AD5666SRU-EP-2RL7

DAC 4CH Resistor-String 16Bit 14Pin TSSOP T/R

Product Details

The AD5666 is a low power, quad, 16-bit, buffered voltage-output DAC. The part operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design.

The AD5666 has an on-chip reference with an internal gain of 2. The AD5666-1 has a 1.25 V 5 ppm/°C reference, giving a full-scale output of 2.5 V; the AD5666-2 has a 2.5 V 5 ppm/°C reference, giving a full-scale output of 5 V. The on-board reference is off at power-up, allowing the use of an external reference. The internal reference is turned on by writing to the DAC.

The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V POR pin low or to midscale POR pin high and remains powered up at this level until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 400 nA at 5 V and provides software-selectable output loads while in power-down mode for any or all DAC channels.

The outputs of all DACs can be updated simultaneously using the LDAC function, with the added functionality of user-select-able DAC channels to simultaneously update. There is also an asynchronous CLR that clears all DACs to a software-selectable code—0 V, midscale, or full scale.

The AD5666 utilizes a versatile 3-wire serial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing.

The AD5666-EP supports defense and aerospace applications AQEC

**Product Highlights**

1. Quad, 16-bit DAC.

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

3. Available in 14-lead TSSOP.

4. Selectable power-on reset to 0 V or midscale.

5. Power-down capability. When powered down, the DAC typically consumes 200 nA at 3 V and 400 nA at 5 V.

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**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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Low power quad 16-bit DAC

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14-lead TSSOP

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

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Power down to 400 nA at 5 V, 200 nA at 3 V

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2.7 V to 5.5 V power supply

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Guaranteed monotonic by design

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Power-on reset to zero scale or midscale

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3 power-down functions

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See data sheet for additional features

AD5666-EP supports defense and aerospace applications AQEC standard

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Download AD5666-EP Data Sheet

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Military temperature range −55°C to +125°C

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Controlled manufacturing baseline

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One assembly/test site

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One fabrication site

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Enhanced product change notification

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Qualification data available on request

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V62/14626 DSCC Drawing Number