to 1.7V, enabling low-voltage applications. XTR1xx integrates a highly-matched dual resistor of 40kΩ and 10kΩ, creating an ultra-precise ratio of 4:1 with 0.02% maximum tolerance, and ±2ppm/°C drift. XTR100 comes in a 6-pin DBV package compatible with common 5-pin SOT-23. XTR102 adds an extra input for HART signal. XTR120 is a super-set of XTR102 with a second zero-drift precision amplifier that can be used to actively filter PWM signals.

Device Information
PART NUMBER AMPLIFIER COUNT PACKAGE(1) PACKAGE SIZE(2)
XTR100 Single DBV (SOT-23, 6) 2.9mm × 2.8mm
XTR102(3) Single DQC (WSON, 10) 3mm × 2mm
XTR120(3) Dual
(1) For more information, see Section 10.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
(3) Preview information (not Advance Information).
XTR100 XTR100 as 4mA – 20mA Loop DriverXTR100 as 4mA – 20mA Loop Driver
XTR100 Resistor Ratio Tolerance (DRatio) vs TemperatureResistor Ratio Tolerance (DRatio) vs Temperature