Combined Voltage/Current Output with Surge Protection Reference Design
TIDA-00559
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Key Document
- Combined Voltage and Current Output With Surge Protection Reference Design
(PDF 19546 KB)
18 Nov 2016
Description
The TIDA-00559 TI Design provides a universal analog output (AO) for industrial sensors and transmitters. It is based on a 16-Bit DAC and uses a single output. This common output is user configurable for 0 to 10-V or for 4 to 20-mA. Usage in harsh industrial environment is addressed by a dedicated protection circuitry, designed to withstand differential mode surge pulses up to 1 kV / 40 Ω according to IEC61000-4-5. An isolated digital interface eases board configuration and evaluation.
Features
- Analog Output Sensor Interface:
- Based on 16-Bit DAC - Common Output Pin, Selectable as Voltage or Current Output:
- 0 V - 10 V (plus 10% Overrange), min load ≥ 1 kΩ
- 4 mA - 20 mA (0 mA – 24 mA), max load ≤ 320 Ω - Designed to meet EN 61000-4-5:
- ±1 kV, 40 Ω, 8/20μs, DM - Configuration and Evaluation Interface:
- Isolated 4-wire SPI - Power Input: 15 V - 35 V
- Reverse Polarity Protection
See the Important Notice and Disclaimer covering reference designs and other TI resources.