DAC8541

具有 1.8V 兼容并行接口和轨至轨电压输出的低功耗 16 位数模转换器

The is a low-power, single channel, 16-bit, voltage output DAC. Its on-chip precision output amplifier allows rail-to-rail voltage swing to be achieved at the output. The DAC8541 utilizes a 16-bit parallel interface and features additional powerdown function pins as well as hardware-enabled, asynchronous DAC updating and reset capability.

The DAC8541 requires an external reference voltage to set the output range of the DAC. The device incorporates a power-on-reset circuit that ensures that the DAC output powers up at min-scale and remains there until a valid write takes place to the device. In addition, the DAC8541 contains a power-down feature, accessed via two hardware pins, that when enabled reduces the current consumption of the device to 200 nA at 5 V.

The low power consumption of this device in normal operation makes it ideally suited for use in portable battery operated equipment applications. The power consumption is 1.2 mW at AVDD = 5 V reducing to 1 uW in power-down mode.

The DAC8541 is available in a 32-lead TQFP package with an operating temperature range of –40°C to 85°C.

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Micropower Operation: 250 uA at 5 V AVDD

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Power-On Reset to Min-Scale

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16-Bit Monotonic

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Settling Time: 10 us to ±0.003% FSR

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16-Bit Parallel Interface

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

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Hardware Reset to Min-Scale or Mid-Scale

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Double-Buffered Architecture

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Asynchronous LDAC Control

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Data Readback Support

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1.8 V Compatible Digital Interface:

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DVDD = 1.8 V–5.5 V

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Wide Analog Supply Range:

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AVDD = 2.7 V–5.5 V

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32-Lead 5 mm × 5 mm TQFP Package

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APPLICA ONS

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Process Control

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Data Acquisition Systems

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Closed-Loop Servo Control

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PC Peripherals

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Portable Instrumentation