TPC2884

Quad Channel Current and Voltage Output DAC with ADC Readback

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概述
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概述

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

Production
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

开发资源

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- 思瑞浦模拟产品选型册
  
  选型手册
  
  中文
  
  01/19/2024
- Datasheet_TPC2884
  
  数据手册
  
  英文
  
  12/11/2025
  
  Quad Channel Current and Voltage Output DAC with ADC Readback
- Introduction to Latch-up and the Preventive Measures
  
  技术文章
  
  英文
  
  01/19/2024
- Introduction to ESD Performance of a Silicon Chip
  
  技术文章
  
  英文
  
  01/19/2024
- Understanding the Details of DAC Performance
  
  技术文章
  
  英文
  
  01/19/2024
- Application Tips on ESD-EOS
  
  技术文章
  
  英文
  
  01/19/2024