DAC8554

16 位、四通道、超低短时脉冲波形干扰、电压输出数模转换器

The is a 16-bit, quad-channel, voltage output, digital-to-analog converter DAC, offering low-power operation and a flexible serial host interface. It offers monotonicity, good linearity, and exceptionally low glitch. Each on-chip precision output amplifier allows rail-to-rail output swing to be achieved over the supply range of 2.7V to 5.5V. The device supports a standard 3-wire serial interface capable of operating with input data clock frequencies up to 50MHz for IOVDD = 5V.

The DAC8554 requires an external reference voltage to set the output range of each DAC channel. Also incorporated into the device is a power-on reset circuit which ensures that the DAC outputs power up at zero-scale and remain there until a valid write takes place. The DAC8554 provides a per channel power-down feature, accessed over the serial interface, that reduces the current consumption to 175nA per channel at 5V.

The low-power consumption of this device in normal operation makes it ideally suited to portable battery-operated equipment and other low-power applications. The power consumption is 4.25mW at 5V, reducing to 4µW in power-down mode.

The DAC8554 is available in a TSSOP-16 package with a specified operating temperature range of -40°C to +105°C.

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Relative Accuracy: 4LSB

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Glitch Energy: 0.15nV-s

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_Micro_Power Operation: 150µA per channel at 2.7V

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Power-On Reset to Zero-Scale

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Power Supply: +2.7V to +5.5V

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16-Bit Monotonic Over Temperature

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Settling Time: 10µs to ±0.003%FSR

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Ultra-Low AC Crosstalk: -100dB Typ

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Low Power SPI Compatible Serial Interface with Schmitt-Triggered Inputs: Up to 50MHz

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On-Chip Output Buffer Amplifier with Rail-to-Rail Operation

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Double Buffered Input Architecture

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Simultaneous or Sequential Output Update and Power-Down

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16-Channel Broadcast Capability

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1.8V to 5.5V Logic Compatibility

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Available in a TSSOP-16 Package

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APPLICA ONS

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Portable Instrumentation

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Closed-Loop Servo-Control

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Process Control

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Data Acquisition Systems

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Programmable Attenuation

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PC Peripherals

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