AD5641BKSZ-REEL7 Analog Devices Inc, AD5641BKSZ-REEL7 Datasheet

IC,D/A CONVERTER,SINGLE,14-BIT,CMOS,TSSOP,6PIN

AD5641BKSZ-REEL7

Manufacturer Part Number

AD5641BKSZ-REEL7

Description

IC,D/A CONVERTER,SINGLE,14-BIT,CMOS,TSSOP,6PIN

Manufacturer

Analog Devices Inc

Series

nanoDAC™r

Datasheet

1.AD5641AKSZ-500RL7.pdf (20 pages)

Specifications of AD5641BKSZ-REEL7

Settling Time

6µs

Number Of Bits

Data Interface

SPI™

Number Of Converters

Voltage Supply Source

Single Supply

Power Dissipation (max)

550µW

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

SC-70-6, SC-88, SOT-363

Number Of Channels

Resolution

14b

Conversion Rate

1.7MSPS

Interface Type

Serial (3-Wire, SPI, QSPI, Microwire)

Single Supply Voltage (typ)

3.3/5V

Dual Supply Voltage (typ)

Not RequiredV

Architecture

Resistor-String

Power Supply Requirement

Single

Output Type

Voltage

Integral Nonlinearity Error

±4LSB

Single Supply Voltage (min)

2.7V

Single Supply Voltage (max)

5.5V

Dual Supply Voltage (min)

Not RequiredV

Dual Supply Voltage (max)

Not RequiredV

Operating Temp Range

-40C to 125C

Operating Temperature Classification

Automotive

Mounting

Surface Mount

Pin Count

Package Type

SC-70

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

AD5641BKSZ-REEL7TR

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FEATURES

6-lead SC70 package

Micropower operation: 100 μA maximum at 5 V

Power-down to typically 0.2 μA at 3 V

Single 14-bit DAC

B version: ±4 LSB INL

A version: ±16 LSB INL

2.7 V to 5.5 V power supply

Guaranteed monotonic by design

Power-on reset to 0 V with brownout detection

3 power-down functions

Low power serial interface with Schmitt-triggered inputs

On-chip output buffer amplifier, rail-to-rail operation

SYNC interrupt facility

APPLICATIONS

Voltage level setting

Portable battery-powered instruments

Digital gain and offset adjustment

Programmable voltage and current sources

Programmable attenuators

GENERAL DESCRIPTION

The AD5641, a member of the nanoDAC® family, is a single,

14-bit, buffered, voltage-out DAC that operates from a single

2.7 V to 5.5 V supply, typically consuming 75 μA at 5 V. The

part comes in a tiny SC70 package. Its on-chip precision output

amplifier allows rail-to-rail output swing to be achieved. The

AD5641 uses a versatile 3-wire serial interface that operates at

clock rates up to 30 MHz and is compatible with SPI®, QSPI™,

MICROWIRE™, and DSP interface standards. The reference for

AD5641 is derived from the power supply inputs and, therefore,

gives the widest dynamic output range. The part incorporates a

power-on reset circuit, which ensures that the DAC output

powers up to 0 V and remains there until a valid write to the

device takes place.

The AD5641 contains a power-down feature that reduces

current consumption typically to 0.2 μA at 3 V, and provides

software-selectable output loads while in power-down mode.

The part is put into power-down mode over the serial interface.

The low power consumption of the part in normal operation

makes it ideally suited to portable battery-operated equipment.

The combination of small package and low power makes this

nanoDAC device ideal for level-setting requirements such as

generating bias or control voltages in space-constrained and

power-sensitive applications.

Rev. C

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.

2.7 V to 5.5 V, <100 μA, 14-Bit nanoDAC,

SPI Interface in SC70 Package

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

Tel: 781.329.4700

Fax: 781.461.3113

Table 1. Related Devices

Part Number

AD5601/AD5611/AD5621

PRODUCT HIGHLIGHTS

SYNC

Available in a space-saving, 6-lead SC70 package.

Low power, single-supply operation. The AD5641 operates

from a single 2.7 V to 5.5 V supply and with a maximum

current consumption of 100 μA, making it ideal for

battery-powered applications.

The on-chip output buffer amplifier allows the output of

the DAC to swing rail-to-rail with a typical slew rate of

0.5 V/μs.

Reference derived from the power supply.

High speed serial interface with clock speeds up to

30 MHz. Designed for very low power consumption. The

interface powers up only during a write cycle.

Power-down capability. When powered down, the DAC

typically consumes 0.2 μA at 3 V.

Power-on reset with brownout detection.

CONTROL

POWER-ON

LOGIC

INPUT

SCLK SDIN

RESET

DAC

FUNCTIONAL BLOCK DIAGRAM

REF(+)

14-BIT

DAC

CONTROL LOGIC

POWER-DOWN

GND

Description

2.7 V to 5.5 V, <100 μA, 8-/10-/12-bit

nanoDAC, SPI interface in SC70

package

Figure 1.

OUTPUT

BUFFER

AD5641

www.analog.com

RESISTOR

NETWORK

OUT

Related parts for AD5641BKSZ-REEL7

AD5641BKSZ-REEL7 Summary of contents

Page 1

FEATURES 6-lead SC70 package Micropower operation: 100 μA maximum Power-down to typically 0.2 μ Single 14-bit DAC B version: ±4 LSB INL A version: ±16 LSB INL 2 5.5 V power supply ...

AD5641 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Characteristics ................................................................ 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin ...

Page 3

SPECIFICATIONS kΩ to GND unless otherwise noted. Table 2. Parameter Min STATIC PERFORMANCE Resolution 14 1 Relative Accuracy 1 Differential Nonlinearity Zero-Code Error Offset Error Full-Scale Error ...

Page 4

AD5641 TIMING CHARACTERISTICS 5.5 V; all specifications T DD Table 3. 1 Parameter Limit 4 ...

Page 5

ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter V to GND DD Digital Input Voltage to GND V to GND OUT Operating Temperature Range Industrial Storage Temperature Range Maximum Junction Temperature SC70 Package θ Thermal ...

Page 6

AD5641 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 SYNC Level-Triggered Control Input (Active Low). This is the frame synchronization signal for the input data. When SYNC goes low, it enables the input ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS REF T = 25° –1 –2 –3 –4 256 2256 4256 6256 8256 10256 12256 14256 DAC CODE Figure 4. Typical INL 2.0 MAX INL ...

Page 8

AD5641 0.0025 0.0020 0.0015 ZERO-CODE ERROR @ V DD 0.0010 0.0005 ZERO-CODE ERROR @ V FULL-SCALE ERROR @ V 0 –0.0005 –0.0010 FULL-SCALE ERROR @ –0.0015 –0.0020 –0.0025 –40 – TEMPERATURE (°C) ...

Page 9

REF –1.2 –1.3 –1 REF –1.5 –1.6 –40 – TEMPERATURE (°C) ...

Page 10

AD5641 CH1 = SCLK CH1 = 5V/DIV CH2 = 1V/DIV TIME BASE = 2μs/DIV Figure 22. Full-Scale Settling Time CH1 = SCLK CH2 = V OUT CH1 = 5V/DIV CH2 = 1V/DIV TIME BASE = 2μs/DIV Figure 23. Midscale Settling ...

Page 11

CH1 V OUT CH2 CH1 5V, CH2 1V, TIME BASE = 2µs/DIV Figure 28. Exiting Power-Down Mode 140 FULL SCALE 120 100 1/4 SCALE 80 60 ZERO SCALE FREQUENCY (MHz) Figure 29. I ...

Page 12

AD5641 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. See Figure 4 for a ...

Page 13

THEORY OF OPERATION DIGITAL-TO-ANALOG SECTION The AD5641 DAC is fabricated on a CMOS process. The architecture consists of a string DAC followed by an output buffer amplifier. Figure block diagram of the DAC architecture REF ...

Page 14

AD5641 DB15 (MSB) PD1 PD0 D13 SCLK SYNC SDIN DB15 INVALID WRITE SEQUENCE: SYNC HIGH BEFORE 16 FALLING EDGE TH POWER-ON RESET The AD5641 contains a power-on reset circuit that controls the output voltage during power-up. ...

Page 15

MICROPROCESSOR INTERFACING AD5641 to ADSP-2101 Interface Figure 37 shows a serial interface between the AD5641 and the ADSP-2101. The ADSP-2101 should be set up to operate in SPORT transmit alternate framing mode. The ADSP-2101 SPORT is programmed through the SPORT ...

Page 16

AD5641 APPLICATIONS CHOOSING A REFERENCE AS POWER SUPPLY FOR THE AD5641 The AD5641 comes in a tiny SC70 package with less than 100 μA supply current. Because of this, the choice of reference depends on the application requirement. For space-saving ...

Page 17

USING THE AD5641 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 might occur ...

Page 18

... AD5641 OUTLINE DIMENSIONS 0.10 MAX ORDERING GUIDE Temperature Model Range 1 AD5641AKSZ-REEL7 –40°C to +125°C 1 AD5641AKSZ-500RL7 –40°C to +125°C 1 AD5641BKSZ-REEL7 –40°C to +125°C 1 AD5641BKSZ-500RL7 –40°C to +125° RoHS Compliant Part. 2.20 2.00 1.80 1.35 2. 2.10 1.25 1. 1.80 PIN 1 ...

Page 19

NOTES Rev Page AD5641 ...

Page 20

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