AD5757ACPZ

AD5757 is a quad, current output DAC that operates with a power supply range from 10.8V to 33V. On-chip dynamic power control minimizes package power dissipation by regulating the voltage on the output driver from 7.4V to 29.5V, 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 AD5757. The part uses a versatile 3-wire serial interface that operates at clock rates of up to 30MHz 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. Application includes process control, actuator control, programmable logic controllers (PLCs), HART network connectivity.

• Resolution is 16bits (min, AVDD = VBOOST-x = 15V, DVDD = 2.7V to 5.5V)
• Dynamic power control for thermal management or external PMOS mode
• Total unadjusted error (TUE) is -0.05% FSR (min, AVDD = VBOOST-x = 15V)
• User programmable offset and gain, on-chip diagnostics
• On-chip reference is ±10ppm/°C (max, AVDD = VBOOST-x = 15V)
• Relative accuracy (INL) range from -0.006 to +0.006% FSR (AVDD = VBOOST-x = 15V)
• Differential nonlinearity (DNL) is -1LSB (min, AVDD = VBOOST-x = 15V)
• Gain error is ±0.004% FSR (typ, AVDD = VBOOST-x = 15V)
• DC crosstalk is 0.0005% FSR (external RSET, typ, AVDD = VBOOST-x = 15V)
• 64 lead LFCSP-VQ package, operating temperature range from -40°C to +105°C

Uwagi

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