DAC5311

低功耗轨至轨输出 12 位串行输入 DAC

The 8-bit, DAC6311 10-bit, and DAC7311 12-bit devices are low-power, single-channel, voltage output digital-to-analog converters DACs. The low power consumption of these devices in normal operation 0.55 mW at 5 V, reducing to 2.5 µW in power-down mode makes it ideally suited for portable, battery-operated applications.

These devices are monotonic by design, provide excellent linearity, and minimize undesired code-to-code transient voltages while offering an easy upgrade path within a pin-compatible family. All devices use a versatile, three-wire serial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI™, QSPI™, Microwire, and digital signal processor DSP interfaces.

All devices use an external power supply as a reference voltage to set the output range. The devices incorporate a power-on reset POR circuit that ensures the DAC output powers up at 0 V and remains there until a valid write to the device occurs. The DAC5311, DAC6311, and DAC7311 contain a power-down feature, accessed over the serial interface, that reduces current consumption of the device to 0.1 µA at 2.0 V in power-down mode.

These devices are pin-compatible with the DAC8311 and DAC8411, offering an easy upgrade path from 8-, 10-, and 12-bit resolution to 14- and 16-bit. All devices are available in a small, 6-pin, SC70 SOT package. This package offers a flexible, pin- and function-compatible, drop-in solution within the family over an extended temperature range of –40°C to +125°C.

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Relative Accuracy:

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0.25 LSB INL DAC5311: 8-Bit

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0.5 LSB INL DAC6311: 10-Bit

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1 LSB INL DAC7311: 12-Bit

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_micro_Power Operation: 80 µA at 2.0 V

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Power-Down: 0.5 µA at 5 V, 0.1 µA at 2.0 V

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Wide Power Supply: 2.0 V to 5.5 V

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Power-On Reset to Zero Scale

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Straight Binary Data Format

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Low Power Serial Interface With Schmitt-

Triggered Inputs: up to 50 MHz

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On-Chip Output Buffer Amplifier, Rail-to-Rail

Operation

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SYNC Interrupt Facility

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Extended Temperature Range –40°C to +125°C

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Pin-Compatible Family in a Tiny, 6-Pin SC70

Package