AD5640 datasheet, PDF - EEWORLD Datasheet

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AD5640: DescriptionSERIAL INPUT LOADING, 8 us SETTLING TIME, 12-BIT DAC, PDSO8; Categorysemiconductor logic; File Size547KB，24 Pages; ManufacturerADI; Websitehttps://www.analog.com

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AD5640 Overview

SERIAL INPUT LOADING, 8 us SETTLING TIME, 12-BIT DAC, PDSO8

AD5640 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	8
Maximum operating temperature	105 Cel
Minimum operating temperature	-40 Cel
Rated supply voltage	3 V
Maximum linear error	0.1465 %
Processing package description	MO-178BA, SOT-23, 8 PIN
state	ACTIVE
Craftsmanship	CMOS
packaging shape	RECTANGULAR
Package Size	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.6500 mm
terminal coating	TIN LEAD
Terminal location	DUAL
Packaging Materials	PLASTIC/EPOXY
Temperature level	INDUSTRIAL
Input format	SERIAL
Type of converter	12-BIT DAC
Input bit encoding	BINARY
Rated settling time	8 us
Maximum analog output voltage	3.3 V
Minimum analog output voltage	0.0 V

User Manual

【User Guides】UG1541: ADuCM410 Development System Getting Started Tutorial User Guide (Rev. 0)
【User Guides】UG1807: ADuCM410/ADuCM420 Hardware Reference Manual (Rev. 0)

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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 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

FUNCTIONAL BLOCK DIAGRAM

REFOUT

GND

1.25/2.5V

REF

POWER-ON

RESET

AD5620/AD5640/AD5660

DAC

REF(+)

16-BIT

DAC

OUTPUT

BUFFER

OUT

INPUT

CONTROL

LOGIC

POWER-DOWN

CONTROL LOGIC

RESISTOR

NETWORK

04539-001

SYNC

SCLK

DIN

Figure 1.

APPLICATIONS

Process control

Data acquisition systems

Portable battery-powered instruments

Digital gain and offset adjustment

Programmable voltage and current sources

Programmable attenuators

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 V

REFOUT

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.

PRODUCT HIGHLIGHTS

12-/14-/16-bit

nanoDAC—12-bit

accuracy guaranteed.

On-chip, 1.25 V/2.5 V, 5 ppm/°C reference.

Available in 8-lead SOT-23 and 8-lead MSOP packages.

Power-on reset to 0 V or midscale.

10 μs settling time.

RELATED DEVICE

Part No.

AD5662

Description

2.7 V to 5.5 V, 16-bit DAC in SOT-23, external

reference

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.

Trademarks and registered trademarks are the property of their respective owners.

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

AD5620/AD5640/AD5660

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Product Highlights ........................................................................... 1

Related Device................................................................................... 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

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..................................................................................... 21

Using an 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 to 20 mA Process Controller ................................................. 21

Using the AD5620/AD5640/AD5660

with a Galvanically Isolated Interface...................................... 22

Power Supply Bypassing and Grounding................................ 22

Outline Dimensions ....................................................................... 23

AD5620 Ordering Guide........................................................... 23

AD5640 Ordering Guide........................................................... 24

AD5660 Ordering Guide........................................................... 24

REVISION HISTORY

9/05—Rev. 0 to Rev. A

Changes to Specifications ................................................................ 5

Changes to Outline Dimensions................................................... 23

7/05—Revision 0: Initial Version

Rev. A | Page 2 of 24

AD5640 Related Products

	AD5640	EVAL-AD5620EB
Description	SERIAL INPUT LOADING, 8 us SETTLING TIME, 12-BIT DAC, PDSO8	SERIAL INPUT LOADING, 8 us SETTLING TIME, 12-BIT DAC, PDSO8
Number of functions	1	1
Number of terminals	8	8
Maximum operating temperature	105 Cel	105 Cel
Minimum operating temperature	-40 Cel	-40 Cel
Rated supply voltage	3 V	3 V
Maximum linear error	0.1465 %	0.1465 %
Processing package description	MO-178BA, SOT-23, 8 PIN	MO-178BA, SOT-23, 8 PIN
state	ACTIVE	ACTIVE
Craftsmanship	CMOS	CMOS
packaging shape	RECTANGULAR	RECTANGULAR
Package Size	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
surface mount	Yes	Yes
Terminal form	GULL WING	GULL WING
Terminal spacing	0.6500 mm	0.6500 mm
terminal coating	TIN LEAD	TIN LEAD
Terminal location	DUAL	DUAL
Packaging Materials	PLASTIC/EPOXY	PLASTIC/EPOXY
Temperature level	INDUSTRIAL	INDUSTRIAL
Input format	SERIAL	SERIAL
Type of converter	12-BIT DAC	12-BIT DAC
Input bit encoding	BINARY	BINARY
Rated settling time	8 us	8 us
Maximum analog output voltage	3.3 V	3.3 V
Minimum analog output voltage	0.0 V	0.0 V

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