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AD5045 Fiches technique(PDF) 1 Page - Analog Devices

No de pièce AD5045
Description  Fully Accurate, 12-/14-/16-Bit, Dual, VOUT nanoDAC SPI Interface, 4.5 V to 5.5 V in a TSSOP
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Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD5045 Fiches technique(HTML) 1 Page - Analog Devices

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Fully Accurate, 12-/14-/16-Bit, Dual, VOUT
nanoDAC SPI Interface, 4.5 V to 5.5 V in a TSSOP
AD5025/AD5045/AD5065
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
©2008 Analog Devices, Inc. All rights reserved.
FEATURES
Low power dual 12-/14-/16-bit DAC, ±1 LSB INL
Individual voltage reference pins
Rail-to-rail operation
4.5 V to 5.5 V power supply
Power-on reset to zero scale or midscale
Power down to 400 nA @ 5 V
3 power-down functions
Per channel power-down
Low glitch upon power-up
Hardware power-down lockout capability
Hardware LDAC with software LDAC override function
CLR function to programmable code
SDO daisy-chaining option
14-lead TSSOP
APPLICATIONS
Process controls
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5025/AD5045/AD5065 are low power, dual 12-/14-/16-bit
buffered voltage output nanoDAC® DACs offering relative accuracy
specifications of ±1 LSB INL with individual reference pins, and
can operate from a single 4.5 V to 5.5 V supply. The AD5025/
AD5045/AD5065 also offer a differential accuracy specification of
±1 LSB. The parts use a versatile 3-wire, low power Schmitt
trigger serial interface that operates at clock rates up to 50 MHz
and is compatible with standard SPI®, QSPI™, MICROWIRE™,
and DSP interface standards. The reference for the AD5025/
AD5045/AD5065 are supplied from an external pin and a refer-
ence buffer is provided on chip. The AD5025/AD5045/AD5065
incorporate a power-on reset circuit that ensures the DAC output
powers up zero scale or midscale and remains there until a valid
write takes place to the device. The AD5025/AD5045/AD5065
contain a power-down feature that reduces the current consump-
tion of the device to typically 400 nA at 5 V and provides software
selectable output loads while in power-down mode. The parts are
put into power-down mode over the serial interface. Total unad-
justed error for the parts is <2.5 mV. The parts exhibit very low
glitch on power-up. 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 clears all DACs
to a software-selectable code—0 V, midscale, or full scale. The
parts also feature a power-down lockout pin, PDL, which can be
used to prevent the DAC from entering power-down under any
circumstances over the serial interface.
PRODUCT HIGHLIGHTS
1.
Dual channel available in a 14-lead TSSOP package with
individual voltage reference pins.
2.
12-/14-/16-bit accurate, ±1 LSB INL.
3.
Low glitch on power-up.
4.
High speed serial interface with clock speeds up to 50 MHz.
5.
Three power-down modes available to the user.
6.
Reset to known output voltage (zero scale or midscale).
7.
Power-down lockout capability.
Table 1. Related Devices
Part No.
Description
AD5666
Quad,16-bit buffered DAC, 16 LSB INL, TSSOP
AD5024/AD5044/AD5064
Quad 16-bit nanoDAC, 1 LSB INL, TSSOP
AD5062/AD5063
16-bit nanoDAC, 1 LSB INL, MSOP
AD5061
16-bit nanoDAC, 4 LSB INL, SOT-23
AD5040/AD5060
14-/16-bit nanoDAC, 1 LSB INL, SOT-23
FUNCTIONAL BLOCK DIAGRAM
INTERFACE
LOGIC
INPUT
REGISTER
DIN
LDAC
GND
VDD
LDAC
VREFB
SYNC
SCLK
AD5025/AD5045/AD5065
CLR
VOUTB
VOUTA
DAC
REGISTER
DAC A
INPUT
REGISTER
DAC
REGISTER
DAC B
BUFFER
BUFFER
VREFA
SDO
PDL
POR
POWER-DOWN
LOGIC
Figure 1.


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Description similaire - AD5045_15

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REV. 0
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AD5065 AD-AD5065_15 Datasheet
1Mb / 28P
   Fully Accurate, 12-/14-/16-Bit, Dual, VOUT nanoDAC SPI Interface, 4.5 V to 5.5 V in a TSSOP
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2Mb / 28P
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   Fully Accurate, 12-/14-/16-Bit VOUT nanoDAC, Quad, SPI Interface, 4.5 V to 5.5 V in TSSOP
Rev. F
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2Mb / 28P
   Fully Accurate, 12-/14-/16-Bit VOUT nanoDAC, Quad, SPI Interface, 4.5 V to 5.5 V in TSSOP
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