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Data Converter

TPC2884

Quad Channel Current and Voltage Output DAC with ADC Readback

  • Overview
  • Development Resources
  • Application
  • Ordering Detail

Overview

The TPC2884 is a quad-channel voltage and current output digital-to-analog converter (DAC) that operates with a power supply range from −27 V to +50 V. The AVDD pin for each channel provides an independent positive power supply with a range of 7 V to 50 V, which can be used with an external adaptive power supply to reduce chip heating, and External resistance can also be connected in series with the AVDD to achieve a switchable HART impedance in LOOP_POWER current input mode. In the current output mode, each channel has an independent HART injection PIN to transmit HART.

The device in voltage output mode provides a five-wire output with the addition of an external diode to prevent backfill and high withstand voltage over the rail, as well as to compensate for voltage drops in traces and ports. In the current output mode, there is an output open-loop detection, and in order to reduce the leakage error of the (UIO) mode and the ADC input, the output impedance compensation is built in, and there is also a negative voltage detection to identify wiring faults. The device is UIO mode compatible, the voltage output PIN can be combined with the current output PIN, and for analog input compatibility, it can be used with external diodes to achieve port withstand voltage beyond the power rail, and the withstand voltage can reach ±50 V (± 15 V power supply).

The device has complete diagnosis, including built-in fault detection and a 12-bit ADC for port voltage readback. Built-in fault detection includes overcurrent direction of voltage output, current output loop break and negative voltage, power supply and output status, over-temperature protection, CRC calibration, SPI watchdog, etc. The built-in ADC reads back the voltage and current of each channel and the positive supply voltage, providing more flexible output monitoring.


  • Status

    Preview

  • Rating

    Industrial

  • Resolution

    16

  • VDD (V)

    7~50

  • Number of Channels

    4

  • Output Type

    Voltage, Current

  • Reference Type

    Int, Ext

  • Settling Time (μS)

    8

  • Architecture

    R-2R

  • Output POR Status

    0

  • INL

    ±0.01%FSR

  • DNL (LSB, Max)

    -1 to 1.5

  • Offset Error (mV, Max)

    ±0.05%FSR

  • IDD (μA/CH, Max) (μA)

    1640

  • Gain Error (% of FSR, Max)

    ±0.07

  • Voltage Output Range (V)

    0~5V,0~10V,±5V,±10V with 20% overrange,4~20mA,0~20mA,0~24mA

  • D to A Glitch Impulse (nV-sec)

    16

  • Interface Type

    SPI

  • Temperature Range (℃)

    -40 to +125

  • Package

    QFN7X7-48

Development Resources

  • Documentation

Application

    • Industrial Automation

    • Process Control

    • HART Network Connectivity

    • PLC and DCS


Ordering Detail

Order Part Number Buy Samples Rating Feature Status 1ku Price Release Date Package Lead time (week) MSL Packing MPQ CPQ

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