The AD5668 device is a low power, octal, 16-bit, buffered voltage-output DAC. The device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design.
The AD5668 has an on-chip reference with an internal gain of 2. The AD5668-1 has an 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5668-2, -3 has a 2.5 V 5 ppm/°C reference, giving a full-scale output range of 5 V. The on-board reference is off at 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 (AD5668-1, -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 user-programmable code—zero scale, midscale, or full scale.
The AD5668 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 AD5668-EP supports defense and aerospace applicatons (AQEC)Product Highlights
|Title||Content Type||File Type|
|AD5628/AD5648/AD5668: Octal, 12-/14-/16-Bit SPI Voltage Output denseDAC with 5 ppm/°C On-Chip Reference Data Sheet (Rev H, 02/2014) (pdf)||Data Sheets|
|AD5668-EP: Octal, 16-Bit DAC with 5 ppm/°C On-Chip Reference in 14-Lead TSSOP Data Sheet (Rev 0, 11/2010) (pdf, 465 kB)||Data Sheets|
|AD5668-DSCC: Microcircuit, Linear, Octal, 16-Bit DAC with 5 ppm/°C On-Chip Reference, Monolithic Silicon Military Data Sheet (Rev A, 11/2012) (pdf)||Data Sheets|
|CN-0183: Precision 16-Bit, Bipolar Output Voltage Source with +12 V to ±5 V Supply (pdf, 252 kB)||Circuit Note|
|CN-0182: A Single-Supply, Low Power Programmable Window Detector (pdf, 249 kB)||Circuit Note|
|UG-155: Evaluation Board for the AD5668 Octal, 16-Bit, Serial Voltage Output DAC (pdf, 733 kB)||User Guides|
|Programmable Current and Voltage Output Drivers (pdf, 1369 kB)||Overview|
Extending the denseDAC™ Multichannel D/As
(pdf, 1100 kB)
denseDAC multichannel D/As are Analog Devices digital-to-analog converters with 8 to 40 channels, offering 12-bit to 16-bit resolution.
|Digital to Analog Converters ICs Solutions Bulletin (pdf)||Solutions Bulletins|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
|AD5668 IBIS Model (ibs)||IBIS Models||IBS|
|AD5668 - Microcontroller No-OS Driver||Device Drivers||HTML|
|AD5668 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design||FPGA HDL||HTML|
|BeMicro FPGA Project for AD5668 with Nios driver||FPGA HDL||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.