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Analog Devices Semiconductor Electronic Components Datasheet

AD5062 Datasheet

nanoDAC

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Fully Accurate 16-Bit VOUT nanoDAC
SPI Interface 2.7 V to 5.5 V, in an SOT-23
AD5062
FEATURES
Single 16-bit DAC, 1 LSB INL
Power-on reset to midscale or zero-scale
Guaranteed monotonic by design
3 power-down functions
Low power serial interface with Schmitt-triggered inputs
Tiny 8-lead SOT-23 package, low power
Fast settling time of 4 μs typically
2.7 V to 5.5 V power supply
Low glitch on power-up
Unbuffered voltage capable of driving 60 kΩ load
SYNC interrupt facility
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
VREF
VDD
POWER-ON
RESET
BUF
AD5062
DAC
REGISTER
REF(+)
DAC
VOUT
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
RESISTOR
NETWORK
AGND
SYNC SCLK DIN
DACGND
Figure 1.
Table 1. Related Devices
Part No.
Description
AD5061
2.7 V to 5.5 V, 16-bit nanoDAC D/A,
4 LSBs INL, SOT-23.
AD5063
2.7 V to 5.5 V, 16-bit nanoDAC D/A,
1 LSB INL, MSOP.
AD5040/AD5060 2.7 V to 5.5 V, 14-/16-bit nanoDAC D/A,
1 LSB INL, SOT-23.
GENERAL DESCRIPTION
The AD5062, a member of ADI’s nanoDAC family, is a low
power, single 16-bit unbuffered voltage-out DAC that operates
from a single 2.7 V to 5.5 V supply. The part offers a relative
accuracy specification of ±1 LSB, and operation is guaranteed
monotonic with a ±1 LSB DNL specification. The part uses a
versatile 3-wire serial interface that operates at clock rates up
to 30 MHz, and is compatible with standard SPI®, QSPI™,
MICROWIRE™, and DSP interface standards. The reference for
the AD5062 is supplied from an external VREF pin. A reference
buffer is also provided on-chip. The part incorporates a power-
on reset circuit that ensures the DAC output powers up to zero
scale or mid-scale and remains there until a valid write takes
place to the device. The part contains a power-down feature
that reduces the current consumption of the device to typically
300 nA at 5 V and provides software-selectable output loads
while in power-down mode. The part is put into power-down
mode over the serial interface. Total unadjusted error for the
part is <0.8 mV.
This part exhibits very low glitch on power-up.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
PRODUCT HIGHLIGHTS
1. Available in a tiny 8-lead SOT-23 package.
2. 16-bit accurate, 1 LSB INL.
3. Low glitch on power-up.
4. High speed serial interface with clock speeds up to 30 MHz.
5. Three power-down modes available to the user.
6. Reset to known output voltage (zero-scale or mid-scale).
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 ©2005–2009 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD5062 Datasheet

nanoDAC

No Preview Available !

AD5062
TABLE OF CONTENTS
Features .............................................................................................. 1 
Applications....................................................................................... 1 
Functional Block Diagram .............................................................. 1 
General Description ......................................................................... 1 
Product Highlights ........................................................................... 1 
Revision History ............................................................................... 2 
Specifications..................................................................................... 3 
Timing Characteristics..................................................................... 5 
Absolute Maximum Ratings............................................................ 6 
ESD Caution.................................................................................. 6 
Pin Configuration and Function Descriptions............................. 7 
Typical Performance Characteristics ............................................. 8 
Terminology .................................................................................... 13 
Theory of Operation ...................................................................... 14 
DAC Architecture....................................................................... 14 
REVISION HISTORY
5/09—Rev. 0 to Rev. A
Changes to Figure 43...................................................................... 17
7/05—Revision 0: Initial Version
Reference Buffer ......................................................................... 14 
Serial Interface ............................................................................ 14 
Input Shift Register .................................................................... 14 
SYNC Interrupt .......................................................................... 14 
Power-On to Midscale or Zero Scale....................................... 15 
Software Reset............................................................................. 15 
Power-Down Modes .................................................................. 15 
Microprocessor Interfacing....................................................... 15 
Applications..................................................................................... 17 
Choosing a Reference for the AD5062.................................... 17 
Bipolar Operation Using the AD5062 ..................................... 17 
Using AD5062 with a Galvanically Isolated Interface Chip . 18 
Power Supply Bypassing and Grounding................................ 18 
Outline Dimensions ....................................................................... 19 
Ordering Guide .......................................................................... 19 
Rev. A | Page 2 of 20


Part Number AD5062
Description nanoDAC
Maker Analog Devices
Total Page 20 Pages
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