Hot-selling and scarce AD5668ARUZ-2 Octal, 12-/14-/16-Bit SPI Voltage Output denseDAC TSSOP16 spot stock

Product Descriptions

The AD5628/AD5648/AD5668 devices are low power, octal,12-/14-/16-bit, buffered voltage-output DACs. All devices operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5668 and AD5628 are available in both a 4 mm ×4 mm LFCSP and a 16-lead TSSOP,while the AD5648 is available in both a 14-lead and 16-lead TSSOP.

The AD5628/AD5648/AD5668 have an on-chip reference with an internal gain of 2. The AD5628-1/AD5648-1/AD5668-1 have a 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V;the AD5628-2/AD5648-2/AD5668-2 and AD5668-3 have a 2.5 V 5 ppm/°C reference, giving a full-scale output range of5 V. The on-board reference is offat power-up, allowing the use of an external reference. The internal reference is enabled via a software write.

The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V (AD5628-1/AD5648-1/AD5668-1, AD5628-2/AD5648-2/AD5668-2) or midscale (AD5668-3) 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-selectable DAC channels to simultaneously update.There is also an asynchronous CLR that updates all DACs to a userprogrammable code—zero scale,midscale,or full scale. 

The AD5628/AD5648/AD5668 utilize 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.

Product Features

Low power, small footprint, pin-compatible octal DACs

AD5668: 16 bits

AD5648: 14 bits

AD5628: 12 bits

14-lead/16-lead TSSOP, 16-lead LFCSP, and 16-lead WLCSP

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

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

2.7 V to 5.5 V power supply

Guaranteed monotonic by design

Power-on reset to zero scale or midscale

3 power-down functions  

Hardware LDAC and LDAC override function

CLR function to programmable code

Rail-to-rail operation

Product Applications

Process control

Data acquisition systems

Portable battery-powered instruments

Digital gain and offset adjustment

Programmable voltage and current sources

Programmable attenuators

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Product Specifications

Product Photos

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