AD5423BCPZ-RL7

AD5423 is a single-channel, 16bit current/voltage output DAC with HART connectivity. It operates with a power supply range from -33V minimum on AVSS to +33V maximum on AVDD1. The CHART pin enables a Highway Addressable Remote Transducer® (HART) signal to be coupled on the current output. It uses a versatile, 4-wire, serial peripheral interface (SPI) that operates at clock rates of upto 50MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, digital signal processor (DSP), and microcontroller interface standards. The interface also features an optional SPI cyclic redundancy check (CRC) and a watchdog timer (WDT). This offers improved diagnostic features from earlier versions of similar DACs, such as an integrated, 12bit diagnostic analogue-to-digital converter (ADC). Application includes process control, actuator control, channel isolated analogue outputs, programmable logic controller (PLC) and distributed control systems (DCS) applications, HART network connectivity.

• 4mA to 20mA current output range (AVDD1 = 15V, AVDD2 = 5V, AVSS = -15V, TA = -40°C to +115°C)
• User programmable offset and gain
• Advanced on-chip diagnostics, including a 12bit ADC
• On-chip reference
• Output voltage offset range from -0.3V to +5.7V (AVDD1 = 15V, AVDD2 = 5V, TA = -40°C to +115°C)
• 16bits minimum resolution (AVDD1 = 15V, AVDD2 = 5V, TA = -40°C to +115°C)
• Total unadjusted error range from -0.05 to +0.05% full-scale range (FSR, TA = -40°C to +115°C)
• 0.35ppm FSR/°C typical output drift (AVDD1 = 15V, AVDD2 = 5V, TA = -40°C to +115°C)
• Integral nonlinearity range from -0.006 to +0.006% FSR (all ranges, TA = -40°C to +115°C)
• 32 lead LFCSP package, industrial operating temperature range from -40°C to +115°C

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