AD5662ARJ-1 AD [Analog Devices], AD5662ARJ-1 Datasheet

AD5662ARJ-1

Manufacturer Part Number

AD5662ARJ-1

Description

2.7 V to 5.5 V, 250 uA, Rail-to-Rail Output 16-Bit DAC D/A in a SOT-23

Manufacturer

AD [Analog Devices]

Datasheet

1.AD5662ARJ-1.pdf (20 pages)

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Preliminary Technical Data

FEATURES

Low power (250 µA @ 5 V) single 16-bit nanoDAC

True 12-bit accuracy guaranteed

Tiny 8-lead SOT-23/MSOP package

Power-down to 200 nA @ 5 V, 50 nA @ 3 V

Power-on-reset to zero/midscale

2.7 V to 5.5 V power supply

Guaranteed 16-bit monotonic by design

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

GENERAL DESCRIPTION

The AD5662 parts are a member of the nanoDAC

devices. They are low power, single, 16-bit buffered voltage-out

DACs. All devices operate from a single 2.7 V to 5.5 V, and are

guaranteed monotonic by design.

The AD5662 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

(AD5662x-1) or midscale (AD5662x-2), 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

200 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 0.7 mW at 5 V, reducing to 1 µW in

power-down mode.

The AD5662’s on-chip precision output amplifier allows rail-to-

rail output swing to be achieved. The AD5662 utilizes 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. PrA

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.

family of

2.7 V to 5.5 V, 250 µA, Rail-to-Rail Output

16-Bit nanoDAC

The AD5662 is designed with new technology, and is the next

generation to the AD53xx family.

PRODUCT HIGHLIGHTS

RELATED DEVICES

Part No.

AD5620/AD5640/AD5660

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

SYNC

16-bit DAC; true 12-bit accuracy guaranteed.

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

Power-on-reset to zero or midscale.

Low power. Operates with 2.7 V to 5.5 V supply. Typically

consumes 0.35 mW at 3 V and 0.7 mW at 5 V, making it

ideal for battery-powered applications.

Power-down capability. When powered down, the DAC

typically consumes 50 nA at 3 V and 200 nA at 5 V.

10 µs settling time.

CONTROL

POWER-ON

LOGIC

INPUT

RESET

SCLK

DAC

FUNCTIONAL BLOCK DIAGRAM

DIN

REF(+)

REF

16-BIT

DAC

CONTROL LOGIC

POWER-DOWN

GND

Figure 1.

Description

3 V/5 V 12-/14-/16-bit DAC with

internal ref in Sot-23

D/A in a SOT-23

OUTPUT

BUFFER

AD5662

www.analog.com

AD5662

RESISTOR

NETWORK

OUT

Related parts for AD5662ARJ-1

AD5662ARJ-1 Summary of contents

Page 1

Preliminary Technical Data FEATURES Low power (250 µ single 16-bit nanoDAC True 12-bit accuracy guaranteed Tiny 8-lead SOT-23/MSOP package Power-down to 200 Power-on-reset to zero/midscale 2 ...

AD5662 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Characteristics..................................................................... 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Description .............................. 7 Terminology ...................................................................................... 8 Typical Performance Characteristics ............................................. 9 General Description ....................................................................... 13 D/A Section................................................................................. 13 Resistor String ...

Page 3

Preliminary Technical Data SPECIFICATIONS kΩ to GND Table 1. Parameter Min 2 STATIC PERFORMANCE Resolution 16 Relative Accuracy Differential Nonlinearity Zero Code Error Full-Scale Error Offset Error ...

Page 4

AD5662 Parameter Min POWER REQUIREMENTS V 2 (Normal Mode (All Power-Down Modes 4 5.5 V ...

Page 5

Preliminary Technical Data TIMING CHARACTERISTICS All input signals are specified with ns/V (10 5.5 V; all specifications T DD Table 2. Limit at T Parameter V ...

Page 6

AD5662 ABSOLUTE MAXIMUM RATINGS T = 25°C unless otherwise noted. A Table 3. Parameter V to GND DD Digital Input Voltage to GND V to GND OUT V to GND REF Operating Temperature Range Industrial (B Version) Storage Temperature Range ...

Page 7

Preliminary Technical Data PIN CONFIGURATION AND FUNCTION DESCRIPTION Table 4. Pin Function Descriptions Pin No. Mnemonic Function 1 V Power Supply Input. These parts can be operated from 2 5 Reference Voltage Input. ...

Page 8

AD5662 TERMINOLOGY Relative Accuracy For the DAC, relative accuracy or integral nonlinearity (INL measure of the maximum deviation, in LSBs, from a straight line passing through the endpoints of the DAC transfer function. A typical INL versus code ...

Page 9

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS Figure 4. Typical INL Plot Figure 5. Typical DNL Plot Figure 6. Typical Total Unadjusted Error Plot Figure 7. INL Error and DNL Error vs. Temperature Figure 8. Zero-Scale Error and Full-Scale Error vs. ...

Page 10

AD5662 Figure 10. Source and Sink Current Capability with V Figure 11. Source and Sink Current Capability with V Figure 12. Supply Current vs. Code = 3 V Figure 13. Supply Current vs. Temperature Figure 14. ...

Page 11

Preliminary Technical Data Figure 16. Supply Current vs. Logic Input Voltage Figure 17. Full-Scale Settling Time Figure 18. Half-Scale Settling Time Figure 19. Power-On Reset SCLK 2 1 CH1 500mV CH2 5.0V Figure 20. Exiting Power-Down to ...

Page 12

AD5662 2.500400 2.500300 2.500200 2.500100 2.500000 2.499900 2.499800 2.499700 2.499600 2.499500 2.499400 T = 25°C A 13nS/SAMPLE NUMBER 2.499300 1 LSB CHANGE AROUND MIDSCALE (7FFFh → 8000h) 2.499200 GLITCH IMPULSE = 1.271nV.s 2.499100 0 50 100 ...

Page 13

Preliminary Technical Data GENERAL DESCRIPTION D/A SECTION The AD5662 DAC is fabricated on a CMOS process. The architecture consists of a string DAC followed by an output buffer amplifier. Figure 27 shows a block diagram of the DAC architecture. V ...

Page 14

AD5662 DB23 (MSB SCLK SYNC DB23 DIN INVALID WRITE SEQUENCE: SYNC HIGH BEFORE 24 TH FALLING EDGE POWER-ON RESET The AD5662 family contains a power-on-reset circuit that controls the output voltage during power-up. The ...

Page 15

Preliminary Technical Data MICROPROCESSOR INTERFACING AD5662 to ADSP-2101/ADSP-2103 Interface Figure 32 shows a serial interface between the AD5662 and the ADSP-2101/ADSP-2103. The ADSP-2101/ADSP-2103 should be set up to operate in SPORT transmit alternate framing mode. The ADSP-2101/ADSP-2103 SPORT is programmed ...

Page 16

AD5662 APPLICATIONS USING REF19x AS A POWER SUPPLY FOR AD5662 Because the supply current required by the AD5662 is extremely low, an alternative option is to use a REF19x voltage reference (REF195 for 5 V, REF193 for ...

Page 17

Preliminary Technical Data USING AD5662 WITH A GALVANICALLY ISOLATED INTERFACE In process-control applications in industrial environments often necessary to use a galvanically isolated interface to protect and isolate the controlling circuitry from any hazardous common-mode voltages that may ...

Page 18

... AD5662 OUTLINE DIMENSIONS INDICATOR 0.15 MAX ORDERING GUIDE Model Grade Power-On Reset to Code AD5662ARJ-1 A Zero AD5662ARJ-2 A Midscale AD5662ARM A Zero AD5662BRJ-1 B Zero AD5662BRJ-2 B Midscale AD5662BRM B Zero SOT-23 MSOP 2.90 BSC 1.60 BSC 2.80 BSC PIN 1 0.65 BSC 1.95 1.30 BSC 1.15 0.90 1.45 MAX 0.22 0.08 0.38 SEATING 0.22 PLANE COMPLIANT TO JEDEC STANDARDS MO-178BA Figure 39 ...

Page 19

Preliminary Technical Data NOTES Rev. PrA | Page AD5662 ...

Page 20

AD5662 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR04777–0–10/04(PrA) Preliminary Technical Data Rev. PrA | Page ...

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