AD5753

The AD5753 is a single-channel, voltage and current output digital-to-analog converter (DAC) that operates with a power supply range from a minimum of −33 V on AV_SS to a maximum of +33 V on AV_DD1 with a maximum operating voltage of 60 V between the two rails. On-chip dynamic power control (DPC) minimizes package power dissipation. This minimization is achieved by using buck dc-to-dc converters optimized for minimum on-chip power dissipation to regulate the voltage (V_DPC+ and V_DPC−) that is sent to the VI_OUT output driver circuitry from the ±5 V to ±27 V supply voltage. The C_HART pin enables a Highway Addressable Remote Transducer^® (HART) signal to be coupled on the current output.

The AD5753 uses a versatile, 4-wire, serial peripheral interface (SPI) that operates at clock rates of up to 50 MHz and is compatible with standard SPI, QSPI^™, MICROWIRE^™, digital signal processor (DSP), and microcontroller interface standards. The interface features an optional SPI cyclic redundancy check (CRC) and a watchdog timer (WDT). The AD5753 offers improved diagnostic features from earlier versions of similar DACs, such as output current monitoring and an integrated, 12-bit diagnostic analog-to-digital converter (ADC). The inclusion of a line protector on the VI_OUT, +V_SENSE, and −V_SENSE pins provides additional robustness.

PRODUCT HIGHLIGHTS

1. Range of advanced diagnostic features, including integrated ADC with two external input pins.
2. DPC, using integrated buck dc-to-dc converters for thermal management, which enables higher channel count in small size module housing.
3. Programmable power control (PPC) mode to enable faster than DPC settling time (15 μs typical).
4. Highly robust with output protection from miswire events (±38 V).
5. HART compliant.

APPLICATIONS

• Process control
• Actuator control
• Channel isolated analog outputs
• Programmable logic controller (PLC) and distributed control systems (DCS) applications
• HART network connectivity