AD5620 nanoDAC Datasheet

AD5620 Datasheet PDF, Equivalent


Part Number

AD5620

Description

(AD56x0) 12-/14-/16-Bit nanoDAC

Manufacture

Analog Devices

Total Page 28 Pages
PDF Download
Download AD5620 Datasheet PDF


AD5620
Data Sheet
Single, 12-/14-/16-Bit nanoDAC with
5 ppm/°C On-Chip Reference in SOT-23
AD5620/AD5640/AD5660
FEATURES
Low power, single nanoDACs
AD5660: 16 bits
AD5640: 14 bits
AD5620: 12 bits
12-bit accuracy guaranteed
On-chip, 1.25 V/2.5 V, 5 ppm/°C reference
Tiny 8-lead SOT-23, MSOP, and LFCSP packages
Power-down to 480 nA @ 5 V, 200 nA @ 3 V
3 V/5 V single power supply
Guaranteed 16-bit monotonic by design
Power-on reset to zero/midscale
3 power-down functions
Serial interface with Schmitt-triggered inputs
Rail-to-rail operation
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
PRODUCT HIGHLIGHTS
1. 12-/14-/16-bit nanoDAC—12-bit accuracy guaranteed.
2. On-chip, 1.25 V/2.5 V, 5 ppm/°C reference.
3. Available in 8-lead SOT-23, MSOP, and LFCSP packages.
4. Power-on reset to 0 V or midscale.
5. 10 µs settling time.
Table 1. Related Device
Part No.
Description
AD5662
2.7 V to 5.5 V, 16-bit DAC in SOT-23, LFCSP, and
MSOP, external reference
FUNCTIONAL BLOCK DIAGRAM
VREFOUT GND
VDD
POWER-ON
RESET
1.25/2.5V
REF
AD5620/AD5640/AD5660
VFB
DAC
REGISTER
REF(+)
16-BIT
DAC
OUTPUT
BUFFER
VOUT
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
RESISTOR
NETWORK
SYNC SCLK DIN
Figure 1.
GENERAL DESCRIPTION
The AD5620/AD5640/AD5660, members of the nanoDAC™
family of devices, are low power, single, 12-/14-/16-bit, buffered
voltage-out DACs and are guaranteed monotonic by design.
The AD5620/AD5640/AD5660-1 parts include an internal,
1.25 V, 5 ppm/°C reference, giving a full-scale output voltage
range of 2.5 V. The AD5620/AD5640/AD5660-2-3 parts include
an internal, 2.5 V, 5 ppm/°C reference, giving a full-scale output
voltage range of 5 V. The reference associated with each part is
available at the VREFOUT pin.
The parts incorporate a power-on reset circuit to ensure that the
DAC output powers up to 0 V (AD5620/AD5640/AD5660-1-2)
or midscale (AD5620-3 and AD5660-3) and remains there until
a valid write takes place. The parts contain 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 power consumption is
2.5 mW at 5 V, reducing to 1 µW in power-down mode.
The AD5620/AD5640/AD5660 on-chip precision output
amplifier allows rail-to-rail output swing to be achieved. For
remote sensing applications, the output amplifier’s inverting
input is available to the user. The AD5620/AD5640/AD5660 use
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.
Rev. G
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AD5620
AD5620/AD5640/AD5660
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Product Highlights ........................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AD5620/AD5640/AD5660-2-3 .................................................. 3
AD5620/AD5640/AD5660-1 ...................................................... 5
Timing Characteristics ................................................................ 7
Absolute Maximum Ratings............................................................ 8
ESD Caution.................................................................................. 8
Pin Configurations and Function Descriptions ........................... 9
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
D/A Section ................................................................................. 17
Resistor String ............................................................................. 17
REVISION HISTORY
8/13—Rev. F to Rev. G
Added LFCSP (Throughout)........................................................... 1
Added Thermal Impedance for LFCSP; Table 5........................... 8
Added Figure 5; Renumbered Sequentially .................................. 9
Updated Outline Dimensions ....................................................... 24
Changes to Ordering Guide .......................................................... 26
12/10—Rev. E to Rev. F
Changes to Ordering Guide .......................................................... 25
7/10—Rev. D to Rev. E
Moved Using the AD5660 as an Isolated, Programmable, 4 mA
to 20 mA Process Controller Section........................................... 22
Moved Power Supply Bypassing and Grounding Section......... 23
Changes to Ordering Guide .......................................................... 25
3/10—Rev. C to Rev. D
Changes to Ordering Guide .......................................................... 24
Data Sheet
Internal Reference ...................................................................... 17
Output Amplifier........................................................................ 17
Serial Interface ............................................................................ 17
Input Shift Register .................................................................... 18
SYNC Interrupt .......................................................................... 18
Power-On Reset.......................................................................... 19
Power-Down Modes .................................................................. 19
Microprocessor Interfacing....................................................... 19
Applications Information .............................................................. 21
Using a REF19x as a Power Supply for the
AD5620/AD5640/AD5660 ....................................................... 21
Bipolar Operation Using the AD5660 ..................................... 21
Using the AD5660 as an Isolated, Programmable, 4 mA to
20 mA Process Controller ......................................................... 22
Using the AD5620/AD5640/AD5660 with a Galvanically
Isolated Interface ........................................................................ 22
Power Supply Bypassing and Grounding................................ 23
Outline Dimensions ....................................................................... 24
Ordering Guide .......................................................................... 26
10/09—Rev. B to Rev. C
Changes to Ordering Guide .......................................................... 23
5/06—Rev. A to Rev. B
Updated Formatted ............................................................Universal
Updated Temperature Range ............................................Universal
Changes to Table 2.............................................................................3
Changes to Table 5.............................................................................8
Replaced Figure 17, Figure 18, and Figure 19............................. 12
Changes to Ordering Guides .................................................. 23, 24
9/05—Rev. 0 to Rev. A
Changes to Specifications.................................................................5
Changes to Outline Dimensions .................................................. 23
7/05—Revision 0: Initial Version
Rev. G | Page 2 of 28


Features Data Sheet Single, 12-/14-/16-Bit nanoD AC with 5 ppm/°C On-Chip Reference in SOT-23 AD5620/AD5640/AD5660 FEATURES L ow power, single nanoDACs AD5660: 16 bi ts AD5640: 14 bits AD5620: 12 bits 12-b it accuracy guaranteed On-chip, 1.25 V/ 2.5 V, 5 ppm/°C reference Tiny 8-lead SOT-23, MSOP, and LFCSP packages Power- down to 480 nA @ 5 V, 200 nA @ 3 V 3 V/ 5 V single power supply Guaranteed 16-b it monotonic by design Power-on reset t o zero/midscale 3 power-down functions Serial interface with Schmitt-triggered inputs Rail-to-rail operation SYNC int errupt facility APPLICATIONS Process c ontrol Data acquisition systems Portabl e battery-powered instruments Digital g ain and offset adjustment Programmable voltage and current sources Programmabl e attenuators PRODUCT HIGHLIGHTS 1. 12 -/14-/16-bit nanoDAC—12-bit accuracy guaranteed. 2. On-chip, 1.25 V/2.5 V, 5 ppm/°C reference. 3. Available in 8-l ead SOT-23, MSOP, and LFCSP packages. 4 . Power-on reset to 0 V or midscale. 5. 10 µs settling time. .
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