AD5755-1ACPZ

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1. DESCRIPTION

The AD5755-1ACPZ is a quad, voltage and current output digital-toanalog converter (DAC) that operates with a power supply range from −26.4 V to +33 V. On-chip dynamic power control minimizes package power dissipation in current mode. This is achieved by regulating the voltage on the output driver from 7.4 V to 29.5 V using a dc-to-dc boost converter optimized for minimum on-chip power dissipation. Each channel has a corresponding CHART pin so that HART signals can be coupled onto the current output of the AD5755-1ACPZ. The device uses a versatile 3-wire serial interface that operates at clock rates of up to 30 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, DSP, and microcontroller interface standards. The interface also features optional CRC-8 packet error checking, as well as a watchdog timer that monitors activity on the interface.

2. FEATURES

    1. 16-bit resolution and monotonicity

    2. Dynamic power control for thermal management

    3. Current and voltage output pins connectable to a single terminal

    4. Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, or 0 mA to 24 mA ±0.05% total unadjusted error (TUE) maximum

    5. Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V ±0.04% total unadjusted error (TUE) maximum

    6. User programmable offset and gain

    7. On-chip diagnostics

    8. On-chip reference (±10 ppm/°C maximum)

    9. −40°C to +105°C temperature range

3. APPLICATIONS

    1. Process control

    2. Actuator control

    3. Programmable logic controllers (PLCs)

    4. HART network connectivity

4. PRODUCT HIGHLIGHTS

    1. Dynamic power control for thermal management.

    2. 16-bit performance.

    3. Multichannel.

    4. HART compliant.