XTR305IRGWT Integrated Circuits (ICs)

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1. Description

The XTR305IRGWT is a complete output driver for costsensitive industrial and process control applications. The output can be configured as current or voltage by the digital I/V select pin. No external shunt resistor is required. Only external gain-setting resistors and a loop compensation capacitor are required. The separate driver and receiver channels provide flexibility. The instrumentation amplifier (IA) can be used for remote voltage sense or as a high-voltage, high-impedance measurement channel. In voltageoutput mode, a copy of the output current is provided, allowing calculation of load resistance. The digital output-selection capability, together with the error flags and monitor pins, makes remote configuration and troubleshooting possible. Fault conditions on the output and on the IA input, as well as overtemperature conditions, are indicated by the error flags. The monitoring pins provide continuous feedback about load power or impedance. For additional protection, the maximum output current is limited, and thermal protection is provided. The XTR305IRGWT is specified over the −40°C to +85°C industrial temperature range and for supply voltages up to 40 V, and is operational over the extended industrial temperature range (−55°C to +125°C).

2. Features

    1. User-Selectable: Current or Voltage Output

    2. VOUT: ±10 V (up to ±17.5 V at ±20-V supply)

    3. IOUT: ±20 mA (Linear up to ±24 mA)

    4. 40-V Supply Voltage

    5. Diagnostic Features:

        – Short- or Open-Circuit Fault Indicator Pin

        – Thermal Protection 

        – Overcurrent Protection

    6. No Current Shunt Required

    7. Output Disable for Single Input Mode

    8. Separate Driver and Receiver Channels

    9. Designed For Testability

3. Applications

    1. Motor Drives Analog Outputs: 4-20 mA and ±10 V

    2. PLC Output Programmable Driver

    3. Industrial Cross-Connectors

    4. Industrial High-Voltage I/O

    5. Three-Wire Sensor Current or Voltage Output

    6. ±10-V Two- and Four-Wire Voltage Output U.S. Patent Nos. 7,427,898, 7,425,848, and 7,449,873