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AD5663 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD5663
Description  2.7 V to 5.5 V, 250 uA, Rail-to-Rail Output, Dual 16-Bit nanoDAC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5663 Datasheet(HTML) 1 Page - Analog Devices

 
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2.7 V to 5.5 V, 250 μA, Rail-to-Rail Output,
Dual 16-Bit nanoDAC®
AD5663
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
FEATURES
Low power, dual 16-bit nanoDAC
Relative accuracy: ±12 LSBs maximum
Guaranteed monotonic by design
10-lead MSOP and 3 mm × 3 mm LFCSP_WD
2.7 V to 5.5 V power supply
Per channel power-down
Power-on reset to zero scale or midscale
Hardware LDAC and CLR functions
Serial interface; up to 50 MHz
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
FUNCTIONAL BLOCK DIAGRAM
INTERFACE
LOGIC
SCLK
SYNC
DIN
CLR
INPUT
REGISTER
INPUT
REGISTER
DAC
REGISTER
DAC
REGISTER
VDD
GND
POWER-ON
RESET
STRING
DAC A
STRING
DAC B
BUFFER
BUFFER
VREF
POWER-DOWN
LOGIC
VOUTA
VOUTB
AD5663
LDAC
LDAC
Figure 1.
Table 1. Related Devices
Part No.
Description
AD5623R/AD5643R/AD5663R
2.7 V to 5.5 V, dual 12-/14-/16-bit
DACs with internal reference
GENERAL DESCRIPTION
The AD5663, a member of the nanoDAC family, is a low power,
dual, 16-bit buffered voltage-out DAC that operates from a single
2.7 V to 5.5 V supply and is guaranteed monotonic by design.
The AD5663 requires an external reference voltage to set the
output range of the DAC. The part incorporates a power-on
reset circuit that ensures the DAC output powers up to 0 V or
midscale (AD5663-1) and remains there until a valid write takes
place. The part contains 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 low power consumption of this part in normal operation
makes it ideally suited to portable, battery-operated equipment.
The power consumption is 1.25 mW at 5 V, going down to
2.4 μW in power-down mode.
The on-chip precision output amplifier of the AD5663 allows
rail-to-rail output swing to be achieved.
The AD5663 uses a versatile, 3-wire serial interface that
operates at clock rates up to 50 MHz and is compatible with
standard SPI®, QSPI™, MICROWIRE™, and DSP interface
standards.
PRODUCT HIGHLIGHTS
1.
Dual 16-bit DAC; relative accuracy of ±12 LSBs maximum.
2.
Available in 10-lead MSOP and 10-lead, 3 mm × 3 mm
LFCSP_WD packages.
3.
Low power; typically consumes 0.6 mW at 3 V and
1.25 mW at 5 V.
4.
7 μs maximum settling time.


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