AD5640BCPZ-1RL7

数模转换器- DAC Single 3V 14bit SPI DAC with reference

Product Details

The AD5620/AD5640/AD5660, members of the _nano_DAC® family of devices, are low power, single, 12-/14-/16-bit, buffered voltage-out DACs and are guaranteed monotonic by design.

The AD5620/AD5640/AD5660-1 parts include an internal, 1.25 V, 5 ppm/°C reference, giving a full-scale output voltage range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include an internal, 2.5 V, 5 ppm/°C reference, giving a full-scale output voltage range of 5 V. The reference associated with each part is available at the VREFOUT pin.

The parts incorporate a power-on reset circuit to ensure that the DAC output powers up to 0 V AD5620/AD5640/AD5660-1-2 or midscale AD5620-3 and AD5660-3 and remains there until a valid write takes place. The parts contain a power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode. The power consumption is 2.5 mW at 5 V, reducing to 1 μW in power-down mode.

The AD5620/AD5640/AD5660 on-chip precision output amplifier allows rail-to-rail output swing to be achieved. For remote sensing applications, the output amplifier’s inverting input is available to the user. The AD5620/AD5640/AD5660 use a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards.

**Product Highlights**

1. 14-bit _nano_DAC — 12-bit accuracy guaranteed.

2. On-chip, 1.25 V/2.5 V, 5 ppm/°C reference.

3. Available in 8-lead SOT-23 and 8-lead MSOP packages.

4. Power-on reset to 0 V or midscale.

5. 10 µs settling time.

**Applications**

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Process control

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Data acquisition systems

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Portable battery-powered instruments

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Digital gain and offset adjustment

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Programmable voltage and current sources

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Programmable attenuators

### Features and Benefits

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14-Bit DAC; 12-Bit Accuracy Guaranteed

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On-chip, 1.25 V/2.5 V, 5 ppm/°C reference

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Tiny 8-lead SOT-23/MSOP packages

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Power-down to 480 nA @ 5 V, 200 nA @ 3 V

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3 V/5 V single power supply

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Guaranteed 16-bit monotonic by design

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 Power-on reset to zero/midscale

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3 power-down functions

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Serial interface with Schmitt-triggered inputs

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Rail-to-rail operation

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SYNC interrupt facility