Quad-Channel, 12-Bit, Serial Input, 4 mA to 20 mA and Voltage Output DAC with Dynamic Power Control

The AD5735 is a quad-channel voltage and current output 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 reduced power dissipation 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.

The AD5735 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 serial interface also features optional CRC-8 packet error checking, as well as a watchdog timer that monitors activity on the interface.

Product Highlights

* Dynamic power control for thermal management.

* 12-bit performance.

* Quad channel.

Applications

* Process control

* Actuator control

* PLCs

* 12-bit resolution and monotonicity

* Dynamic power control for thermal management

* Current and voltage output pins connectable to a single terminal

* Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, and 0 mA to 24 mA

* ±0.1% total unadjusted error (TUE) maximum

* Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V

* ±0.09% total unadjusted error (TUE) maximum

* User-programmable offset and gain

* On-chip diagnostics

* On-chip reference: ±10 ppm/°C maximum

* −40°C to +105°C temperature range