ad5321brm-reel Analog Devices, Inc., ad5321brm-reel Datasheet

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ad5321brm-reel

Manufacturer Part Number
ad5321brm-reel
Description
2.5 V To 5.5 V, 120 ?a, 2-wire Interface, Voltage-output 8-/10-/12-bit Dacs
Manufacturer
Analog Devices, Inc.
Datasheet
FEATURES
AD5301: buffered voltage output 8-bit DAC
AD5311: buffered voltage output 10-bit DAC
AD5321: buffered voltage output 12-bit DAC
6-lead SOT-23 and 8-lead MSOP packages
Micropower operation: 120 μA @ 3 V
2-wire (I
Data readback capability
2.5 V to 5.5 V power supply
Guaranteed monotonic by design over all codes
Power-down to 50 nA @ 3 V
Reference derived from power supply
Power-on reset to 0 V
On-chip rail-to-rail output buffer amplifier
3 power-down functions
APPLICATIONS
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
Rev. B
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
C®-compatible) serial interface
SDA
SCL
A1*
A0
*AVAILABLE ON 8-LEAD VERSION ONLY
INTERFACE
POWER-ON
RESET
LOGIC
GND
FUNCTIONAL BLOCK DIAGRAM
REGISTER
2.5 V to 5.5 V, 120 μA, 2-Wire Interface,
DAC
Voltage-Output 8-/10-/12-Bit DACs
Figure 1.
REF
8-/10-/12-BIT
V
DAC
DD
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The AD5301/AD5311/AD5321
ered, voltage-output DACs that operate from a single 2.5 V to
5.5 V supply, consuming 120 μA at 3 V. The on-chip output
amplifier allows rail-to-rail output swing with a slew rate of
0.7 V/μs. It uses a 2-wire (I
operates at clock rates up to 400 kHz. Multiple devices can share
the same bus.
The reference for the DAC is derived from the power supply
inputs and thus gives the widest dynamic output range. These
parts incorporate a power-on reset circuit, which ensures that
the DAC output powers up to 0 V 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 50 nA at
3 V and provides software-selectable output loads while in
power-down mode.
The low power consumption in normal operation makes these
DACs ideally suited to portable battery-operated equipment. The
power consumption is 0.75 mW at 5 V and 0.36 mW at 3 V,
reducing to 1 μW in all power-down modes.
1
Protected by U.S. Patent No. 5684481, other patents pending.
POWER-DOWN
AD5301/AD5311/AD5321
LOGIC
PD*
BUFFER
AD5301/AD5311/AD5321
©1999–2007 Analog Devices, Inc. All rights reserved.
RESISTOR
NETWORK
2
C-compatible) serial interface that
1
are single 8-/10-/12-bit, buff-
V
OUT
www.analog.com

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ad5321brm-reel Summary of contents

Page 1

... DAC 8-/10-/12-BIT REGISTER DAC POWER-DOWN LOGIC GND Figure 1. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 AD5301/AD5311/AD5321 1 are single 8-/10-/12-bit, buff- 2 C-compatible) serial interface that BUFFER V OUT RESISTOR NETWORK PD* ©1999–2007 Analog Devices, Inc. All rights reserved. www.analog.com ...

Page 2

AD5301/AD5311/AD5321 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 AC Characteristics........................................................................ 5 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configurations ...

Page 3

SPECIFICATIONS kΩ to GND Table 1. 2 Parameter Min PERFORMANCE AD5301 Resolution Relative Accuracy Differential Nonlinearity AD5311 Resolution Relative Accuracy Differential Nonlinearity AD5321 Resolution ...

Page 4

AD5301/AD5311/AD5321 2 Parameter Min 5 LOGIC OUTPUT (SDA) Output Low Voltage Three-State Leakage Current Three-State Output Capacitance POWER REQUIREMENTS V 2 (Normal Mode 4 5 2.5 V ...

Page 5

AC CHARACTERISTICS kΩ to GND Table 2. 3 Parameter Output Voltage Settling Time AD5301 AD5311 AD5321 Slew Rate Major-Code Change Glitch Impulse Digital Feedthrough 1 See ...

Page 6

AD5301/AD5311/AD5321 ABSOLUTE MAXIMUM RATINGS 25°C, unless otherwise noted. A Table 4. Parameter V to GND DD SCL, SDA to GND PD, A1 GND V to GND OUT Operating Temperature Range Industrial (B Version) Storage Temperature ...

Page 7

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS V AD5301 AD5311 AD5321 3 A1 TOP VIEW V 4 (Not to Scale) OUT Figure 3. 8-Lead MSOP (RM-8) Pin Configuration Table 5. Pin Function Descriptions MSOP SOT-23 Pin No. Pin ...

Page 8

AD5301/AD5311/AD5321 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 actual endpoints of the DAC transfer function. Typical INL vs. code ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 1 25° 0.5 0 –0.5 –1 100 150 CODE Figure 5. AD5301 Typical INL Plot 25° –1 ...

Page 10

AD5301/AD5311/AD5321 1. 0.75 0.50 MAX INL MAX DNL 0.25 0 –0.25 MIN DNL –0.50 MIN INL –0.75 –1.00 – TEMPERATURE (°C) Figure 11. AD5301 INL Error and DNL Error vs. Temperature ...

Page 11

V (V) DD Figure 17. Power-Down Current vs. Supply Voltage 300 T = 25°C A 250 200 DECREASING 150 100 ...

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AD5301/AD5311/AD5321 T = 25° OUT CH1 CH2 CLK CH1 1V, CH2 5V, TIME BASE = 1µs/DIV Figure 21. Exiting Power-Down to Midscale 2.50 2.49 2.48 2.47 1µs/DIV Figure 22. Major-Code Transition 2.440 2.445 2.450 ...

Page 13

THEORY OF OPERATION The AD5301/AD5311/AD5321 are single resistor-string DACs fabricated on a CMOS process with resolutions of 8/10/12 bits, respectively. Data is written via a 2-wire serial interface. The devices operate from single supplies of 2 5.5 V ...

Page 14

AD5301/AD5311/AD5321 SERIAL INTERFACE 2-WIRE SERIAL BUS The AD5301/AD5311/AD5321 are controlled via an I compatible serial bus. The DACs are connected to this bus as slave devices (no clock is generated by the AD5301/AD5311/ AD5321 DACs). The AD5301/AD5311/AD5321 has a 7-bit ...

Page 15

WRITE OPERATION When writing to the AD5301/AD5311/AD5321 DACs, the user must begin with an address byte, after which the DAC acknowledges that it is prepared to receive data by pulling SCL SDA START ADDRESS BYTE COND BY ...

Page 16

AD5301/AD5311/AD5321 READ OPERATION When reading data back from the AD5301/AD5311/AD5321 DACs, the user must begin with an address byte after which the DAC acknowledges that it is prepared to transmit data by pulling SDA low. There are two different read ...

Page 17

POWER-DOWN MODES The AD5301/AD5311/AD5321 have very low power consump- tion, dissipating typically 0.36 mW with supply and 0.75 mW with supply. Power consumption can be further reduced when the DAC is not in use ...

Page 18

AD5301/AD5311/AD5321 APPLICATIONS NOTES USING REF19x AS A POWER SUPPLY Because the supply current required by the AD5301/AD5311/ AD5321 is extremely low, the user has an alternative option to employ a REF195 voltage reference (for reference (for ...

Page 19

POWER SUPPLY DECOUPLING In any circuit where accuracy is important, careful considera- tion of the power supply and ground return layout helps to ensure the rated performance. The AD5301/AD5311/AD5321 should be decoupled to GND with 10 μF in parallel with ...

Page 20

AD5301/AD5311/AD5321 OUTLINE DIMENSIONS INDICATOR 0.15 MAX 2.90 BSC 2.80 BSC 1.60 BSC PIN 1 0.95 BSC 1.90 1.30 BSC 1.15 0.90 1.45 MAX 0.22 0.08 0.50 SEATING 0.30 PLANE COMPLIANT TO JEDEC STANDARDS MO-178-AB ...

Page 21

... AD5311BRM-REEL AD5311BRM-REEL7 1 AD5311BRMZ 1 AD5311BRMZ-REEL 1 AD5311BRMZ-REEL7 AD5311BRT-500RL7 AD5311BRT-REEL AD5311BRT-REEL7 AD5311BRTZ-500RL7 1 1 AD5311BRTZ-REEL 1 AD5311BRTZ-REEL7 AD5321BRM AD5321BRM-REEL AD5321BRM-REEL7 1 AD5321BRMZ 1 AD5321BRMZ-REEL 1 AD5321BRMZ-REEL7 AD5321BRT-500RL7 AD5321BRT-REEL AD5321BRT-REEL7 1 AD5321BRTZ-500RL7 AD5321BRTZ-REEL 1 1 AD5321BRTZ-REEL7 RoHS Compliant Part; # denotes RoHS Compliant product, may be top or bottom marked. Temperature Range Package Description – ...

Page 22

AD5301/AD5311/AD5321 NOTES Rev Page ...

Page 23

NOTES AD5301/AD5311/AD5321 Rev Page ...

Page 24

... C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I 2 Rights to use these components system, provided that the system conforms to the I ©1999–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners Standard Specification as defined by Philips. ...

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