ANALOG DEVICES AD5421CREZ Digital to Analogue Converter, 16 bit, 3 Wire, DSP, Microwire, QSPI, Serial, SPI, 1.71V to 5.5V

AD5421 is a complete, loop-powered, digital-to-analogue converter (DAC) designed to meet the needs of smart transmitter manufacturers in the industrial control industry. This device includes a regulated voltage output that is used to power itself and other devices in the transmitter. This regulator provides a regulated 1.8V to 12V output voltage. It also contains 1.22V and 2.5V references, thus eliminating the need for a discrete regulator and voltage reference. This device can be used with standard Highway Addressable Remote Transducer (HART®) FSK protocol communication circuitry without any degradation in specified performance. The high speed serial interface is capable of operating at 30MHz and allows for simple connection to commonly used microprocessors and microcontrollers via a SPI-compatible, 3-wire interface. It is widely used in application such as industrial process control, 4mA to 20mA loop-powered transmitters, smart transmitters, HART network connectivity etc.

• 16bit resolution and monotonicity
• Downscale alarm current is 3.21mA maximum
• Upscale alarm current is 22.83mA maximum
• Total unadjusted error is ±0.0064% FSR typical at (TA = 25°C)
• Relative accuracy is ±0.0015% FSR typical, gain and offset adjust registers
• Quiescent current 260µA typical, slew rate control function
• Flexible SPI-compatible serial digital interface with Schmitt triggered inputs
• On-chip fault alerts via FAULT pin or alarm current
• Operating temperature is -40°C to +105°C
• Package style is 28-lead thin shrink small outline package, exposed pad [TSSOP-EP]

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party